Academic literature on the topic 'Architectural acoustics; Sound – Measurement; Sound – Reverberation'
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Journal articles on the topic "Architectural acoustics; Sound – Measurement; Sound – Reverberation"
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Tomiku, Reiji, Noriko Okamoto, Toru Otsuru, Shun Iwamoto, and Shoma Suzuki. "Finite element sound field analysis on measurement of absorption coefficient in a reverberation room -Relationships between inclination of walls and measurement results-." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 263, no. 1 (August 1, 2021): 5571–77. http://dx.doi.org/10.3397/in-2021-3158.
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The absorption coefficients in a reverberation room are most representative measure for evaluating absorption performance of architectural materials. However, it is well known that measurement results of the coefficient vary according to a room shape of the measurement and area of the specimen. Numerical analyses based on wave acoustics are effective tools to investigate these factors on absorption coefficient measurement in reverberation room. In this study, sound fields for the measurement of absorption coefficient in reverberation room are analyzed by time domain finite element method (TDFEM). This study shows effectiveness of the analysis for investigation on causes of variation in the measurement results and improvement methods of the measurement. First, some measurement sound fields for absorption coefficient in reverberation rooms the walls of which are incline or decline are analyzed by the TDFEM. Next, reverberation times in each sound fields are calculated from the results obtained by TDFEM and the absorption coefficients are evaluated from the reverberation time of the room with and without specimen. Finally, the relationships among room shape, degree of inclination of the wall, the sound absorption coefficient of the specimen, frequencies and the measurement absorption coefficient are investigated.
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Astolfi, Arianna, Elena Bo, Francesco Aletta, and Louena Shtrepi. "Measurements of Acoustical Parameters in the Ancient Open-Air Theatre of Tyndaris (Sicily, Italy)." Applied Sciences 10, no. 16 (August 15, 2020): 5680. http://dx.doi.org/10.3390/app10165680.
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The emerging field of archaeoacoustics is attracting increasing research attention from scholars of different disciplines: the investigation of the acoustic features of ancient open-air theatres is possibly one of its main themes. In this paper, the outcomes of a measurement campaign of acoustical parameters in accordance with ISO 3382-1 in the ancient theatre of Tyndaris (Sicily) are presented and compared with datasets from other sites. Two sound sources were used (firecrackers and dodecahedron) and their differences were analysed. A very good reproducibility has been shown between the two measurement chains, with differences on average of 0.01 s for reverberation time T20, and less than 0.3 dB for Clarity C50 and C80 and for sound strength. In general, results show that the reverberation time and strength of sound values are relatively low when compared with other theatres because of the lack of the original architectural element of the scaenae frons. When combining this effect with the obvious condition of an unroofed space, issues emerge in terms of applicability of the protocols recommended in the ISO standard. This raises the question of whether different room acoustics parameters should be used to characterise open-air ancient theatres.
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Çakir, Onurcan, Zeynep Sevinç, and Mustafa Emre İlal. "Characterization of Noise in Eating Establishments Based on Psychoacoustic Parameters." Applied Mechanics and Materials 887 (January 2019): 539–46. http://dx.doi.org/10.4028/www.scientific.net/amm.887.539.
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Noise in eating establishments has been studied in architectural acoustics literature. For evaluating acoustics in these spaces, researchers predominantly investigate sound pressure levels and reverberation times. Yet, noise in eating spaces originate from a wide variety of sources and is hard to describe and evaluate with only sound pressure levels and reverberation times. Better metrics for acoustics in closed public spaces are needed. Psychoacoustic parameters of loudness, sharpness, fluctuation strength and roughness are promising metrics that have been used by many recent studies evaluating noise annoyance. However, unlike the established metrics such as reverberation time, no set of recommended values exist for these parameters, yet. The aim of this study is to investigate noise in eating establishments through psychoacoustic parameters and understand both the noise characteristics and the metrics themselves. This paper presents a set of sound recordings during lunch hours in two eating spaces in Izmir Institute of Technology. The entry and egress of occupants have been tracked manually, while sound levels have been measured and the noise has been recorded for psychoacoustics analysis. The relationship between the number of occupants and psychoacoustic parameters has been investigated through these objective measurements. The relationship between the number of occupants and sound levels is discussed in the light of the Lombard effect.
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Syamsiyah, Nur Rahmawati, Atyanto Dharoko, Sentagi Sesotya Utami, and Afizah Ayob. "Sustainability Relationship Between Space Configuration, Activity Patterns, and Mosque Acoustics Quality." Journal of Islamic Architecture 7, no. 2 (December 22, 2022): 262–69. http://dx.doi.org/10.18860/jia.v7i2.15121.
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The Great Mosque of Yogyakarta was built in 1773. This mosque has a traditional architectural style. This study investigates the relationship between the mosque's architectural form, the activities inside it, and its acoustic characteristics. It employed quantitative and qualitative methods, including sound pressure level (SPL) measurement, reverberation time, and architectural and activity observations. Acoustic measurements, architectural observations, and activities are conducted inside and outside the mosque from morning to night for one week. The research finding is a spatial continuity pattern identified as the gradation of SPL value. Consistent continuity of SPL values in accordance with the nature of activities hierarchy. The result of this study is to improve mosque noise control by arranging outdoor and indoor spaces in a sustainable manner.
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Đorđević, Zorana, Dragan Novković, and Uroš Andrić. "Archaeoacoustic Examination of Lazarica Church." Acoustics 1, no. 2 (May 17, 2019): 423–38. http://dx.doi.org/10.3390/acoustics1020024.
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The acoustic analysis provides additional information on building tradition and related indoor practice that includes sound, thus deepening our understanding of architectural heritage. In this paper, the sound field of the Orthodox medieval church Lazarica (Kruševac city, Serbia) is examined. Lazarica is a representative of Morava architectural style, developed in the final period of the Serbian medieval state, when also the chanting art thrived, proving the importance of the aural environment in Serbian churches. The church plan is a combination of a traditional inscribed cross and a triconch. After the in situ measurement of acoustic impulse response using EASERA software, we built a computer model in the acoustic simulation software EASE and calibrated it accordingly. Following the parameters (reverberation time (T30), early decay time (EDT) and speech transmission index (STI)), we examined the acoustic effect of the space occupancy, central dome and the iconostasis. In all the cases, no significant deviation between T30 and EDT parameter was observed, which indicates uniform sound energy decay. Closing the dome with a flat ceiling did not show any significant impact on T30, but it lowered speech intelligibility. The height of iconostasis showed no significant influence on the acoustics of Lazarica church.
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Siebein, Gary W., Marylin Roa, Matthew Vetterick, and Jennifer Miller. "Acoustical criteria and design approaches for music education and rehearsal spaces." Journal of the Acoustical Society of America 151, no. 4 (April 2022): A210. http://dx.doi.org/10.1121/10.0011070.
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Case studies of three music education spaces will present acoustical measurement data with architectural features of the rooms compared to criteria from Sabine (1964), Pirn (1978), Gade (1988), Wenger (2008), and Tsaih (2011) among others to assess the sound qualities of the spaces. Among other qualities, reverberation time, room volume, hearing each other, and speech intelligibility are evaluated. Data are also compered to the Norwegian Standard NS 8178-2014. The case studies show how these criteria can be achieved given very different architectural systems employed in the rooms and describe the limits of where the qualities cannot be achieved due to the limits of program, budget, site, or space. Efforts are made to make each surface in the rooms acoustically productive in an optimized design to the extent practicable.
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Kurniasih, Sri. "ANALISIS WAKTU DENGUNG PADA GEDUNG BALAI SARBINI." Jurnal Penelitian dan Karya Ilmiah Arsitektur Usakti 16, no. 02 (December 12, 2018): 82. http://dx.doi.org/10.25105/agora.v16i02.3232.
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<p>Semakin berkembangnya dunia hiburan semakin banyaknya pembangunan gedung-gedung yang membutuhkan sistem akustik salah satunya adalah gedung Balai Sarbini yang berfungsi sebagai gedung pertunjukan. Terkadang perancang hanya memfokuskan pada tampilan fasade bangunannya saja tanpa memperhatikan kenyamanan pengguna bangunan baik dari segi kenyamanan termal, kenyamanan visual maupun kenyamanan suara. Hal inilah yang terkadang menimbulkan permasalahan terutama permasalahan akustik baik permasalahan pada penerima suara maupun permasalahan pada rancangan arsitekturnya. Dengan demikian perlu diketahui tingkat nilai waktu dengung yang terjadi pada gedung Balai Sarbini. Adapun tujuan dari penelitian ini adalah untuk meninjau dan menganalisis sistem akustik baik dari rancangan, penggunaan material maupun perhitungan <em>Reverberation Time</em> (RT) pada bangunan Balai Sarbini yang kemudian disesuaikan dengan tinjauan teori, persyaratan dan standar perhitungan akustik. Metode penelitian yang digunakan adalah deskriptif kuantitatif, berupa uraian yang didapat dari data primer yang ada di lapangan dan teori-teori dasar terkait dari beberapa literatur, yang kemudian melakukan pengukuran dan perhitungan waktu dengung Pertunjukan sebagai objek penelitian dimana hasil pengukuran dan perhitungan tersebut akan disesuaikan dengan standar waktu dengung. Hasil penelitian waktu dengung (RT) kondisi eksisting Gedung Balai Sarbini tanpa bantuan elektro akustik adalah 0,6 detik saat kosong penonton, dan 0,72 detik saat penonton penuh (1000 orang). Dengan demikian dapat dinyatakan bahwa kalkulasi waktu dengung/Reverberation Time (RT) untuk gedung Concert Hall, maka gedung Balai Sarbini kurang/belum memenuhi ketentuan umum.</p><p><em> </em></p><p><strong><em>Kata Kunci:</em></strong><em> </em><em>Akustik, gedung balai Sarbini, waktu dengung</em></p><p> </p><p align="center"><strong><em>ABSTRACT</em></strong></p><p align="center"><strong><em> </em></strong></p><p><em>The development world of entertainment the more the construction of buildings that require an acoustic system one of which is the Hall Sarbini that serves as a performance building. Sometimes the designer only focuses on building façade façade alone regardless of the comfort of the building user in terms of thermal comfort, visual comfort and sound comfort. This is what sometimes causes problems especially acoustic problems both the problems on the recipients of the sound and the problems in the design of the architecture. Thus it is necessary to know the level of the time value of the buzz that occurred at Balai Sarbini building. The purpose of this research is to review and analyze the acoustic system from design, material use and Reverberation Time (RT) calculation on Balai Sarbini Hall building which is then adjusted to theoretical review, requirement and standard of acoustic calculation. The research method used is descriptive quantitative, in the form of description obtained from the primary data in the field and related basic theories from several literatures, which then perform the measurement and calculation of the time drone Performance as the object of research where the results of measurements and calculations will be adjusted with standard time drone. The result of research of the buzzer (RT) condition of existing Balai Sarbini Hall without the aid of acoustic electro is 0,6 second when empty of audience, and 0,72 second when the audience is full (1000 people). Thus it can be stated that the calculation of Reverberation Time (RT) for the Concert Hall building, the Balai Sarbini building has not fulfilled the general requirement.</em></p><p><em> </em></p><p><strong><em>Keywords: </em></strong><em>Acoustics, Hall of Sarbini building, performances, buzzing time</em><em> </em><em></em></p>
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Nowoświat, Artur, and Marcelina Olechowska. "Experimental Validation of the Model of Reverberation Time Prediction in a Room." Buildings 12, no. 3 (March 13, 2022): 347. http://dx.doi.org/10.3390/buildings12030347.
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It is well known that the uncertainty of input data has a great influence on the accuracy of room acoustics simulations. The aforementioned accuracy is significantly influenced by the selection of the acoustic properties of room-delimiting materials. Moreover, simulation errors are attributed to the fact that rooms can be very irregular and sound diffusion can be uneven, and thus sound absorption can be unevenly distributed over the surfaces. Therefore, a very important element is the validation of the simulation model of interior acoustics, even when we use ready-made software dedicated to interior acoustics for the simulation. In the article, the reverberation room model simulated in the ODEON program was subjected to validation. The program is based on a hybrid method combining the ray and virtual source methods. For the validation, appropriate measurements of the reverberation time in that room were carried out. The validation was undertaken using the criterion of correct validation, consisting of comparing the value of the comparison error and the value of the validation uncertainty.
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Zhang, Shuying, and Joonhee Lee. "Diffuseness Quantification in a Reverberation Chamber and Its Variation with Fine-Resolution Measurements." Buildings 11, no. 11 (November 4, 2021): 519. http://dx.doi.org/10.3390/buildings11110519.
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Insufficient diffuseness is the major cause of the poor repeatability and reproducibility of building acoustical measurements in a reverberation chamber. Inaccurate results were reported for the prevailing methods in ISO and ASTM standards. Many previous studies, thus, have proposed new methods to quantify the diffuseness of a reverberation chamber more accurately, but there is no general agreement among researchers on the most reliable method. The number of measurement samples required for these diffuseness metrics is also unclear, even though it significantly impacts the robustness of the methods. This study, therefore, aims to compare the performance of the two widely used diffuseness metrics (spatial variation of sound pressure levels and the relative standard deviation of decay rates) in the standards and the recently introduced metric (degree of time series fluctuation). The measurements were carried out with fine resolution microphone positions and varied configurations of acoustic diffusers. The degree of time series fluctuation showed the best correlation with varying diffuser configurations in the low-frequency range. Confidence intervals and coefficients of variation of the three metrics by random sampling also indicated that DTF is more reliable for evaluating the diffuseness in a sound field as it is less influenced by the number of sampling.
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Chen, Xiang Rong. "Basic Principle of Acoustics and Architectural Suggestions for the Auditorium in Theater." Advanced Materials Research 971-973 (June 2014): 2061–67. http://dx.doi.org/10.4028/www.scientific.net/amr.971-973.2061.
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Many new Grand Theaters are constructed around China in recent years, and it is very important for architect to be familiar with the basic principle and knowledge of acoustics when designing the theaters. RT (Reverberation Time), ITDG (Initial Time Delay Gap), Loudness, BR, Surrounded sense and spatial sense are the major factors that affect the sound quality of the hall. All of them determine the different subjective feeling and quality of sound. According to the causes and requirements of these factors, the basic recommendations are put forward for theater auditorium hall design to ensure good sound effect.
Dissertations / Theses on the topic "Architectural acoustics; Sound – Measurement; Sound – Reverberation"
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Aslan, Gokhan. "Cepstral Deconvolution Method For Measurement Of Absorption And Scattering Coefficients Of Materials." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/3/12608021/index.pdf.
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Several methods are developed to measure absorption and scattering coefficients of materials. In this study, a new method based on cepstral deconvolution technique is proposed. A reverberation room method standardized recently by ISO (ISO 17497-1) is taken as the reference for measurements. Several measurements were conducted in a physically scaled reverberation room and results are evaluated according to these two methods, namely, the method given
in the standard and cepstral deconvolution method. Two methods differ from each other in the estimation of specular parts of room impulse responses essential for determination of scattering coefficients. In the standard method, specular part
is found by synchronous averaging of impulse responses. However, cepstral deconvolution method utilizes cepstral analysis to obtain the specular part instead of averaging. Results obtained by both of these two approaches are compared for five different test materials. Both of the methods gave almost same values for absorption coefficients. On the other hand, lower scattering coefficient values
have been obtained for cepstral deconvolution with respect to the ISO method.
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Polack, Jean-Dominique. "La transmission de l'energie sonore dans les salles." Le Mans, 1988. http://www.theses.fr/1988LEMA1011.
Full textBooks on the topic "Architectural acoustics; Sound – Measurement; Sound – Reverberation"
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Parmanen, Juhani. Study on the possibilities to apply spectrumindex. Espoo [Finland]: Technical Research Centre of Finland, 1992.
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Acoustics: Measurement of sound absorption in a reverberation room. Sydney: Standards Association of Australia, 1988.
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KUTTRUFF, H. Room Acoustics. Taylor & Francis Group, 1991.
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Ando, Yoichi. Opera House Acoustics Based on Subjective Preference Theory. Springer, 2016.
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Opera House Acoustics Based on Subjective Preference Theory. Yoichi Ando, 2015.
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Ando, Yoichi. Opera House Acoustics Based on Subjective Preference Theory. Springer Japan, 2015.
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Tkaczyk, Viktoria, and Stefan Weinzierl. Architectural Acoustics and the Trained Ear in the Arts. Edited by Christian Thorau and Hansjakob Ziemer. Oxford University Press, 2018. http://dx.doi.org/10.1093/oxfordhb/9780190466961.013.14.
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This chapter shifts perspective from the history of architectural acoustics (as a branch of physics) to the history of architecture and practices of listening from around 1780 to 1830. In this period, operas, concerts, and spoken theater pieces, traditionally performed in the same venue, were increasingly regarded as separate genres, each related to a specific sonic reverberation time. As this chapter illustrates using acoustic data from major venues, this separation corresponded with ever-diverging concepts of acoustic design and the acoustic properties of new buildings. The shift occurred, first, because of the emergence of a bourgeois theater and music culture and, second, due to a fundamental epistemic shift in acoustic theory when sound reflection began to be thought of as a phenomenon related to energy, time, and building materials. The audience was conceived of as a group of genre-specific listening experts who paid attention to sound dying away over time.
Book chapters on the topic "Architectural acoustics; Sound – Measurement; Sound – Reverberation"
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BONSI, DAVIDE. "The Acoustic Analysis of Palladio’s Teatro Olimpico, Vicenza." In The Music Room in Early Modern France and Italy. British Academy, 2012. http://dx.doi.org/10.5871/bacad/9780197265055.003.0017.
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In the history of theatre buildings, the Teatro Olimpico in Vicenza by Andrea Palladio is often regarded as the archetype of the evolution of spaces for drama and music in modern European culture. Even within the specific subject of architectural acoustics, the Olympic Theatre represents a sort of symbolic beginning of a new era, since the main idea which led to its realisation, that is, the transformation of the Greco-Roman theatre into a closed volume, started to pose problems that had previously been unknown or neglected due to the completely different sound-propagation processes experienced in the open-air theatres of antiquity. This chapter focuses on the recent campaign of acoustic measurements carried out by the author in the Teatro Olimpico. Among the results discussed are the long reverberation time and low clarity, which make the hall more suitable for music than speech.
Conference papers on the topic "Architectural acoustics; Sound – Measurement; Sound – Reverberation"
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Dougherty, Robert P., William D’Andrea Fonseca, and Samir N. Y. Gerges. "Beamforming in Reflecting Environments: An Experiment in a Reverberation Chamber." In ASME 2008 Noise Control and Acoustics Division Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/ncad2008-73020.
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Beamforming in reverberant environments is important to locate and quantify noise sources in turbofan engine nacelles, automobile interiors, factories, and architectural settings. In order to validate and explore the limits of this approach, a beamforming experiment was conducted in a reverberation chamber using a 32 channel planar phased array and a B&K sound power source. In the reference configuration, the source was located 2 m from the 1.1 m diameter array, and neither was close to the chamber walls. A less-demanding case was constructed by adding some foam absorber to the room to reduce reverberation. A difficult case resulted when the source was placed 5 m from the array, about 1 m from a corner of the chamber. Conventional frequency-domain beamforming with diagonal deletion was applied. The sound source was accurately located at the 2 m distance, with and without the added absorber. In the 5 m case, the sound source could be located at only a few frequencies and only when the processing bandwidth was increased from 48.8 Hz to 781 Hz. Processing individual eigenvectors of the CSM separated the direct and reflected source in 5 m case. The error in the deduced broadband sound power was 0.72 dB in the baseline case, 1.47 dB with the added absorber, and 5.41 dB with the speaker in the corner. Application of CLEAN-SC did not improve the accuracy of the corner results. Use of a Green’s function that attempts to account for reflections was ineffective. It is concluded that beamforming in highly reverberant environment with the free space Green’s function is practical, provided the array is designed and positioned correctly for the environment and source location.
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Hastings, Mardi C., and Richard D. Godfrey. "Reverberation Room Survey and Qualification According to ASTM C 423." In ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-1032.
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Abstract Results of an experimental performance qualification of a large reverberation room in the Noise and Vibration Control Laboratory at Owens-Corning Science & Technology Center, Granville, Ohio, are reported. The qualification testing was done according to ASTM C 423 – 90a and a proposed revision of ASTM C 423 being developed by Task Group E–33.01–D of ASTM Committee E–33 on Environmental Acoustics. The proposed revision puts requirements on spatial uncertainties in the reverberant field in addition to the uncertainty in the total number of decay rate measurements. Results of the performance qualification show that this room meets or exceeds requirements for a reverberation chamber for measurement of sound absorption and sound absorption coefficients in the 100 to 5000 Hz third-octave bands.