Dissertations / Theses on the topic 'Recording and reproducing'
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Martin, Bryan. "Two projects in sound recording involving underground rock music." Thesis, McGill University, 1989. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=61248.
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This thesis explores the sound recording aspects encountered on the creation of an album containing Rock music. It follows each project from the recording of the basic tracks through the final album mixes. Microphone technique, signal processing, studio setup, and instrument selection are also dealt with. This thesis documents two separate recording projects.
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Leonard, Theresa Ann. "Time delay compensation of distributed multiple microphones in recording : an experimental evaluation." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=61154.
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In the search for improved reproduction of a classical music performance, the technique of time delay compensation is shown to be a useful tool for balance in recording. This paper investigates the importance and validity of small time adjustments in recordings to compensate for variation in distance between spot microphones and a main stereo pair. Conventional recording techniques, psychoacoustic considerations and technological aspects of the use of delays are researched in order to determine their validity in timbral improvement.Multiple microphone set-ups are used to record both large orchestral works and smaller-scale classical compositions where auxiliary microphones may be needed to ensure an optimum balance in the final mix. Small time delays are derived from calculations involving the distances between microphones, the speed of sound, and humidity and temperature readings from the hall. Proper synchronization of these delays is desirable to preserve phase coherence and combat comb-filter effects. Precise delay units are used to compile musical exerpts for listening tests.
The results reveal any change in sound quality and provide a basis for investigating both the positive and negative effects through objective study of the value of time delay compensation in the live recording reproduction of classical music performances.
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Cook, Peter. "Toward a microphone technique for Dolby Surround encoding." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=60463.
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Dolby Surround technology offers consumers surround sound in their home via a 4:2:4 encode/decode matrix. Although originally intended for audio accompanying visual media, the system has potential as a music-only playback system.The purpose of the thesis is to investigate this potential, particularly as it applies to acoustic music recording. Dolby Surround encode and decode technology and its relevance to acoustic music reproduction is reviewed. The classic stereo microphone techniques are discussed with particular attention paid to each one's theoretical ability to "encode" information for the Dolby Surround decoder. Practical limitations and benefits of these well-known methods are considered.
Recently proposed microphone techniques are reviewed in theory and in practice and are found to provide many solutions. Methods for optimizing the decoder technology for music reproduction are suggested. The paper is relevant to any acoustic recording application for a number of surround systems as well as for conventional stereo and mono.
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Findlay, David A. "Three multi-track recording projects : an analysis of aesthetic and technical engineering considerations." Thesis, McGill University, 1987. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=63956.
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Rapley, Robert. "The transfer and restoration of old recordings /." Thesis, McGill University, 1993. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=69590.
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The process of remastering old recordings comprises two basic stages: the transfer of the material from the source to a modern format, and the subsequent restoration of the transferred material through various forms of signal processing. The transfer stage in particular requires an understanding of issues which are becoming increasingly less familiar to engineers as the science of recording progresses further into the digital era. To a lesser extent, the restoration stage involves the use of certain techniques and forms of processing which are specific to this application.This thesis is intended as a reference for those recording engineers who occasionally undertake remastering projects, but who are not thoroughly acquainted with the many different situations and problems which can be involved. Emphasis is given to those areas which are likely to be least familiar to most engineers.
In order to enable the engineer to properly assess a given source, the evolution and characteristics of each type of source--cylinder, disc and tape--is surveyed. This is followed in each case by an examination of the preparation, equipment and method used in transferring the source. Finally, the various types of processing which can be applied to the transferred material are presented, focusing on the techniques and forms of signal processing which are specific to audio restoration.
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Wendt, Christopher Lee. "Culture mediation and sound preservation : methodologies in ethnomusicology." Virtual Press, 2004. http://liblink.bsu.edu/uhtbin/catkey/1285584.
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This thesis explores how the study of culture can benefit from Western technology by reviewing anthropological theoretical and methodological processes and issues concerning reciprocity between the ethnographers and research subjects. In this case I am exploring the process of digitizing and dissemination of 400 hours of Kiowa song recordings. New digitizing equipment has made audio preservation and access relatively easy and affordable. These issues are most critical to groups like the Kiowa whose songs I have already started digitizing. In this thesis I closely examine existing collaborative theory and methodology in order to demonstrate the balance that can and should be maintained when using technology to preserve traditional music. In general, applying audio technology to an anthropological problem can enhance or inhibit the ethnographic process. My thesis focuses on how audio technology can contribute to this process without inhibiting, complicating, or distorting the way ethnomusicologists, folklorists, and anthropologists practice go about recording sound.Department of Anthropology
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Klepko, John. "5-channel microphone array with binaural-head for multichannel reproduction." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape9/PQDD_0016/NQ55349.pdf.
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Hans, Mathieu Claude. "Optimization of digital audio for Internet transmission." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/14894.
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Craig, Shelley. "Stereo audio for television : practical problems in audio post-production techniques." Thesis, McGill University, 1987. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=63957.
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Roux, Gerhard Wachtendonck. "Mikrofoontegnieke toegepas in populêre musiekopnames." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6734.
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Thesis (MPhil (Music))--University of Stellenbosch, 2011.ENGLISH ABSTRACT: This thesis investigates the role of natural or realistic audio recordings in popular music in the context of the different nature of popular music where the goal is not necessarily the recreation of the original acoustic space. Traditional microphone techniques are investigated from the perspective of the identifiable characteristics of popular music to establish the role of microphone techniques to obtain a desired outcome.
AFRIKAANSE OPSOMMING: Hierdie tesis ondersoek die rol van natuurlike of realistiese klankopnames in populêre musiek in die lig daarvan dat die aard van populêre opnames verskil van reproduksie wat poog om die opnameruimte akoesties te herskep. Tradisionele mikrofoontegnieke word bestudeer vanuit die hoek van die identifiseerbare eienskappe van populêre musiek om te bepaal watter rol mikrofoontegniek kan speel om ’n verlangde uitkoms te bewerkstellig.
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Pieters, Bronwyn Belinda. "Checklists in Audio Production." Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/96762.
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Thesis (MMUS)--Stellenbosch University, 2015ENGLISH ABSTRACT: This thesis investigates the role and implementation of the checklist in audio production studios. The goal of this study is to limit frequent human error by compiling and testing a checklist to be used in these studios. Procedures and checklists implemented in the life-critical elds of medicine and aviation have been studied and used as a framework, in order to shape this checklist to be relevant to a wide variety of audio production studios.
AFRIKAANSE OPSOMMING: Hierdie tesis ondersoek die rol en toepassings van die kontrolelys in klankateljees. Die doel van hierdie studie is om te ondersoek of die gebruik van kontrolelyste aangewend kan word om menslike foute te beperk, deur middel van die samestelling en toetsing van `n kontrolelys vir gebruik in hierdie ateljees. Werkswyses en kontrolelyste wat tans in die lewenskritiese sektore van lugvaart en die mediese wetenskappe benut word, is bestudeer en as raamwerk benut om te verseker dat hierdie kontrolelys toepaslik sal wees vir `n wye verskeidenheid klankproduksie-ateljees.
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Popović, Slobodan. "Reliability testing of R-DAT tapes subjected to mechanical and environmental stress." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=56757.
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This thesis is concerned with an examination of the reliability of R-DAT recording media in regard to professional and archival applications. Four brands of R-DAT tapes were subjected to mechanical stress, environmental stress, and a combination of both the mechanical and environmental stresses. Data generated from these tests were analyzed objectively, subjectively evaluated, and subsequently compared. Findings showed that in the majority of cases, the subjective evaluation results corroborate the objective measurements. The study concludes that only one brand of tape exhibited no deterioration of data, while the other three brands failed at various points throughout the testing.
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Capretta, Roberto. "The complexity of sound design and operations for television production." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=22537.
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The following thesis is an examination of audio engineering for television broadcast production. The extensive sound design, implementation, and production of television programming are to be examined from the perspective of four individual productions of diverse genres. A variety of skills necessary to produce each of the programs are discussed in detail.
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Ferguson, Robert W. III. "Automatic segmentation in concert recordings." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=81489.
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"...music is an art that exists in point of time." Aaron Copland, What to Listen for in MusicFew definitions are adequate to describe music, but a "point of time" is a concept with which people are familiar. When musicians give concerts they try to create these points in a context, which allows the audience to observe each moment by itself. Concert practice has developed to define the edges of musical points, guided by cues such as clapping, pauses, and concert program notes.
This masters thesis investigates how to analyze concert recordings of Western music and their program notes to produce segments which best fit the boundaries of musical points. Modern segmentation techniques are reviewed and a new method specific to concert recordings is examined.
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Genevro, Bradley James. "The Art of Recording the American Wind Band." Thesis, University of North Texas, 2006. https://digital.library.unt.edu/ark:/67531/metadc5276/.
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Wind bands have been recording for over one hundred years. Through advancements in both technology and process, recordings have made a monumental impact on the wind band and its repertoire. These advancements have created clarity regarding the performance practice of pieces and helped to preserve the wind band repertoire. Many early works have gained masterwork status due, in large part, to the fact that recordings have preserved them. The increase in popularity of recording and, in particular, the wind band, warrants an investigation into the various aspects of the process. Additionally, gaining insight from wind band professionals who record will help to evaluate the contributions that recording has made to the education of performers and listeners, the preservation of repertoire and the artistic enhancement of the wind band. Each chapter explores aspects of the recording process and how those aspects have shaped the wind band, its repertoire and performance practice. Information from conductors, composers and engineers provide valuable insight pertaining to the educational, historical and artistic components of the recording process. The goal of all involved in the recording process should be the pursuit of technical perfection, which does not eclipse the ultimate musical goals of the project and the integrity of the composer's intentions.
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Hatch, Wesley. "High-level audio morphing strategies." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=83108.
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This thesis presents high-level strategies for controlling existing audio morphing algorithms. Prominent methods for spectrally representing audio data in the context of audio morphing are surveyed, and techniques involving manipulating and interpolating additive models are explored. Additionally, a combination of past audio-morphing approaches (sinusoidal morphing techniques as well as techniques taken from an MFCC approach) are employed in order to facilitate any type of sonic input. The system presented herein is meant to accommodate a wide range of inputs, and will adjust the impact of a high-level feature depending on the type and quality of the input.**This dissertation is a compound document (contains both a paper copy and a CD as part of the dissertation).
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Markle, Blake L. "A comparative study of time-stretching algorithms for audio signals /." Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=31119.
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Algorithms exist which will perform independent transformations on frequency or duration of a digital audio signal. These processes have different results different types of audio signals. A comparative study of granular and phase vocoder algorithms, implementation, and their respective effects on audio signals was made to determine which algorithm is best suited to a particular type of audio signal.
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Kosek, Paul C. "Improved analysis of musical sounds using time-frequency distributions." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=83189.
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The objective of this research is to improve the analysis of musical sounds in comparison to traditional additive analysis, i.e. Fourier Analysis. Namely, the focus of this study is to improve the tracking of time-evolving partials. Traditional analysis methods assume constant amplitudes and frequencies over each successive frame in which a signal is analyzed. Tracking the time-evolution of these partials, however, can require the implementation of complex probabilistic techniques. This thesis presents an alternative method in which the Ambiguity Function, a distribution in both time and frequency, is used to create a clearer, more accurate representation that requires fewer complex methods to track partials. Through the use of a more accurate spectral representation and the inclusion of a chirp rate parameter, partials may be more readily followed based upon spectral parameters alone. This new method that is presented will build upon the traditional methods by first employing Fourier analysis to identify partials, and then utilizing the Analytic Signal and Ambiguity Function to improve individual spectral parameter estimations and partial tracking. The overall intent of this work is that through this method, one may create an improved spectral model that is more useful to musical analysis.
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Lapp-Szymanski, Jean-Paul. "Technology inna rub-a-dub style : technology and dub in the Jamaican sound system and recording studio." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=98547.
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This thesis attempts to chart the development of a Jamaican musical form known as dub. This development is considered primarily in terms of the island's encounter with a series of new playback, amplification, recording, and sound treatment technologies. Section I focuses on the formation of the Jamaican sound system (a network of powerful mobile discos) and its pivotal role in the birth of a fertile domestic record industry. Section II extends the investigation to the Jamaican recording studio and record industry. What distinguishes this work from others on Jamaican dub is its emphasis on technology, and theories of technology, within a geo-political framework. In Section I, this emphasis is most notably informed by the work of Harold Innis, Karl Marx and Lewis Mumford, with Marshall McLuhan and Walter Benjamin becoming more prominent in Section II. Key technologies in this analysis include mechanization (mechanical reproducibility), the Williamson amplification circuit, the House of Joy speaker, the dub plate (acetate phonograph) and vinyl record, twin-turntables and the microphone, the magnetic tape recorder, and perhaps most importantly, the multi-track recorder and interface (the multi-track mixing-board).
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Wu, Tsan-Ming. "Statistical impulse reponse modeling and dereverberation for room acoustics." Diss., Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/14932.
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Foss, Richard John. "A networking approach to sharing music studio resources." Thesis, Rhodes University, 1996. http://hdl.handle.net/10962/d1006660.
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This thesis investigates the extent to which networking technology can be used to provide remote workstation access to a pool of shared music studio resources. A pilot system is described in which MIDI messages, studio control data, and audio signals flow between the workstations and a studio server. A booking and timing facility avoids contention and allows for accurate reports of studio usage. The operation of the system has been evaluated in terms of its ability to satislY three fundamental goals, namely the remote, shared and centralized access to studio resources. Three essential network configurations have been identified, incorporating a mix of star and bus topologies, and their relative potential for satisfYing the fundamental goals has been highlighted.
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Ballora, Mark. "Data analysis through auditory display : applications in heart rate variability." Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=35463.
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This thesis draws from music technology to create novel sonifications of heart rate information that may be of clinical utility to physicians. Current visually-based methods of analysis involve filtering the data, so that by definition some aspects are illuminated at the expense of others, which are decimated. However, earlier research has demonstrated the suitability of the auditory system for following multiple streams of information. With this in mind, sonification may offer a means to display a potentially unlimited number of signal processing operations simultaneously, allowing correlations among various analytical techniques to be observed. This study proposes a flexible listening environment in which a cardiologist or researcher may adjust the rate of playback and relative levels of several parallel sonifications that represent different processing operations. Each sonification "track" is meant to remain perceptually segregated so that the listener may create an optimal audio mix. A distinction is made between parameters that are suited for illustrating information and parameters that carry less perceptual weight, which are employed as stream separators. The proposed sonification model is assessed with a perception test in which participants are asked to identify four different cardiological conditions by auditory and visual displays. The results show a higher degree of accuracy in the identification of obstructive sleep apnea by the auditory displays than by visual displays. The sonification model is then fine-tuned to reflect unambiguously the oscillatory characteristics of sleep apnea that may not be evident from a visual representation. Since the identification of sleep apnea through the heart rate is a current priority in cardiology, it is thus feasible that sonification could become a valuable component in apnea diagnosis.
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Sinyor, Elliot. "Digital musical instruments : a design approach based on moving mechanical systems." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=99606.
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This thesis describes the design and use of two novel digital musical instruments (DMIs) based on moving mechanical systems. The motivation behind using mechanical devices was threefold: to explore the effect of physical effort on DMIs, to make use of the device's inherent haptic and visual feedback, and to serve as a starting point for sound mappings. It was hoped that their mechanical nature would give the instruments a character that could emerge through each of the mappings. The first DMI built was the Gyrotyre, a hand-held DMI based around a small bicycle wheel outfitted with sensors that measure its speed of rotation and as well as its angle of orientation. The second DMI built was the Springwave, which consists of a loose metal spring stretched to one meter and fixed at both ends to a metal frame. The frame is in turn mounted horizontally on a hi-hat stand so that it can be raised and lowered with the pedal, thus inducing oscillation in the spring. Various mappings were designed to reflect and make use of the physical nature of both instruments. It was found that the nature of interaction with each instrument was very different depending on the mapping used. The use of mechanical devices was found to be a useful starting point for the development of mappings, and made playing the instruments engaging for the performer by the relationship between DMIs and musical contexts, a framework for characterizing DMIs that takes musical context into account is presented.
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Van, der Westhuizen Ewald. "Nie-destruktiewe klankonttrekking, restourasie en spraakverheffing van Edison-fonograafsilinders." Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/49772.
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Thesis (MScEng)--University of Stellenbosch, 2003.ENGLISH ABSTRACT: Two non-destructive methods of extracting audio from Edison phonographic cylinders were investigated. A recording device with high accuracy positioning was designed and manufactured. A microscopic image method was investigated first. Surface images of the cylinder were obtained using a webcamera. An audio signal was then extracted from the width modulation. Results were not pleasing as echoes caused by intergroove modulation were perceptable. The audio also lacked resolution. The true modulation of the audio is not embedded in the width, but in the depth of the groove. The second audio extraction method involved using a laser pick-up from a compact disc player to measure the depth of the groove. Three laser recording methods were investigated. The first was forward recording, that measured the depth modulation in the recording direction of the groove. The second method, backward recording, was identical to forward recording with the mechanical system moving in reverse. Four recordings from different positions in the groove were combined to create an audio signal. This combination of recordings showed a substantial improvement in the signal-to-noise ratio. A third recording method, transverse recording, that measured the whole depth profile of the groove was also investigated. The groove profile was then processed to an audio signal. A manual audio restoration program was written to replace visible sections of distorted data with better interpolations. Two speech enhancement methods were investigated, the first being the most commonly used speech enhancement method for digital audio restoration, Short-Time Spectral Attenuation (STSA). The second method is based on linear predictive coefficient (LPC) estimation of short-time frames. The two methods were evaluated by means of listening tests. The LPC enhancement method was preferred because it enhanced the intelligibility of the speech.
AFRIKAANSE OPSOMMING: Twee nie-destruktiewe metodes om klank van Edison-fonograafsilinders te onttrek, is ondersoek. 'n Opneemtoestel, wat die silinders met baie hoë akkuraatheid posisioneer, IS ontwerp en vervaardig. 'n Mikroskopiese beeldrnetode IS as eerste klankonttrekkingsmetode ondersoek. Mikroskopiese beelde is met 'n webkamera van die silinderoppervlak geneem. Klank is vanuit die wydtemodulasie sigbaar in die beelde onttrek. Resultate was nie bevredigend nie weens groefintermodulasie-eggo's en 'n tekort aan resolusie. Die ware modulasie van die klank is nie in die wydte van die groefie gegraveer nie, maar in die diepte. Die tweede klankonttrekkingsmetode gebruik 'n aangepaste lasersensor van 'n CD-speler om die dieptemodulasie van die groefie te meet. Drie laseropneemmetodes is ondersoek. Die eerste is voorwaartse opname, wat die dieptemodulasie in die opneemrigting van die groefie meet. 'n Tweede opneemmetode, truwaartse opname, is identies aan voorwaartse opname, behalwe dat die meganiese stelsel in trurat beweeg. Vier opnames vanuit verskillende posisies in die groefbreedte is gekombineer om 'n klanksein te vorm. Die kombinasie van vier opnames toon 'n beduidende verbetering op die sein-tot-ruis-verhouding. Dit het aanleiding gegee tot die derde opneemmetode, dwarsskandering, wat die hele profiel van die groef meet. Die groefprofiel word dan verwerk tot 'n klanksein. 'n Handoudiorestourasieprogram is geskryf om sigbare verwringing in die klanksein met beter interpolasies te vervang. Twee spraakverheffingsmetodes is ondersoek. Short- Time Spectral Attenuation (STSA) is die mees gebruikte metode vir oudiorestourasie. 'n Tweede spraakverheffingsmetode wat van 'n lineêre voorspellingskoëffisiëntafskatting (LPC-afskatting) van korttydraampies gebruik maak, is ook toegepas. Die twee metodes is deur luistertoetse teen mekaar opgeweeg. Die LPCmetode is verkies aangesien dit die verstaanbaarheid van die spraak beter behoue laat bly.
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Du, Preez Liska. "Effects of selected modes of digital distribution on music consumerism, with reference to the album format." Thesis, Nelson Mandela Metropolitan University, 2011. http://hdl.handle.net/10948/1427.
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In this digital age many listeners of music now purchase albums from online digital music stores instead of buying a physical album from the record store. This has created a concern with many regarding the future of the album as a physical medium. This study investigates the impact of the possible death of the album on certain listening habits, the activity of record collecting, the creation of large-scale musical works, music consumerism, and its implications for the creative process on music as art and sound-recording quality. Three realisations have led to the problem statement. Firstly, the album might not have a future in the digital age. Secondly, downloadable songs might not be able to recreate an album experience. The third realisation is that the possible death of the album could create new, exciting challenges to artists as they strive to create art. This study is exploratory in nature - and no hypothesis was generated. The research necessitates qualitative, exploratory, descriptive and contextual approaches. Furthermore, the investigation has led to the collection of mostly new data, constituting a “primary data design” through the implementation of qualitative listening experiments and a focus group, using full-time NMMU students between 18 and 25 years of age. It is herein argued that digital distribution might possibly have an effect on the perception of the album format and might possibly still be a relevant listening experience, valued by young people. Singles and albums are collectable; and good albums are considered artistic and comparable to the large-scale musical works of the past. If the concept of an album does not die out, then high fidelity formats should be able to re-invent the album experience. Listening experiences other than the album experience do exist, and they could generate new ways for artists to create musical art.
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Curran, Terence William. "Recording classical music in Britain : the long 1950s." Thesis, University of Oxford, 2015. https://ora.ox.ac.uk/objects/uuid:2340cf56-c2be-4c0b-b5a6-2cfe06c22fe4.
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During the 1950s the experience of recording was transformed by a series of technical innovations including tape recording, editing, the LP record, and stereo sound. Within a decade recording had evolved into an art form in which multiple takes and editing were essential components in the creation of an illusory ideal performance. The British recording industry was at the forefront of development, and the rapid growth in recording activity throughout the 1950s as companies built catalogues of LP records, at first in mono but later in stereo, had a profound impact on the music profession in Britain. Despite this, there are few documented accounts of working practices, or of the experiences of those involved in recording at this time, and the subject has received sparse coverage in academic publications. This thesis studies the development of the recording of classical music in Britain in the long 1950s, the core period under discussion being 1948 to 1964. It begins by considering the current literature on recording, the cultural history of the period in relation to classical music, and the development of recording in the 1950s. Oral history informs the central part of the thesis, based on the analysis of 89 interviews with musicians, producers, engineers and others involved in recording during the 1950s and 1960s. The thesis concludes with five case studies, four of significant recordings - Tristan und Isolde (1952), Peter Grimes (1958), Elektra (1966-67), and Scheherazade (1964) - and one of a television programme, The Anatomy of a Record (1975), examining aspects of the recording process. The thesis reveals the ways in which musicians, producers, and engineers responded to the challenges and opportunities created by advances in technology, changing attitudes towards the aesthetics of performance on record, and the evolving nature of practices and relationships in the studio. It also highlights the wider impact of recording on musical practice and its central role in helping to raise standards of musical performance, develop audiences for classical music, and expand the repertoire in concert and on record.
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Seitz, Jeffrey L. "An interactive CD-ROM to teach harmonic and intermodulation distortion." Virtual Press, 1997. http://liblink.bsu.edu/uhtbin/catkey/1048367.
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This study had two purposes: first, to collect information relating to harmonic and intermodulation distortion from several sources into one comprehensive report and second, to describe and develop an interactive CD-ROM as a new method of learning harmonic and intermodulation distortion. The CD-ROM allows students to interact and control the percentage amount of harmonic and intermodulation distortion in order to "calibrate" their ears. In addition, the practical testing environment changes on a random basis to continually challenge the users. These situations allow students to interact at their own speed and therefore customize their learning development.School of Music
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Klinkradt, Bradley Hugh. "An investigation into the application of the IEEE 1394 high performance serial bus to sound installation contro." Thesis, Rhodes University, 2003. http://hdl.handle.net/10962/d1004899.
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This thesis investigates the feasibility of using existing IP-based control and monitoring protocols within professional audio installations utilising IEEE 1394 technology. Current control and monitoring technologies are examined, and the characteristics common to all are extracted and compiled into an object model. This model forms the foundation for a set of evaluation criteria against which current and future control and monitoring protocols may be measured. Protocols considered include AV/C, MIDI, QSC-24, and those utilised within the UPnP architecture. As QSC-24 and the UPnP architecture are IP-based, the facilities required to transport IP datagrams over the IEEE 1394 bus are investigated and implemented. Example QSC-24 and UPnP architecture implementations are described, which permit the control and monitoring of audio devices over the IEEE 1394 network using these IP-based technologies. The way forward for the control and monitoring of professional audio devices within installations is considered, and recommendations are provided.KMBT_363
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Tindale, Adam. "Classification of snare drum sounds using neural networks." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=81515.
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The development of computer algorithms for music instrument identification and parameter extraction in digital audio signals is an active research field. A musician can listen to music and instantly identify different instruments and the timbres produced by various playing techniques. Creating software to allow computers to do the same is much more challenging. This thesis will use digital signal processing and machine learning techniques to differentiate snare drum timbres produced by different stroke positions and stroke techniques.
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Meijer, Helmut. "Research into and design of a digital sound sample library for acoustic drums." Thesis, Stellenbosch : University of Stellenbosch, 2004. http://hdl.handle.net/10019.1/16388.
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Thesis (M.Phil.)--University of Stellenbosch, 2004.ENGLISH ABSTRACT: Sound sample libraries represent the format in which huge collections of sampled sounds are made available for use within digital samplers and/or other digital audio workstations (DAW’s). Although in use for many years, little or no academic research has been done on the methodology of compiling a commercial sound sample library. In this endeavour, the factors influencing the design, recording and publishing of a sound sample library are investigated through the actual design of a drum sample library. The rationale behind the sampling of a drum kit is carefully depicted in the light of various other factors influencing the instrument, as well as being influenced by the instrument itself. A professional drummer was engaged to play a state-of-the art Gretsch acoustic drum kit. Samples of the kit, consisting of various individual instrument parts, were recorded in three locations within the Konservatorium of Stellenbosch University, for reasons carefully explained in the text. These numerous drum hits were mixed and cut into individual drum samples. The samples were mapped into a digital software sampler, GigaStudio, creating five distinct collections of drum samples that faithfully represent the quality of the drum kit, the recording rooms as well as the equipment used in the process. The outcome of the study is a professional product in the form of a Gretsch drum sample collection, prepared for commercial release. Many of the drum samples have already been used successfully in commercial music releases over the past 12 months. Whilst the drum sample library is currently being published, the product and documentation clearly depict the viability of the study in terms of the artistic and academic expectations that have been met. The study anticipates future research on the subject.
AFRIKAANSE OPSOMMING: Klankbiblioteke heet die formaat waarin versamelings van klankmonsters beskikbaar gestel word vir gebruik in digitale samplers1 en/of ander digitale klankprogrammatuur. Nieteenstaande die feit dat klankbiblioteke reeds jare in gebruik is, is geen studie waarin die ontwerp en saamstel van so ‘n biblioteek beskryf word, bekend nie. In hierdie navorsingsprojek word die faktore wat die ontwerp, opneem en vrystelling van ‘n klankbiblioteek beïnvloed bestudeer deur die skep van so ‘n biblioteek. Die oorwegings vir die keuse van ‘n tromstel is noukeurig uiteengesit in die lig van die faktore wat betrekking het tot, en wederkerig beïnvloed is deur die instrument en opname-omgewing. ‘n Professionele tromspeler is vir die projekdoeleindes gekontrakteer om ‘n Gretsch akoestiese tromstel te speel. Klankmonsters van die tromstel se individuele komponente is in drie lokale binne die Konservatorium van die Universiteit van Stellenbosch opgeneem, met redes soos uiteengestip in die teks. Klankopnames van die talle tromslae is gemeng en opgesny in individuele klankmonsters. Laasgenoemde is in GigaStudio, ‘n digitale sagteware sampler, gekarteer sodat vyf duidelik-onderskeibare klankveramelings geskep is. Hierdie versamelings lig die kwaliteit van die tromstel asook die verskeie opnamelokale en toerusting wat gebruik is duidelik uit. Die resultaat van die studie is ‘n professionele produk in die vorm van ‘n Gretsch kommersiële klankbiblioteek, waarvan verskeie klankmonsters reeds oor die afgelope 12 maande in plaaslike musiekvrystellings gebruik is. Hoewel die klankbiblioteek huidiglik vrygestel word, toon die produk en dokumentasie duidelik die artistiese en tegniese waardigheid van die studie. Die studie antisipeer toekomstige navorsings-moontlikhede wat uit die onderwerp mag voortspruit.
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Verster, Charl Pierre Franscois. "Investigation of a Sweep Technique for Microphone Placement." Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/96703.
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Laubscher, Robert Alan. "An investigation into the use of IEEE 1394 for audio and control data distribution in music studio environments." Thesis, Rhodes University, 1999. http://hdl.handle.net/10962/d1006483.
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This thesis investigates the feasibility of using a new digital interconnection technology, the IEEE-1394 High Performance Serial Bus, for audio and control data distribution in local and remote music recording studio environments. Current methods for connecting studio devices are described, and the need for a new digital interconnection technology explained. It is shown how this new interconnection technology and developing protocol standards make provision for multi-channel audio and control data distribution, routing, copyright protection, and device synchronisation. Feasibility is demonstrated by the implementation of a custom hardware and software solution. Remote music studio connectivity is considered, and the emerging standards and technologies for connecting future music studio utilising this new technology are discussed.Microsoft Word
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Okai-Tettey, Harold A. "High speed end-to-end connection management in a bridged IEEE 1394 network of professional audio devices." Thesis, Rhodes University, 2006. http://hdl.handle.net/10962/d1006638.
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A number of companies have developed a variety of network approaches to the transfer of audio and MIDI data. By doing this, they have addressed the configuration complications that were present when using direct patching for analogue audio, digital audio, word clock, and control connections. Along with their approaches, controlling software, usually running on a PC, is used to set up and manage audio routings from the outputs to the inputs of devices. However one of the advantages of direct patching is the conceptual simplicity it provides for a user in connecting plugs of devices, the ability to connect from the host plug of one device to the host plug of another. The connection management or routing applications of the current audio networks do not allow for such a capability, and instead employ what is referred to as a two-step approach to connection management. This two-step approach requires that devices be first configured at the transport layer of the network for input and output routings, after which the transmit and receive plugs of devices are manually configured to transmit or receive data. From a user’s point of view, it is desirable for the connection management or audio routing applications of the current audio networks to be able to establish routings directly between the host plugs of devices, and not the audio channels exposed by a network’s transport, as is currently the case. The main goal of this work has been to retain the conceptual simplicity of point-to-point connection management within digital audio networks, while gaining all the benefits that digital audio networking can offer.
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Human, J. F. "Effektiewe klankopnames vir enkelkamera-televisieverslaggewing." Thesis, Stellenbosch : Stellenbosch University, 2000. http://hdl.handle.net/10019.1/49676.
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Thesis (MPhil) -- University of Stellenbosch, 2000.ENGLISH ABSTRACT: The most neglected element in television reporting is the sound track. The problem is illustrated by the fact that there are currently no specialised textbooks, or training courses, on sound recording for television reporting, anywhere in the world. Textbooks that deal with television reporting dedicate very little space to sound recordings. With the growing competition in television news, news teams are increasingly becoming smaller. It is common practice these days to have a news team consisting of only a cameraperson and a reporter. The cameraperson is also responsible for the sound. Two television stations, namely NYl in New York and Channel One Television in England, have already dispensed with the cameraperson and send out only a reporter. This dissertation addresses the above-mentioned problem by doing research on the sound equipment, recording techniques and production techniques that are useful for effective sound recordings during single camera television reporting. Chapter two explains the functions of the different departments in a television station, as well as the duties of the staff. Chapter three explains basic television principles, terminology and equipment that the sound person uses daily and needs to understand to perform his work optimally. Chapterfour gives the basic terms that are needed to follow a conversation on sound recording. Terms like decibel, stereo and digital sound are explained. The chapter also covers basic electricity and sound equipment. Chapter five covers microphones under three headings, namely: electrical characteristics, acoustic characteristics and microphone design. The chapter also covers associated equipment, explains the sound facilities on video cameras and gives a list of possible sound equipment that can be used during a production. Chapter six covers sound recordings, principles and techniques under the following headings: • Perspective and boom swinging, which deals with sound perspective and boom swinging. • Rigging of cables, which gives practical tips for laying cables inside and outside buildings. • Recording principles, which gives practical tips on sound recordings. • Interviews, which includes recording tips for television interviews and reporting. • Reporting, which covers reporting, media conferences and public events. • Commentary recordings, which deals with the preparation and recording of voice over. • Music recordings, which deals with instruments and bands, and suggests microphone positions. • Telephone lines, which covers the use of telephone lines for reporting. • Location reconnaissance, which gives practical tips on pre-production planning. • Guidelines for sound persons during productions, which concludes the chapter and the dissertation with practical tips on behaviour during local, foreign and/or dangerous productions.
AFRIKAANSE OPSOMMING: Die veranderlike wat die meeste afgeskeep word in televisieverslaggewing, is die klankbaan. Die probleem word onderstreep deur die feit dat daar wêreldwyd tans geen gespesialiseerde handboeke of opleidingskursusse bestaan wat oor klankopnames vir televisieverslaggewing handel nie. Handboeke wat handeloor televisieverslaggewing wy ook baie min ruimte aan klankopnames. Met die groeiende kompetisie in televisienuus raak nuusspanne toenemend kleiner. Dit is reeds algemene praktyk dat die nuusspan slegs uit 'n kamerapersoon en 'n verslaggewer bestaan. Die kamerapersoon moet dus ook die klankopnames doen. Twee televisiestasies, naamlik NYl in New York en Channel One Television in Engeland, het reeds die kamerapersoon uitgeskakel en stuur slegs 'n verslaggewer uit. Hierdie verhandeling spreek bogenoemde probleem aan deur navorsing te doen oor die klanktoerusting, opnametegnieke en produksietegnieke wat nuttig is vir effektiewe klankopnames tydens enkelkameratelevisieverslaggewing. Hoofstuk twee verduidelik die funksies van die verskillende departemente in 'n televisiestasie sowel as die pligte van die personeel. Hoofstuk drie verduidelik basiese televisiebeginsels, -terminologie en -toerusting wat die klankpersoon daagliks mee werk en dus moet verstaan om sy werk optimaal te verrig. Hoofstuk vier gee die basiese terme wat nodig is om 'n gesprek oor klankopnames te volg. Begrippe soos desibel, stereo en digitale klank word verduidelik. Die hoofstuk behandelook basiese elektriese beginsels en klanktoerusting. Hoofstuk vyf bespreek mikrofone onder drie indelings naamlik: elektriese eienskappe, akoestiese eienskappe en mikrofoonontwerp. Die hoofstuk dek ook aanverwante toerusting, verduidelik die klankfasiliteite op videokameras en gee 'n lys van klanktoerusting wat tydens produksies gebruik kan word. Hoofstuk ses is die belangrikste en bespreek klankopnames, beginsels en tegnieke onder die volgende opskrifte: • Perspektief en boomhantering, waaronder klankperspektief en boomhantering behandel word. • Lê van kabels, wat praktiese wenke gee vir die lê van kabels binne en buite geboue. • Opnamebeginsels, wat praktiese wenke gee in verband met klankopnames. • Onderhoude, wat opnamewenke gee in verband met televisieonderhoude en verslaggewing. • Verslaggewing, wat verslaggewing, nuuskonferensies en openbare geleenthede dek. • Kommentaaropnames, wat handeloor die voorbereiding vir, en opneem van kommentaar. • Musiekopnames, wat musiekinstrumente en orkeste bespreek en mikrofoonposisies voorstel. • Telefoonlyne, waaronder die gebruik van telefoonlyne vir verslaggewing bespreek word. • Terreinverkenning, wat praktiese riglyne gee vir voorproduksie-ondersoeke. • Riglyne vir klankpersone tydens produksies, wat die hoofstuk en die studie afsluit met praktiese wenke vir gedrag tydens plaaslike, buitelandse en/of gevaarlike produksies.
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Sankarasubramaniam, Yogesh. "New Capacity-Approaching Codes for Run-Length-Limited Channels." Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/10483.
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Run-Length-Limited (RLL) channels are found in digital recording systems like the Hard Disk Drive (HDD), Compact Disc (CD), and Digital Versatile Disc (DVD). This thesis presents novel encoding algorithms for RLL channels based on a simple technique called bit stuffing. First, two new capacity-achieving variable-rate code constructions are proposed for (d,k) constraints. The variable-rate encoding ideas are then extended to (0,G/I) and other RLL constraints. Since variable-rate codes are of limited practical value, the second half of this thesis focuses on fixed-rate codes. The fixed-rate bit stuff (FRB) algorithm is proposed for the design of simple, high-rate (0,k) codes. The key to achieving high encoding rates with the FRB algorithm lies in a novel, iterative pre-processing of the fixed-length input sequence prior to bit stuffing. Detailed rate analysis for the proposed FRB algorithm is presented, and upper and lower bounds on the asymptotic (in input block length) encoding rate are derived. Several system-level issues of the proposed FRB codes are addressed, and FRB code parameters required to design rate 100/101 and rate 200/201 (0,k) codes are tabulated. Finally, the proposed fixed-rate encoding is extended to (0,G/I) constraints.
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Morris, Jeffrey Martin. "Live Sampling in Improvised Musical Performance: Three Approaches and a Discussion of Aesthetics." Thesis, connect to online resource, 2007. http://digital.library.unt.edu/permalink/meta-dc-3936.
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Thibault, François. "High-level control of singing voice timbre transformations." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=81514.
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The sustained increase in computing performance over the last decades has brought enough computing power to perform significant audio processing in affordable personal computers. Following this revolution, we have witnessed a series of improvements in sound transformation techniques and the introduction of numerous digital audio effects to modify effectively the time, pitch, and loudness dimensions of audio signals. Due to the complex and multi-dimensional nature of timbre however, it is significantly more difficult to achieve meaningful and convincing qualitative transformations. The tools currently available for timbre modifications (e.g. equalizers) do not operate along perceptually meaningful axes of singing voice timbre (e.g. breathiness, roughness, etc.) resulting in a transformation control problem. One of the goals of this work is to examine more intuitive procedures to achieve high-fidelity qualitative transformations explicitly controlling certain dimensions of singing voice timbre. Quantitative measurements (i.e. voice timbre descriptors) are introduced and used as high-level controls in an adaptive processing system dependent on the characteristics observed in the input signal.The transformation methods use a harmonic plus noise representation from which voice timbre descriptors are derived. This higher-level representation, closer to our perception of voice timbre, offers more intuitive controls over timbre transformations. The topics of parametric voice modeling and timbre descriptor computation are first introduced, followed by a study of the acoustical impacts of voice breathiness variations. A timbre transformation system operating specifically on the singing voice quality is then introduced with accompanying software implementations, including an example digital audio effect for the control and modification of the breathiness quality on normal voices.
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Fuchs, Adriaan. "In search of the "true" sound of an artist : a study of recordings by Maria Callas." Thesis, Stellenbosch : University of Stellenbosch, 2006. http://hdl.handle.net/10019.1/17355.
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Thesis (M. Phil. (Music Technology)) -- University of Stellenbosch, 2006.ENGLISH ABSTRACT: Modern digital signal processing, allowing a much greater degree of flexibility in audio processing and therefore greater potential for noise removal, pitch correction, filtering and editing, has allowed transfer and audio restoration engineers a diversity of ways in which to “improve” or “reinterpret” (in some cases even drastically altering) the original sound of recordings. This has lead to contrasting views regarding the role of the remastering engineer, the nature and purpose of audio restoration and the ethical implications of the restoration process. The influence of audio restoration on the recorded legacy of a performing artist is clearly illustrated in the case of Maria Callas (1923 - 1977), widely regarded not only as one of the most influential and prolific of opera singers, but also one of the greatest classical musicians of all time. EMI, for whom Callas recorded almost exclusively from 1953 - 1969, has reissued her recordings repeatedly, continually adapting their sound “to the perceived preferences of the record-buying public” (Seletsky 2000: 240). Their attempts at improving the sound of Callas’s recordings to meet with the sonic quality expected of modern recordings, as reissued in the latest releases that form part of EMI’s Callas Edition, Great Recordings of the Century (GROTC) and Historical Series, have resulted in often staggeringly different reinterpretations of the same audio material that bear no resemblance to previous CD or LP incarnations or “evince no consolidated conviction about exactly how Callas’s voice should sound.” In essence, some commentators argue that the “Callas sound” we hear on recent CD releases is not necessarily exactly as the great diva might have sounded. The purpose of this study is to consider the influence of audio restoration and remastering techniques on the recorded legacy of Callas, by illustrating the sometimes startlingly different ways in which her voice has been made to sound, examining and comparing the way in which different remasterings of the same audio material can vary in quality, as well as demonstrating how vastly different sonic reinterpretations of a single recording can affect our perception of an artist’s “true” sound. To this end, various reissues of six different complete opera recordings, including four studio recordings: Tosca (1953), Lucia di Lammermoor (1953), Norma (1954), Madama Butterfly (1955), as well as two “live” performances of Macbeth (1953) and La Traviata (1958), have been evaluated and compared, using the “true” sound of Callas’s voice as reference in comparing the different remasterings. Pitch and frequency spectrum analysis was used to confirm or support any subjective claims and observations and further analysis performed with the aid of a specialised Matlab algorithm.
AFRIKAANSE OPSOMMING: Moderne digitale seinprossesering bied kragtige en veelsydige moontlikhede vir die verwerking van klankseine. Die groter potensiaal vir ruisverwydering, toonhoogte verstelling, filtrering en redigering van opnames bied klankingenieurs ‘n wye verskeidenheid van maniere om die oorspronklike klank van opnames te verbeter, te interpreteer en soms ingrypend te verander. Dit het aanleiding gegee tot teenstrydige en uiteenlopende menings oor die funksie van die klankrestourasie-ingenieur, die aard en doel van klankrestourasie en die etiese gevolge van die restourasieproses. Die invloed van klankrestourasie op die klanknalatenskap van ‘n uitvoerende kunstenaar kan duidelik bestudeer word in die geval van Maria Callas (1923 – 1977), algemeen aanvaar as een van die mees invloedryke en grootse klassieke musici van alle tye. Die platemaatskappy EMI, vir wie Callas feitlik uitsluitlik vanaf 1953 tot 1969 opgeneem het, het haar klankopnames reeds verskeie kere heruitgereik en die klank daarvan deurlopend aangepas om aanklank te vind by die “veronderstelde voorkeure van die publiek” (Seletsky 2000: 240). EMI se pogings om die klank van Callas se opnames te verbeter om aan die klankvereistes van moderne opnames te voldoen, het ontaard in dikwels aangrypend verskillende interpretasies van dieselfde audio materiaal wat geen ooreenkomste toon met vorige laserskyf of langspeelplaat uitgawes nie, asook “geen vasgestelde oortuigings openbaar oor hoe Callas se stem presies moet klink nie.” Sommige critici argumenteer dat die “Callas klank” wat ons op hedendaagse CD uitgawes hoor, nie noodwendig klink soos wat Callas werklik geklink het nie. Die doel van hierdie studie is om die invloed van klankrestourasie op die klanknalatenskap van Callas te bestudeer deur die verskillende wyses waarop die klank van haar stem aangepas is te illustreer, die verskille in klankkwaliteit tussen verskillende uitgawes van dieselfde materiaal te ondersoek en te vergelyk, asook te demonstreer hoe uiteenlopend verskillende interpretasies van ‘n enkele opname die persepsie van ‘n kunstenaar se “ware” klank kan affekteer. Vir hierdie doel is verkeie uitgawes van ses verskillende volledige opera opnames, insluitend vier studio opnames van onderskeidelik Tosca (1953), Lucia di Lammermoor (1953), Norma (1954) en Madama Butterfly (1955), asook twee “lewendige” opnames van Macbeth (1952) en La Traviata (1958) bestudeer deur Callas se “ware” klank as maatstaf te gebruik om die onderskeie opnames te vergelyk. Toonhoogte- en frekwensie spektrum analise, asook analise deur middel van ‘n gespesialiseerde Matlab algoritme, is deurlopend gebruik om enige subjektiewe gevolgtrekkings en waarnemings te staaf.
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Nozaic, Claire. "An introduction to audio post-production for film." Thesis, Stellenbosch : Stellenbosch University, 2006. http://hdl.handle.net/10019.1/17405.
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Thesis (M.Mus.)--University of Stellenbosch, 2006.ENGLISH ABSTRACT: In South Africa there has been an increase over the last few years in audio engineering courses which include modules of study in audio post-production or even offer audio post-production as a major focus of study. From an academic standpoint however, and despite the growth in the local film industry, very little study of this field has been undertaken in South Africa until recently. In 2005, a MMus thesis was submitted at the University of KwaZulu-Natal entitled Acoustic Ambience in Cinematography: An Exploration of the Descriptive and Emotional Impact of the Aural Environment (Turner, 2005: online). The thesis briefly outlines the basic components of the soundtrack and focuses on describing and analysing the properties of ambience, a sub-section of sound effects. At Stellenbosch University, research has recently begun in the fields of film music and Foley (sound effects associated with human movement onscreen). The purpose of this thesis is to provide an overview of audio post-production and the contribution of sound to the film medium. It provides an outline of the processes involved in creating a soundtrack for film and includes a description of the components of the soundtrack and recommendations for practical application.
AFRIKAANSE OPSOMMING: Gedurende die afgelope paar jaar was daar ‘n toename in oudio-ingenieurskursusse, insluitend studiemodules in oudio post-produksie, en selfs ‘n aanbod vir modules in post-produksie as hoofstudierigting. Desnieteenstaande, en ten spyte van die groei in die plaaslike filmindustrie is tot onlangs min akademiese studies op dié terrein in Suid-Afrika onderneem. In 2005 is ‘n MMus-tesis aan die Universiteit van KwaZulu-Natal voorgelê, met die titel Acoustic Ambience in Cinematography: An Exploration of the Descriptive and Emotional Impact of the Aural Environment (Turner, 2005: aanlyn). Hierdie tesis gee ‘n basiese oorsig oor die basiese komponente van die klankbaan, en fokus op die beskrywing en analise van die eienskappe van ambience – ‘n onderafdeling van klankeffekte. By die Universiteit van Stellenbosch is onlangs ‘n begin gemaak met navorsing oor die terreine van filmmusiek en Foley, d.w.s. klankeffekte geassosieer met menslike bewegings op die skerm.. Hierdie tesis beoog om ‘n oorsig te gee van oudio post-produksie en die bydrae van klank tot die filmmedium. Dit verskaf ‘n oorsig oor die prosesse betrokke by die daarstelling van ‘n filmklankbaan en sluit ook in ‘n beskrywing van die komponente van die klankbaan en aanbevelings vir die praktiese toepassing daarvan.
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Zarate, Orozco Ismael. "Software and Hardware-In-The-Loop Modeling of an Audio Watermarking Algorithm." Thesis, University of North Texas, 2010. https://digital.library.unt.edu/ark:/67531/metadc33221/.
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Due to the accelerated growth in digital music distribution, it becomes easy to modify, intercept, and distribute material illegally. To overcome the urgent need for copyright protection against piracy, several audio watermarking schemes have been proposed and implemented. These digital audio watermarking schemes have the purpose of embedding inaudible information within the host file to cover copyright and authentication issues. This thesis proposes an audio watermarking model using MATLAB® and Simulink® software for 1K and 2K fast Fourier transform (FFT) lengths. The watermark insertion process is performed in the frequency domain to guarantee the imperceptibility of the watermark to the human auditory system. Additionally, the proposed audio watermarking model was implemented in a Cyclone® II FPGA device from Altera® using the Altera® DSP Builder tool and MATLAB/Simulink® software. To evaluate the performance of the proposed audio watermarking scheme, effectiveness and fidelity performance tests were conducted for the proposed software and hardware-in-the-loop based audio watermarking model.
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Abrahão, Ana Maria Paes Leme Carrijo. "A musica na escola : um privilegio dos especialistas? - concepções dos professores sobre o talento musical e a musica na escola e a representação grafica do som de crianças de 3 a 6 anos de idade." [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/253294.
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Orientador: Orly Zucatto Mantovani de AssisDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Educação
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Resumo: A presente pesquisa pretende discutir a importância das atividades musicais para o trabalho com crianças no cotidiano da escola. Apresenta uma avaliação qualitativa intitulada rede semântica natural proposta por Figueroa, González e Solís (1981) sobre a concepção dos professores de educação infantil e ensino fundamental 1º e 2º ciclos de talento musical e a importância da música no ambiente escolar. Os resultados confirmam o julgamento, muito freqüente, do privilégio de poucos ¿dotados¿ de talento nato para o fazer musical e revela um reconhecimento das contribuições da música para o desenvolvimento cognitivo, afetivo, social e motor das crianças, embora as concepções dos professores sobre a música na escola não apresentem categorias que envolvam a prática musical como o cantar, tocar ou fazer música. Esses resultados provocaram algumas necessidades. Para tanto, pretendeu-se conhecer o processo de construção das noções musicais em crianças de educação infantil e propor um caminho de reflexão sobre as possibilidades musicais comum a todos. Assim, o estudo apresenta o registro gráfico do som realizado por crianças de 3 a 6 anos de idade que visa analisar à luz da psicologia genética o processo de representação gráfica do som e sua relação com a natureza da inteligência. Foram propostas duas observações, uma do ambiente sonoro da escola e outra da percepção de quatro instrumentos musicais: o par de cocos, o metalofone, a queixada e a flauta doce. Os estudos permitiram observar uma evolução do registro do som que parte das garatujas, sem semelhanças com os sons emitidos, passando pelo registro da fonte sonora, inicialmente sem nenhum sinal acompanhando o corpo do objeto e posteriormente com sinais que indicam o som como um prolongamento do objeto sonoro. Algumas representações apresentaram a evocação de objetos ausentes, características nas crianças pré-operatórias. Os registros mais evoluídos apresentaram o som desligado da fonte sonora se mantendo estável pela generalização do significante para um mesmo significado, caracterizando a passagem de símbolo para signo. A partir dessas observações, pôde-se concluir que a compreensão dos signos musicais exige a construção de estruturas mentais, fruto das explorações e invenções organizadas e criadas pelas crianças em contato com os elementos sonoros e das possibilidades de transformação do invisível para visível por meio da escrita, relacionando os signos arbitrários e convencionais às suas experiências anteriores. À guisa de conclusão, são apresentadas algumas reflexões sobre as práticas musicais decorrentes da exploração sonora e de suas representações escritas, possíveis de serem realizadas por qualquer profissional da educação, independente de ser ou não um especialista em música
Abstract: The present research intends to argue the importance of the musical activities for the work with children in the daily one of the school. It presents a qualitative evaluation intitled net natural semantics proposal for Figueroa, González and Solís (1981) on the conception of the professors of infantile education and basic education 1º and 2º cycles on musical talent and the importance of music in the pertaining to school environment. The results confirm the judgment, very frequent, of the privilege of few "endowed" with born talent to make musical comedy and disclose a recognition to it of the contributions of music for cognizance, affective, social and motor the development of the children, even so the conceptions of the professors on music in the school do not present categories that involve the practical musical comedy as singing, touching or to make music. These results had provoked some necessities. For in such a way, it was intended to know the process of construction of the musical slight knowledge in children of infantile education and to consider a reflection way on the musical possibilities common to all. Thus, the study it presents the graphical register of the sound carried through for children of 3 the 6 years of age that it aims at to analyze to the light of genetic psychology the process of graphical representation of the sound and its relation with the nature of intelligence. Two comments environment the school the sonorous another one of the perception of four musical instruments had been proposals, one of and: the pair of coconuts, metalofone, the jaw and the flute candy. The studies had allowed to observe an evolution of the register of the sound that has left of garatujas, without similarities with the emitted sounds, passing for the register of the sonorous source, initially without no signal following the body of the object and later with signals that indicate the sound as a prolongation of the sonorous object. Some representations had presented the absent, characteristic object mandate in the children daily pay-operative. The evolved registers more had presented the off sound of steady the sonorous source if keeping for the generalization of the significant one for one exactly meant, characterizing the ticket of symbol for sign. To leave of these comments, it could be concluded that the understanding of the musical signs demands the construction of mental structures, fruit of the explorations and inventions organized and created for the children in contact with the sonorous elements and of the possibilities of transformation of the invisible one for visible by means of the writing, relating the arbitrary and conventional signs to its previous experiences. To it stews of conclusion, are presented some reflections on the practical decurrent musical comedies of the sonorous exploration and its written, possible representations to be carried through for any professional of the education, independent of being or not a specialist in music
Mestrado
Psicologia, Desenvolvimento Humano e Educação
Mestre em Educação
42
Parry, Robert Mitchell. "Separation and Analysis of Multichannel Signals." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/19743.
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Music recordings contain the mixed contribution of multiple overlapping instruments. In order to better understand the music, it would be beneficial to understand each instrument independently. This thesis focuses on separating the individual instrument recordings within a song. In particular, we propose novel algorithms for separating instrument recordings given only their mixture.
When the number of source signals does not exceed the number of mixture signals, we focus on a subclass of source separation algorithms based on joint diagonalization. Each approach leverages a different form of source structure. We introduce repetitive structure as an alternative that leverages unique repetition patterns in music and compare its performance against the other techniques.
When the number of source signals exceeds the number of mixtures (i.e. the underdetermined problem), we focus on spectrogram factorization techniques for source separation. We extend single-channel techniques to utilize the additional spatial information in multichannel recordings, and use phase information to improve the estimation of the underlying components.
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Malhão, Rafael da Silva 1982. "Uma ecologia dos meios tecnológicos dos DJs de música eletrônica de pista : habilidades, percepção e corpo." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/279732.
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Orientador: Pedro Peixoto FerreiraDissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Filosofia e Ciências Humanas
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Resumo: A presente dissertação tem como objeto e objetivo central compreender o processo tecno-genético de formação dos DJs de Música Eletrônica de Pista (MEP) para uma atuação efetiva frente a uma pista de dança. Para dar conta da tarefa que me propus dediquei-me a analisar este processo a partir de três de abordagens distintas, a saber, tecnologia, técnica e habilidade, que assumem dinâmicas relacionais diferentes que dependem do objetivo e combinação estabelecida entre elas, e a partir destes diferentes cenários relacionais estas combinações orientam ritmos específicos de interação entre humanos e máquinas. Estas combinações e ritmos foram o núcleo para a análise mais profícuo identificado para explorar o DJ como conceito e prática no âmbito da MEP. Estas três abordagens visam desdobrar as questões relativas a cada tópico supracitado e a integração destas abordagens se dá por meio de uma experiência estética não contemplativa. A primeira abordagem tem como preocupação central as diferentes formas em que a tecnologia de reprodução sonora foi relevante para MEP e visa constituir uma base material da mudança tecnológica para as discussões abordadas subsequentemente. A segunda abordagem parte desta base tecnológica a fim de apresentar as possíveis formas de constituição das habilidades, das técnicas e do corpo por meio da atuação sinérgica para fins comuns entre DJs e tecnologias de reprodução sonora. A terceira abordagem se vale das duas anteriores para tentar compreender a relação que se estabelece entre estes modos tecnológicos e técnicos de formação das habilidades e percepção que contribuem na forma de interação entre DJs e pista de dança, atendo-se principalmente, nas potencialidades e especificidades de uma proposta tecno-estética que busca escapar da passividade contemplativa na relação entre público e executores de atos estéticos. Este percurso se fez necessário para a compreensão do papel das tecnologias na formação dos sentidos e das ações a eles correspondentes durante o processo de aprendizado das técnicas sendo elas de discotecagem ou modos de dança. Por fim, identifico, assim como alguns autores que perpassam o texto, que o modo de percepção, bem como o corpo que percebe ? e todas as implicações desta situação ? não são dados a priori, e sim, se constituem ao longo das diferentes interações com o ambiente e com a tecnologia. E que uma abordagem estética que privilegie a experiência estética mediada por objetos que não são necessariamente estéticos, mas objetos que possibilitam diferentes reticulações do espaço e do tempo por meio do seu modo de manipulação e inserção em contextos específicos foi a maneira mais interessante para descrever a relação entre DJs, tecnologias e pista de dança
Abstract: The aim of this study is to understand the techno-genetic process of the development of Electronic Dance Music (EDM) DJs in an effective performance in the dance floor. To be able to accomplish this task I analyse the process from three distinct approaches, namely technology, techniques, and skills that assume different relational dynamics depending on the goal and the combination stabilished among them, and from those different relational scenaries those combinations orient toward specific rhythms of interaction between mankind and machines.These combinations and rhythms were the most proficuous nucleous to the analysis, identified to explore the DJ as concept and practise in EDM. Those three approaches are to unfold the issues regarding each topic above mentioned and the integration of the approaches happens through a non-contemplative aesthetic experience. The first approach aims the different ways sound reproduction technology was relevant to EDM and intends to build a material base of technological change to the discussions subsequently dealt. The second approach derives from said technological base in order to present the possible ways of developing skills, techniques, and body by the synergic movement to common goals between DJs and sound reproduction technology. The third approach derives from the first two aiming to understand the relation stablished among the technological ways and the techniques to form the skills and perceptions that contribute the way of interaction between DJs and the dance floor. It focuses mainly in potencialities and specificity of the techno-aesthetic proposal that tries to scape from contemplative passivity in the relation between the audience and the performer of aesthetic acts. All this process was needed to understand the role the technologies play in the formation of senses and actions corresponding to them during the technique learning process of either DJing or dance moves. Consequently, I identified, as well as some autors who perpassed the text, the fact that the way of perception and the body that perceives and also all implications of this situation are not given a priori, and that way, are constituted during the different interactions with the environment and technology. Also an aesthetic approach that previleges the aesthetic experience mediated by objects not necessarily aesthetic, but objects with different reticulations of the space and the time through their form of manipulation and inserction in specific contexts was the most interesting way to describe the relation between DJs, technologies, and dance floor
Mestrado
Sociologia
Mestre em Sociologia
44
Chigwamba, Nyasha. "An investigation into the hardware abstraction layer of the plural node architecture for IEEE 1394 audio devices." Thesis, Rhodes University, 2009. http://hdl.handle.net/10962/d1004841.
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Digital audio network technologies are becoming more prevalent in audio related environments. Yamaha Corporation has created a digital audio network solution, named mLAN (music Local Area Network), that uses IEEE 1394 as its underlying network technology. IEEE 1394 is a digital network technology that is specifically designed for real-time multimedia data transmission. The second generation of mLAN is based on the Plural Node Architecture, where the control of audio and MIDI routings between IEEE 1394 devices is split between two node types, namely an Enabler and a Transporter. The Transporter typically resides in an IEEE 1394 device and is solely responsible for transmission and reception of audio or MIDI data. The Enabler typically resides in a workstation and exposes an abstract representation of audio or MIDI plugs on each Transporter to routing control applications. The Enabler is responsible for configuring audio and MIDI routings between plugs on different Transporters. A Hardware Abstraction Layer (HAL) within the Enabler allows it to uniformly communicate with Transporters that are created by various vendors. A plug-in mechanism is used to provide this capability. When vendors create Transporters, they also create device-specific plug-ins for the Enabler. These plug-ins are created against a Transporter HAL Application Programming Interface (API) that defines methods to access the capabilities of Transporters. An Open Generic Transporter (OGT) guideline document which models all the capabilities of Transporters has been produced. These guidelines make it possible for manufacturers to create Transporters that make use of a common plug-in, although based on different hardware architectures. The introduction of the OGT concept has revealed additional Transporter capabilities that are not incorporated in the existing Transporter HAL API. This has led to the underutilisation of OGT capabilities. The main goals of this investigation have been to improve the Enabler’s plug-in mechanism, and to incorporate the additional capabilities that have been revealed by the OGT into the Transporter HAL API. We propose a new plug-in mechanism, and a new Transporter HAL API that fully utilises both the additional capabilities revealed by the OGT and the capabilities of existing Transporters.
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Foulkes, Philip James. "A grid based approach for the control and recall of the properties of IEEE 1394 audio devices." Thesis, Rhodes University, 2009. http://hdl.handle.net/10962/d1004836.
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The control of modern audio studios is complex. Audio mixing desks have grown to the point where they contain thousands of parameters. The control surfaces of these devices do not reflect the routing and signal processing capabilities that the devices are capable of. Software audio mixing desk editors have been developed that allow for the remote control of these devices, but their graphical user interfaces retain the complexities of the audio mixing desk that they represent. In this thesis, we propose a grid approach to audio mixing. The developed grid audio mixing desk editor represents an audio mixing desk as a series of graphical routing matrices. These routing matrices expose the various signal processing points and signal flows that exist within an audio mixing desk. The routing matrices allow for audio signals to be routed within the device, and allow for the device’s parameters to be adjusted by selecting the appropriate signal processing points. With the use of the programming interfaces that are defined as part of the Studio Connections – Total Recall SDK, the audio mixing desk editor was integrated with compatible DAW applications to provide persistence of audio mixing desk parameter states. Many audio studios currently use digital networks to connect audio devices together. Audio and control signals are patched between devices through the use of software patchbays that run on computers. We propose a double grid-based FireWire patchbay aimed to simplify the patching of signals between audio devices on a FireWire network. The FireWire patchbay was implemented in such a way such that it can host software device editors that are Studio Connections compatible. This has allowed software device editors to be associated with the devices that are represented on the FireWire patchbay, thus allowing for studio wide control from a single application. The double grid-based patchbay was implemented such that it can be hosted by compatible DAW applications. Through this, the double grid-based patchbay application is able to provide the DAW application with the state of the parameters of the devices in a studio, as well as the connections between them. The DAW application may save this state data to its native song files. This state data may be passed back to the double grid-based patchbay when the song file is reloaded at a later stage. This state data may then be used by the patchbay to restore the parameters of the patchbay and its device editors to a previous state. This restored state may then be transferred to the hardware devices being represented by the patchbay.
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Durey, Adriane Swalm. "Melody spotting using hidden Markov models." Diss., Available online, Georgia Institute of Technology, 2004:, 2003. http://etd.gatech.edu/theses/available/etd-04082004-180126/unrestricted/durey%5Fadriane%5Fs%5F200312%5Fphd.pdf.
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Chigwamba, Nyasha. "An investigation of parameter relationships in a high-speed digital multimedia environment." Thesis, Rhodes University, 2014. http://hdl.handle.net/10962/d1021153.
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With the rapid adoption of multimedia network technologies, a number of companies and standards bodies are introducing technologies that enhance user experience in networked multimedia environments. These technologies focus on device discovery, connection management, control, and monitoring. This study focused on control and monitoring. Multimedia networks make it possible for devices that are part of the same network to reside in different physical locations. These devices contain parameters that are used to control particular features, such as speaker volume, bass, amplifier gain, and video resolution. It is often necessary for changes in one parameter to affect other parameters, such as a synchronised change between volume and bass parameters, or collective control of multiple parameters. Thus, relationships are required between the parameters. In addition, some devices contain parameters, such as voltage, temperature, and audio level, that require constant monitoring to enable corrective action when thresholds are exceeded. Therefore, a mechanism for monitoring networked devices is required. This thesis proposes relationships that are essential for the proper functioning of a multimedia network and that should, therefore, be incorporated in standard form into a protocol, such that all devices can depend on them. Implementation mechanisms for these relationships were created. Parameter grouping and monitoring capabilities within mixing console implementations and existing control protocols were reviewed. A number of requirements for parameter grouping and monitoring were derived from this review. These requirements include a formal classification of relationship types, the ability to create relationships between parameters with different underlying value units, the ability to create relationships between parameters residing on different devices on a network, and the use of an event-driven mechanism for parameter monitoring. These requirements were the criteria used to govern the implementation mechanisms that were created as part of this study. Parameter grouping and monitoring mechanisms were implemented for the XFN protocol. The mechanisms implemented fulfil the requirements derived from the review of capabilities of mixing consoles and existing control protocols. The formal classification of relationship types was implemented within XFN parameters using lists that keep track of the relationships between each XFN parameter and other XFN parameters that reside on the same device or on other devices on the network. A common value unit, known as the global unit, was defined for use as the value format within value update messages between XFN parameters that have relationships. Mapping tables were used to translate the global unit values to application-specific (universal) units, such as decibels (dB). A mechanism for bulk parameter retrieval within the XFN protocol was augmented to produce an event-driven mechanism for parameter monitoring. These implementation mechanisms were applied to an XFN-protocol-compliant graphical control application to demonstrate their usage within an end user context. At the time of this study, the XFN protocol was undergoing standardisation within the Audio Engineering Society. The AES-64 standard has now been approved. Most of the implementation mechanisms resulting from this study have been incorporated into this standard.
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Chen, Howard. "AZIP, audio compression system: Research on audio compression, comparison of psychoacoustic principles and genetic algorithms." CSUSB ScholarWorks, 2005. https://scholarworks.lib.csusb.edu/etd-project/2617.
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The purpose of this project is to investigate the differences between psychoacoustic principles and genetic algorithms (GA0). These will be discussed separately. The review will also compare the compression ratio and the quality of the decompressed files decoded by these two methods.
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Ceretta, Fernanda Manzo. "O design de som de monstros do cinema: uma cartografia dos processos de criação de identidades sonoras na construção de personagens." Pontifícia Universidade Católica de São Paulo, 2018. https://tede2.pucsp.br/handle/handle/21201.
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Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq
This research analyzes the sound design of movie monsters, especially their voices. Chewbacca (Star Wars, 1977), Godzilla (1954) and Predator (1987) constitute our corpus. These monsters have voices composed by designers who have experimented different creation processes, using sounds generated by nature, body and manipulated objects, in order to create the sound identity of these characters. We investigate the contexts of these creation processes and the resulting sounds in their particularities to make a proposition of a method for creating the sound of monsters. Our method covers the potential sources of base sounds and other sonic characteristics such as frequencies, timbre and intensity. The research was based in the observation of the selected audio-visual materials and in the documentation available regarding the making ofs (which is vast, given the popularity of the selected monsters). The thesis is based mainly on articulations with the works of Rick Altman, Michel Chion and William Whittington, on the cinematographic sound, and of Theo Van Leeuwen in his proposition of sonorous analysis
Este trabalho analisa o sound design de monstros do cinema, sobretudo suas vozes. Chewbacca (Star Wars, 1977), Godzilla (1954) e Predador (1987) constituem o corpus da presente pesquisa. Estes monstros possuem vozes compostas por designers que experimentaram diferentes processos de criação, utilizando sons na natureza, do corpo e de objetos manipulados para criar a identidade sonora destas personagens. investigamos os contextos destes processos de criação e os sons criados, em suas particularidades, para compor uma proposta de método de composição de som de monstros, o qual abarca as potenciais fontes dos sons de base e demais características sonoras, como frequências, timbres e intensidade. A pesquisa foi feita a partir da observação dos materiais audiovisuais selecionados e do resgate da documentação disponível sobre os bastidores da criação dos mesmos (bastante vasta dada a popularidade dos monstros selecionados). A tese se baseia sobretudo em articulações com obras de Rick Altman, Michel Chion, William Whittington acerca do som cinematográfico e em Theo Van Leeuwen em sua proposição de análise sonora
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Stanley, Raymond M. "Toward adapting spatial audio displays for use with bone conduction the cancellation of bone-conducted and air-conducted sound waves /." Thesis, Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-11022006-103809/.
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