Relevant bibliographies by topics / Psychoacoustic experiments

Academic literature on the topic 'Psychoacoustic experiments'

Author: Grafiati
Published: 10 December 2022
Last updated: 29 January 2023

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Journal articles on the topic "Psychoacoustic experiments"

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Fritz, Claudia, Ian Cross, Brian C. J. Moore, and Jim Woodhouse. "Psychoacoustic experiments with virtual violins." Journal of the Acoustical Society of America 120, no. 5 (November 2006): 3364. http://dx.doi.org/10.1121/1.4781517.

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Roberts, Armisha, and Kyla McMullen. "The Effects of Laboratory Environment Type on Intermittent Sound Localization." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 66, no. 1 (September 2022): 1235–39. http://dx.doi.org/10.1177/1071181322661494.

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Virtual reality (VR) and augmented reality (AR) are gaining commercial popularity. 3D sound guidelines for AR and VR are derived from psychoacoustic experiments performed in contrived, sterile laboratory settings. Often, these settings are expensive, inaccessible, and unattainable for researchers. The feasibility of conducting psychoacoustic experiments outside the laboratory remains unclear. To investigate, we explore 3D sound localization experiments in-lab (IL) and out-of-the lab (OL). The IL study condition was conducted as a traditional psychoacoustic experiment in a soundproof booth. The OL condition occurred in a quiet environment of the participants' choosing, using commercial-grade headphones. Localization performance did not vary significantly for OL participants compared to the IL participants, with larger variation observed in the IL condition. Participants needed significantly more time to complete the experiment IL than OL. The results suggest that conducting headphone-based psychoacoustic experiments outside the laboratory is feasible if completion time is negligible.
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Lapsley Miller, Judi A. "New techniques to reduce observer inconsistency in psychoacoustic experiments." Journal of the Acoustical Society of America 107, no. 5 (May 2000): 2914. http://dx.doi.org/10.1121/1.428850.

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Luo, Qi. "The Improving Effect of Intelligent Speech Recognition System on English Learning." Advances in Multimedia 2022 (March 10, 2022): 1–13. http://dx.doi.org/10.1155/2022/2910859.

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To improve the effect of English learning in the context of smart education, this study combines speech coding to improve the intelligent speech recognition algorithm, builds an intelligent English learning system, combines the characteristics of human ears, and studies a coding strategy of a psychoacoustic masking model based on the characteristics of human ears. Moreover, this study analyzes in detail the basic principles and implementation process of the psychoacoustic model coding strategy based on the characteristics of the human ear and completes the channel selection by calculating the masking threshold. In addition, this study verifies the effectiveness of the algorithm in this study through simulation experiments. Finally, this study builds a smart speech recognition system based on this model and uses simulation experiments to verify the effect of smart speech recognition on English learning. To improve the voice recognition effect of smart speech, band-pass filtering and envelope detection adopt the gammatone filter bank and Meddis inner hair cell model in the mathematical model of the cochlear system; at the same time, the masking effect model of psychoacoustics is introduced in the channel selection stage to prevent noise. Sex has been improved, and the recognition effect of smart voice has been improved. The analysis shows that the intelligent speech recognition system proposed in this study can effectively improve the effect of English learning. In particular, it has a great effect on improving the effect of oral learning.
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Williams, H. E. F., G. L. Gibian, E. N. Harnden, and A. Evans. "Using MIDI, the standard Musical Instrument Digital Interface, for psychoacoustic experiments." Journal of the Acoustical Society of America 83, S1 (May 1988): S16. http://dx.doi.org/10.1121/1.2025224.

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Cumming, W. T., and J. G. Wells. "Flexible PC-based workstation for auditory evoked potential and psychoacoustic experiments." Medical & Biological Engineering & Computing 30, no. 3 (May 1992): 373–76. http://dx.doi.org/10.1007/bf02446978.

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Trautmann, Florian, Björn Knöfel, Welf-Guntram Drossel, Jan Troge, Markus Freund, Lars Penter, and Damian Anders. "Subjective hearing sensation of process variations at a milling machine. How reliable will chatter marks be detected?" INTER-NOISE and NOISE-CON Congress and Conference Proceedings 263, no. 2 (August 1, 2021): 4088–99. http://dx.doi.org/10.3397/in-2021-2599.

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Intuition enables experienced machine operators to detect production errors and to identify their specific sources. A prominent example in machining are chatter marks caused by machining vibrations. The operator's assessment, if the process runs stable or not, is not exclusively based on technical parameters such as rotation frequency, tool diameter, or the number of teeth. Because the human ear is a powerful feature extraction and classification device, this study investigates to what degree the hearing sensation influences the operators decision making. A steel machining process with a design of experiments (DOE)-based variation of process parameters was conducted on a milling machine. Microphone and acceleration sensors recorded machining vibrations and machine operators documented their hearing sensation via survey sheet. In order to obtain the optimal dataset for calculating various psychoacoustic characteristics, a principle component analysis was conducted. The subsequent correlation analysis of all sensor data and the operator information suggest that psychoacoustic characteristics such as tonality and loudness are very good indicators of the process quality perceived by the operator. The results support the application of psychoacoustic technology for machine and process monitoring.
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Ewert, Stephan D., and Torsten Dau. "Reproducible psychoacoustic experiments and computational perception models in a modular software framework." Journal of the Acoustical Society of America 141, no. 5 (May 2017): 3630. http://dx.doi.org/10.1121/1.4987809.

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V. Kane, Prasad, and Atul B. Andhare. "End of the Assembly Line Gearbox Fault Inspection Using Artificial Neural Network and Support Vector Machines." March 24, No 1 (March 2019): 68–84. http://dx.doi.org/10.20855/ijav.2019.24.11258.

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Gear fault diagnosis is important not only during the routine maintenance of machinery, but also during the inspection of newly manufactured gearboxes at the end of the assembly line. This paper discusses the application of an artificial neural network (ANN) and a support vector machine (SVM) for identifying faults in the gearbox, using the psychoacoustic and conventional statistical features extracted from acoustics and vibration signals. It is observed that at the end of the assembly line, the gearbox is tested by mounting it on a test bench and driving it by an electric motor. Based on the sound emitted while running on the test bench, the operator decides on the acceptance of the gearbox for further assembly on a vehicle or machine. This method of acceptance or rejection of the gearbox involves subjectivity and it is not reliable. Hence, it is important to have a reliable and objective fault detection and diagnosis method. To eliminate subjectivity, psychoacoustic features, which are derived from the science of listening in human beings, are proposed to be used as features, along with ANN and SVMs as classifiers. To ascertain the ability of the psychoacoustic features to classify faults, laboratory experiments are carried on a test setup by simulating faults like a gear shaft misalignment, a profile error of a gear tooth, a crack at the root of the tooth, and a broken tooth. ANN and SVM are trained with the psychoacoustic features extracted from the acoustic signal and other statistical features from the acoustics and vibration signals. The trained SVM and ANN are tested for fault classification for these features and their accuracy is compared. Fault classification accuracy is found to be 95.65% for ANN and 93.44% for SVM with psychoacoustic features and is found to be better than pure statistical features obtained from the vibration and acoustic signals. With the optimised ANN and SVM architecture, SVM is found to be performing better than ANN. It is concluded that the psychoacoustic features, along with the ANN and SVM method, could be adopted at the end of assembly line inspection to make the inspection process more objective.
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Wrzosek, Małgorzata, Justyna Maculewicz, Honorata Hafke-Dys, Agnieszka Nowik, Anna Preis, and Grzegorz Kroliczak. "Pitch Processing of Speech: Comparison of Psychoacoustic and Electrophysiological Data." Archives of Acoustics 38, no. 3 (September 1, 2013): 375–81. http://dx.doi.org/10.2478/aoa-2013-0044.

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Abstract The present study consisted of two experiments. The goal of the first experiment was to establish the just noticeable differences for the fundamental frequency of the vowel /u/ by using the 2AFC method. We obtained the threshold value for 27 cents. This value is larger than the motor reaction values which had been observed in previous experiments (e.g. 9 or 19 cents). The second experiment was intended to provide neurophysiological confirmation of the detection of shifts in a frequency, using event-related potentials (ERPs). We concentrated on the mismatch negativity (MMN) - the component elicited by the change in the pattern of stimuli. Its occurrence is correlated with the discrimination threshold. In our study, MMN was observed for changes greater than 27 cents - shifts of ±50 and 100 cents (effect size - Cohen’s d = 2.259). MMN did not appear for changes of ±10 and 20 cents. The results showed that the values for which motor responses can be observed are indeed lower than those for perceptual thresholds.
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Dissertations / Theses on the topic "Psychoacoustic experiments"

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Cheng, Ray C. (Ray Chung-Tim) 1980. "Software for psychoacoustic experiment design." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/87399.

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Welch, Norma 1941. "Psychoacoustical demonstrations and experiments over the World Wide Web." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=24108.

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The World Wide Web provides the capability of delivering multi-media presentations to a wide audience. This thesis details the design and development of the site Psychoacoustical demonstrations and experiments at McGill University: it discusses site organization, selection of materials and development methods. In order to evaluate the utility of the site, site usage data, feedback from readers and data from experiments are analyzed and discussed. The thesis examines the success of the site in attracting a wide audience and holding its attention, as course material, in gathering data from psychoacoustical experiments, and in obtaining feedback from readers. Suggestions for future sites of this type are included.
The test of the thesis should be read in conjunction with experiencing the World Wide Web site at http://www.music.mcgill.ca/auditory/Auditory.html.
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Hill, Toby Jonathan Willoughby. "Experiments on the perception of pitch increments in simple tone sequences." Thesis, University of Exeter, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341191.

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Smith, Stuart Joseph Cecil. "Modelling psychoacoustic experiment outcomes from space-time neural firing patterns for acoustic and electrical hearing." Diss., University of Pretoria, 2011. http://hdl.handle.net/2263/31470.

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Stadler, Svante. "Probabilistic Modelling of Hearing : Speech Recognition and Optimal Audiometry." Licentiate thesis, Stockholm : Skolan för elektro- och systemteknik, Kungliga Tekniska högskolan, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-10386.

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Silva, Micael Antunes da. "Redução da dissonância sensorial em uma escala temperada utilizando timbres inarmônicos: uma abordagem experimental e aplicações artísticas." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/27/27158/tde-11032019-114249/.

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A dissonância sensorial é um conceito que restringe a noção da dissonância à sua dimensão psicofísica, por meio do fenômeno psicoacústico conhecido como rugosidade. Esse conceito foi explorado neste trabalho experimentalmente tendo como foco o teste da hipótese de que é possível modelar a dissonância sensorial em escalas do temperamento por igual utilizando-se timbres inarmônicos. A dissertação é dividida em 5 partes. No capítulo 2, realiza-se uma revisão bibliográfica compilando os principais modelos de dissonância sensorial baseados em estudos experimentais, e uma revisão do sistema de afinação conhecido como temperamento por igual. No capítulo 3 apresenta-se uma proposta de síntese de espectros inarmônicos que modelam a dissonância para o temperamento por igual. Em seguida, apresenta-se um teste subjetivo realizado que avaliou a dissonância sensorial em espectros construídos com dissonância modelada para uma escala temperada de 8 partes iguais. No capítulo 4, são apresentadas aplicações artísticas realizadas, consequentes do estudo da modelagem da dissonância sensorial em escalas do temperamento por igual, como uma proposta de mapeamento de escalas em um teclado MIDI e dois relatos composicionais. Discussões acerca dos resultados e apontamentos para trabalhos futuros são abordados no capítulo final. Os resultados da pesquisa apontam para o fato de os modelos de dissonância sensorial estudados não serem suficientemente eficazes na tarefa de realizar uma avaliação precisa do fenômeno da dissonância sensorial em sons inarmônicos. Além disso, como resultado, abriram-se novas perspectivas para práticas artísticas com dissonância modelada, onde discutimos o impacto do uso dos modelos de dissonância na prática composicional e no contexto da música atual.
Sensory dissonance is a concept that restricts the dissonance to their psychophysical dimension, through the psychoacoustics phenomenon known as roughness. This concept was explored in this work experimentally, based on the assumption that it is possible to model the sensory dissonance in equal tempered scales, using inharmonic spectra. Our dissertation is divided into five parts. Firstly, on chapter 2, a literature review exposing the main models of sensory dissonance that are based on experimental studies is presented, as well as a revision of the equal tempered scale system. Secondly, the first part of Chapter 3 presents a method and an algorithm to synthetize inharmonic spectra that models the dissonance for equal tempered scales. Then, in the second part of chapter 3, we expose an experimental test that aims to evaluate the sensory dissonance on a spectrum generated to model the dissonance in a scale that divides the octave into 8 equal parts. On chapter 4, we propose artistic applications using the dissonance studies developed in this work, as well as a prototype of equal tempered scales controller using a MIDI keyboard and two compositional reports. Finally, the results of this research are shown in chapter 5, that highlights the fact that the models of sensory dissonance approached in this dissertation are not effective to calculate a precise estimation of sensory dissonance in inharmonic spectra. Besides that, as a result, new perspectives for artistic practices using dissonance modeling are presented, as we discuss the impact of dissonance models in the context of composition and contemporary music.
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Kovařík, Tomáš. "Řízení poslechových testů pro subjektivní hodnocení kvality audio signálu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219467.

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The point of this thesis was to perform listening tests. Appropriate methods of performance were selected for these tests, tests were carried out and the data were analyzed using statistical analysis. Then was compiled the resulting interval scale from results of the first test and in the second listening test were determined average values SNR for background noises.
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Rothwell, Clayton D. "Multi-Sensory Integration in Motion Perception: Do Moving Sounds Facilitate/Interfere with Smooth Pursuit Eye Movements?" Wright State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=wright1413319214.

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Cengarle, Giulio. "3D audio technologies : applications to sound capture, post-production and listener perception." Doctoral thesis, Universitat Pompeu Fabra, 2012. http://hdl.handle.net/10803/101415.

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La llegada del sonido 3D está imponiendo cambios en varias etapas del flujo de trabajo, desde los sistemas de captación hasta las metodologías de postproducción y las configuraciones de altavoces. Esta tesis trata varios aspectos relacionados con el audio 3D: en la parte de captación, presentamos un estudio sobre las características de los micrófonos tetraédricos y una solución para obtener las componentes Ambisonics del segundo orden usando un pequeño número de transductores del primer orden; en la parte de producción, se presenta una aplicación para la mezcla automatizada de eventos deportivos, para reducir la complexidad del multicanal en tiempo real; para la restitución del audio independiente del sistema de altavoces, en el que los niveles de salida a los altavoces son una incógnita hasta la decodificación, se propone un detector de clipping independiente del layout. Finalmente, se presentan test psico-acústicos para validar aspectos perceptivos relacionados con el audio 3D.
The advent of 3D audio is dictating changes in several stages of the audio work-flow, from recording systems and microphone configurations, to post-production methodologies and loudspeaker configurations. This thesis tackles aspects related to 3D audio arising in the various stages of production. In the recording part, we present a study on the accuracy of tetrahedral microphones and a solution for obtaining second-order Ambisonics responses from first-order transducers using a small number of sensors; in the production stage, we introduce an application for automated assisted mixing of sport events, to reduce the complexity of managing multiple audio channels in real time; a clipping detector is proposed for the rendering of layout-independent audio content to generic playback systems, where the signal levels sent to the speakers are unknown until the decoding stage; finally, psychoacoustic experiments are presented for the validation of perceptual and aesthetic aspects related to 3D audio.
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Books on the topic "Psychoacoustic experiments"

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The psychophysical ear: Musical experiments, experimental sounds, 1840-1910. Cambridge, Mass: MIT Press, 2013.

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Morris, Crystlette Beth. A psychophysical and perceptual investigation of the octave illusion. 1988.

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Book chapters on the topic "Psychoacoustic experiments"

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Xie, Bosun. "Psychoacoustic and subjective assessment experiments on spatial sound." In Spatial Sound, 691–710. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003081500-15.

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Furlani, A. L., M. H. Costa, and M. C. Tavares. "Pupillometric System for Cognitive Load Estimation in Noisy-Speech Intelligibility Psychoacoustic Experiments: Preliminary Results." In XXVII Brazilian Congress on Biomedical Engineering, 1533–38. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-70601-2_225.

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Parncutt, Richard. "Experiments." In Harmony: A Psychoacoustical Approach, 98–134. Berlin, Heidelberg: Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-74831-8_5.

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Wagner, Hermann. "Sound-localization Experiments in Owls." In Methods in Comparative Psychoacoustics, 183–94. Basel: Birkhäuser Basel, 1995. http://dx.doi.org/10.1007/978-3-0348-7463-2_16.

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May, Bradford J., Aileen Y. Huang, Cynthia M. Aleszczyk, and Robert D. Hienz. "Design and Conduct of Sensory Experiments for Domestic Cats." In Methods in Comparative Psychoacoustics, 95–108. Basel: Birkhäuser Basel, 1995. http://dx.doi.org/10.1007/978-3-0348-7463-2_9.

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Gerhardt, H. Carl. "Phonotaxis in Female Frogs and Toads: Execution and Design of Experiments." In Methods in Comparative Psychoacoustics, 209–20. Basel: Birkhäuser Basel, 1995. http://dx.doi.org/10.1007/978-3-0348-7463-2_18.

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Bhandiwad, Ashwin A., and Joseph A. Sisneros. "Revisiting Psychoacoustic Methods for the Assessment of Fish Hearing." In Advances in Experimental Medicine and Biology, 157–84. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-21059-9_8.

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Sun, Jianwei, Koichi Yonezawa, Eiji Shima, and Hao Liu. "Experimental Investigations on Aerodynamic and Psychoacoustic Characteristics of Loop-Type Propeller." In Lecture Notes in Electrical Engineering, 89–101. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-2689-1_7.

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"Experimental Design in Psychoacoustic Research." In Music, Cognition, and Computerized Sound. The MIT Press, 1999. http://dx.doi.org/10.7551/mitpress/4808.003.0025.

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Ehle, Robert C. "How We Hear and Experience Music." In Knowledge Visualization and Visual Literacy in Science Education, 199–217. IGI Global, 2016. http://dx.doi.org/10.4018/978-1-5225-0480-1.ch008.

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This chapter examines occurrences and events associated with the experience of composing, playing, or listening to music. First it examines virtual music, and then recounts an experiment on the nature of pitch and psychoacoustics of resultant tones. The final part discusses the prenatal origins of musical emotion as the case for fetal imprinting.
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Conference papers on the topic "Psychoacoustic experiments"

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Brzuchalski, Grzegorz. "Quantization and psychoacoustic model in audio coding in advanced audio coding." In Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2011, edited by Ryszard S. Romaniuk. SPIE, 2011. http://dx.doi.org/10.1117/12.905576.

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Altinsoy, M. E., and S. Atamer. "Sound Label for Household Appliances." In ASME 2018 Noise Control and Acoustics Division Session presented at INTERNOISE 2018. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/ncad2018-6148.

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Household appliances and their sound quality are important for our daily life quality. However the appropriate characterization of their sound is a difficult task. Not only product users but also manufacturers can profit from a sound label which characterize the perception of the customers. The purchase decision-making process according to acoustic criteria will be supported by such kind of label. In addition, a label and its components give orientation to the manufacturers during their product development process. Essential aspect for such kind of label is that it should represent the perception of the customers. Therefore psychoacoustical properties, e.g., loudness, sharpness, roughness, tonality, etc., are advantageous for characterization purposes. It would be beneficial to combine these psychoacoustical descriptors into a sound quality label, which is easy to understand. The authors have developed several sound labels for household appliances based on psychoacoustic properties. These sound labels are the result of the listening experiments which were conducted with potential customers. In this paper, various aspects of these investigations are summarized, extended and discussed.
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Ziemer, Tim, and Holger Schultheis. "The CURAT Sonification Game: Gamification for Remote Sonification Evaluation." In ICAD 2021: The 26th International Conference on Auditory Display. icad.org: International Community for Auditory Display, 2021. http://dx.doi.org/10.21785/icad2021.026.

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As sonification is supposed to communicate information to users, experimental evaluation of the subjective appropriateness and effectiveness of the sonification design is often desired and sometimes indispensable. Experiments in the laboratory are typically restricted to short-term usage by a small sample size under unnatural conditions. We introduce the multi-platform CURAT Sonification Game that allows us to evaluate our sonification design by a large population during long-term usage. Gamification is used to motivate users to interact with the sonification regularly and conscientiously over a long period of time. In this paper we present the sonification game and some initial analyses of the gathered data. Furthermore, we hope to reach more volunteers to play the CURAT Sonification Game and help us evaluate and optimize our psychoacoustic sonification design and provide feedback on the game and recommendations for future developments.
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Ziemer, Tim, and Holger Schultheis. "A Psychoacoustic Auditory Display for Navigation." In The 24th International Conference on Auditory Display. Arlington, Virginia: The International Community for Auditory Display, 2018. http://dx.doi.org/10.21785/icad2018.007.

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A psychoacoustic auditory display for navigation in twodimensional space is presented. The auditory display is examined in an experiment with novice users. Trajectory analysis indicates that users were able to a) accurately find sonified targets b) analyze the sonification axis-by-axis c) integrate the sonified dimensions to approach the target on the shortest path. Techniques developed in this work appear to work equally well with three-dimensional coordinates.
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Tsakiraki, Eleni S., Nikolaos N. Tsiaparas, Maria I. Christopoulou, Charalabos C. Papageorgiou, and Konstantina S. Nikita. "Neural potentials disorder during differential psychoacoustic experiment evaluated by Discrete Wavelet analysis." In 2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). IEEE, 2014. http://dx.doi.org/10.1109/embc.2014.6944855.

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Zhao, Yuli, Laith Neima Egab, Weishan Chen, Haiqiao Wei, and Xu Wang. "Development of 45° Incident Angle Sound Absorption Coefficient Test Device for Design of Vehicle Interior Trim Sound Package." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-36103.

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This paper presents a new type of test device, which is the 45-degree incident angle sound absorption coefficient (SAC) test device. A V-shaped acoustic wave-guide with the two branches forming a 45 degree angle from the horizontal direction was designed to measure the sound absorption coefficient of installed trim materials. The device was also designed for the subjective evaluation and objective psychoacoustic metric target setting of a sound source. The 45-degree incident angle sound absorption coefficient test device can also be applied to the design of the vehicle interior trim materials or sound package to minimize the negative effect of interior noise. The measurement principle of the 45-degree incident angle SAC device will be introduced first, and the experiment procedure will be then illustrated. Different kinds of trim materials were tested. The measured sound pressure data was processed with the help of the MATLAB program codes, and then the sound absorption coefficient curves were calculated and plotted. The results show the 45-degree incident angle sound absorption coefficient measurement device is a useful tool for the measurement of the trim materials for their sound absorption coefficient and for analysis of their effect on the psychoacoustic performance of a sound source. Meanwhile, a psychoacoustic analysis of sound pressure data of a sound source using ArtemiS software allows for the design of a preferred sound in the device using trim materials. These have been tested by the 45-degree incident angle SAC device.
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Ortega-Gonza´lez, Vladimir, Samir Garbaya, and Fre´de´ric Merienne. "An Approach for Studying the Effect of High-Level Spatial Properties of 3D Audio in Interactive Systems." In ASME-AFM 2009 World Conference on Innovative Virtual Reality. ASMEDC, 2009. http://dx.doi.org/10.1115/winvr2009-756.

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In this paper we briefly describe an approach for understanding the psychoacoustic and perceptual effects of what we have identified as the high-level spatial properties of 3D audio. The necessity of this study is firstly presented within the context of interactive applications such as Virtual Reality and Human Computer Interfaces. As a result of the bibliographic research in the field we identified the main potential functions of 3D audio spatial stimulation in interactive applications beyond traditional sound spatialization. In the same sense, a classification of the high-level aspects involved in spatial audio stimulation is proposed and explained. Immediately, the case of study, the experimental methodology and the framework are described. Finally, we present the expected results as well as their usefulness within the context of a larger project.
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Ule, Helen, Colin Novak, Robert Gaspar, Arunima Panigrahy, and Gamal Refai-Ahmed. "Effect of Next Generation Computer Graphic Card Blower Fan Speed on Thermal Performance and Acoustic Noise With Psychoacoustic Metrics." In ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems collocated with the ASME 2005 Heat Transfer Summer Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/ipack2005-73180.

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Graphic Processor Units (GPUs) on the latest models of computer graphic cards generate significant amounts of heat. In fact, the required dissipation rate is so large that cooling fans mounted on heat-sinks must be used to maintain satisfactory GPU temperatures. The packaging of these fans is small and similar designs have been used for cooling of electronic packaging for decades. The appropriate application of these fans as well as their optimal design for minimal noise generation and maximum air movement has not kept pace with that of large industrial sized fans. Where space limitations allow and heat transfer requirements dictate, blower type fans are implemented because they are capable of delivering relatively high flow rates in high impedance environments when they are compared to more traditional axial flow fans. The operation of these blower fans, particularly at high speeds, results in the generation of noise which is experienced by the user. Both computer manufacturers and consumers alike have deemed this noise to be excessive and annoying. The fan model predictions and the operational reality of the higher fan speeds needed to deliver increased air flow both lead to the reality of higher noise levels. The purpose of this study was to experimentally investigate the realized thermal and acoustic performance of a blower style fan-sink mounted on an advanced graphics port (AGP) card. The goal of this investigation was to determine what thermal benefits of higher flow rate are realized by the blower fan at the expense of increased noise emissions. The experimental results of thermal measurement results spanning the operating speed of the fan are presented and accompanied by the noise data. These data include both traditional acoustic analysis techniques using sound pressure and power level measurements as well as psychoacoustic metrics. The result of the thermal testing suggests that the rate of improvement in thermal performance decreases as the blower fan speed increases. As expected, an increase in noise level was also observed. Of particular interest were the results of the psychoacoustic analysis which indicate a similar detrimental effect with increased fan speed for some metrics, while other metrics indicate no change across the operating speed range of the blower fan.
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