An important issue in building acoustics is the significant variability in laboratory test results that numerous round robin tests have indicated. The current wish to include the frequency bands 50-80 Hz in the procedures to determine single-number quantities has prompted new discussions. In this paper, wave based models are used to numerically investigate the fundamental repeatability and reproducibility. Regarding sound insulation measurements, both the pressure method (ISO 10140-2) and the intensity method (ISO 15186-1 and ISO 15186-3) are investigated in the frequency range 50-200 Hz. Flanking transmission measurements (ISO 10848) are also studied in a broad frequency range. The investigation includes the repeatability of the different measurement procedures, which depends on the influence of the source and receiver positions. The reproducibility in different test facilities is studied by looking at the influence of geometrical parameters like room and plate dimensions, aperture placement and aperture...
{"title":"The repeatability and reproducibility of laboratory building acoustic measurements: Numerical study","authors":"A. Dijckmans, L. D. Geetere, B. Ingelaere","doi":"10.1121/2.0000530","DOIUrl":"https://doi.org/10.1121/2.0000530","url":null,"abstract":"An important issue in building acoustics is the significant variability in laboratory test results that numerous round robin tests have indicated. The current wish to include the frequency bands 50-80 Hz in the procedures to determine single-number quantities has prompted new discussions. In this paper, wave based models are used to numerically investigate the fundamental repeatability and reproducibility. Regarding sound insulation measurements, both the pressure method (ISO 10140-2) and the intensity method (ISO 15186-1 and ISO 15186-3) are investigated in the frequency range 50-200 Hz. Flanking transmission measurements (ISO 10848) are also studied in a broad frequency range. The investigation includes the repeatability of the different measurement procedures, which depends on the influence of the source and receiver positions. The reproducibility in different test facilities is studied by looking at the influence of geometrical parameters like room and plate dimensions, aperture placement and aperture...","PeriodicalId":20469,"journal":{"name":"Proc. Meet. Acoust.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84074832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In psychophysical experiments, cochlear compression can be derived by the comparison of on- and low-frequency masking, assuming that in the signal representation, the responses to both the signal and on-frequency masker are equally compressed while the response to the low-frequency masker is not compressed. In the present study, this approach was used to assess the influence of compression on the discrimination of complex signal spectra. The signals were rippled noise, 0.38-oct wide, centered at 2 kHz, 40 to 90 dB SPL. The ripple-density discrimination limit was measured using the ripple-phase reversal test. The simultaneous maskers were 0.5-oct wide noise centered either at the signal frequency (on-frequency) or 0.75-oct below the signal (low-frequency). Increase in the masker level resulted in a decrease in the ripple-density resolution limit. The growth of the on-frequency masker was approximately 1:1. The growth of the low-frequency masker revealed no compression at signal levels from 40 to 50 dB, and...
在心理物理实验中，耳蜗压缩可以通过对高频掩蔽和低频掩蔽的比较得到，假设在信号表示中，对信号和低频掩蔽的响应都被同等压缩，而对低频掩蔽的响应不被压缩。在本研究中，该方法被用于评估压缩对复杂信号频谱识别的影响。信号为波纹噪声，宽0.38 oct，中心为2 kHz, 40至90 dB SPL。用纹波相位反转试验测定了纹波密度判别限。同时的掩模是0.5 oct宽的噪声，中心在信号频率(on-frequency)或信号下方0.75 oct (low-frequency)。掩膜水平的增加导致纹波密度分辨率极限的降低。频率掩模的生长约为1:1。低频掩模的生长表明，在40 ~ 50 dB的信号电平范围内，低频掩模没有被压缩。
{"title":"Rippled spectrum discrimination in noise: Effects of compression","authors":"O. Milekhina, D. Nechaev, V. Popov, A. Supin","doi":"10.1121/2.0000527","DOIUrl":"https://doi.org/10.1121/2.0000527","url":null,"abstract":"In psychophysical experiments, cochlear compression can be derived by the comparison of on- and low-frequency masking, assuming that in the signal representation, the responses to both the signal and on-frequency masker are equally compressed while the response to the low-frequency masker is not compressed. In the present study, this approach was used to assess the influence of compression on the discrimination of complex signal spectra. The signals were rippled noise, 0.38-oct wide, centered at 2 kHz, 40 to 90 dB SPL. The ripple-density discrimination limit was measured using the ripple-phase reversal test. The simultaneous maskers were 0.5-oct wide noise centered either at the signal frequency (on-frequency) or 0.75-oct below the signal (low-frequency). Increase in the masker level resulted in a decrease in the ripple-density resolution limit. The growth of the on-frequency masker was approximately 1:1. The growth of the low-frequency masker revealed no compression at signal levels from 40 to 50 dB, and...","PeriodicalId":20469,"journal":{"name":"Proc. Meet. Acoust.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84735693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The multi-axis simulators are designed for experimental verification of the safe functioning of large components and subsystems under real world customer usage in vibration and durability testing. Transformation of the full vehicle conditions to mast rig testing with correct system dynamics and vibration characteristics and boundary conditions is a key challenge in the development of the experimental set-up. In this paper, a systematic methodology is formalized how to design the experimental set-up on MAST rig to replicate the vehicle dynamics and vibration characteristics in vehicle conditions. System modes and frequency response functions are chosen as key performance metrics to compare the dynamics of the system to be tested for both full vehicle and rig design. Criteria on the metrics are defined to make decision if the test rig design is sufficiently replicating the in-vehicle conditions. The methodology is illustrated on a side skirt attached to a heavy duty truck chassis that demonstrates the appli...
{"title":"A methodology to design multi-axis test rigs for vibration and durability testing using frequency response functions","authors":"P. Şendur, Umut Ozcan, Berk Ozoguz","doi":"10.1121/2.0000526","DOIUrl":"https://doi.org/10.1121/2.0000526","url":null,"abstract":"The multi-axis simulators are designed for experimental verification of the safe functioning of large components and subsystems under real world customer usage in vibration and durability testing. Transformation of the full vehicle conditions to mast rig testing with correct system dynamics and vibration characteristics and boundary conditions is a key challenge in the development of the experimental set-up. In this paper, a systematic methodology is formalized how to design the experimental set-up on MAST rig to replicate the vehicle dynamics and vibration characteristics in vehicle conditions. System modes and frequency response functions are chosen as key performance metrics to compare the dynamics of the system to be tested for both full vehicle and rig design. Criteria on the metrics are defined to make decision if the test rig design is sufficiently replicating the in-vehicle conditions. The methodology is illustrated on a side skirt attached to a heavy duty truck chassis that demonstrates the appli...","PeriodicalId":20469,"journal":{"name":"Proc. Meet. Acoust.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84670676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
While scientists and philosophers have been interested in sound source localization since the time of the ancient Greeks, the modern study of this topic probably began in the late 19th century. Because sound has no spatial dimensions, there were many arguments at this time as to how humans localize a source based on the sound it produces. Lord Rayleigh conducted a “garden experiment” and concluded that a binaural ratio of sound level at each ear could account for his ability to identify the location of people who spoke in the garden. This type of experiment began the modern investigation of the acoustic cues used for sound source localization. In the first half of the 20th century, psychoacousticians such as Licklider, Jeffress, Mills, Newman, Rosenzweig, Stevens, von Hornbostel, Wallach, Wertheimer, and many others (documented by Boring in Sensation and Perception, 1942 and by Blauert in Spatial Hearing, 1997) added seminal papers leading to our current understanding of sound source localization. This pr...
虽然科学家和哲学家自古希腊时代就对声源定位感兴趣，但对这一主题的现代研究可能始于19世纪后期。因为声音没有空间维度，所以当时有很多关于人类如何根据声音来定位音源的争论。瑞利勋爵进行了一次“花园实验”，并得出结论:两只耳朵的声级比可以解释他识别在花园里说话的人的位置的能力。这种类型的实验开始了用于声源定位的声学线索的现代研究。在20世纪上半叶，心理声学家如Licklider, Jeffress, Mills, Newman, Rosenzweig, Stevens, von Hornbostel, Wallach, Wertheimer和许多其他人(由Boring在1942年的感觉和知觉中记录，由Blauert在1997年的空间听力中记录)增加了开创性的论文，导致我们目前对声源定位的理解。这公关…
{"title":"History of sound source localization: 1850-1950","authors":"W. Yost","doi":"10.1121/2.0000529","DOIUrl":"https://doi.org/10.1121/2.0000529","url":null,"abstract":"While scientists and philosophers have been interested in sound source localization since the time of the ancient Greeks, the modern study of this topic probably began in the late 19th century. Because sound has no spatial dimensions, there were many arguments at this time as to how humans localize a source based on the sound it produces. Lord Rayleigh conducted a “garden experiment” and concluded that a binaural ratio of sound level at each ear could account for his ability to identify the location of people who spoke in the garden. This type of experiment began the modern investigation of the acoustic cues used for sound source localization. In the first half of the 20th century, psychoacousticians such as Licklider, Jeffress, Mills, Newman, Rosenzweig, Stevens, von Hornbostel, Wallach, Wertheimer, and many others (documented by Boring in Sensation and Perception, 1942 and by Blauert in Spatial Hearing, 1997) added seminal papers leading to our current understanding of sound source localization. This pr...","PeriodicalId":20469,"journal":{"name":"Proc. Meet. Acoust.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88936669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A method to synthesize the sound radiation characteristics of musical instruments in a wave field synthesis (WFS) system is proposed and tested. Radiation patterns of a violin are measured with a circular microphone array which consists of 128 pressure receivers. For each critical frequency band one exemplary radiation pattern is decomposed to circular harmonics of order 0 to 64. So the radiation characteristic of the violin is represented by 25 complex radiation patterns. On the reproduction side, these circular harmonics are approximated by 128 densely spaced monopoles by means of 128 broadband impulses. An anechoic violin recording is convolved with these impulses, yielding 128 filtered versions of the recording. These are then synthesized as 128 monopole sources in a WFS system and compared to a virtual monopole playing the unfiltered recording. The study participants perceive the tone color of the recreated virtual violin as being dependent on the listening position and report that the two source typ...
{"title":"Perceptual evaluation of violin radiation characteristics in a wave field synthesis system","authors":"Leonie Böhlke, Tim Ziemer","doi":"10.1121/2.0000524","DOIUrl":"https://doi.org/10.1121/2.0000524","url":null,"abstract":"A method to synthesize the sound radiation characteristics of musical instruments in a wave field synthesis (WFS) system is proposed and tested. Radiation patterns of a violin are measured with a circular microphone array which consists of 128 pressure receivers. For each critical frequency band one exemplary radiation pattern is decomposed to circular harmonics of order 0 to 64. So the radiation characteristic of the violin is represented by 25 complex radiation patterns. On the reproduction side, these circular harmonics are approximated by 128 densely spaced monopoles by means of 128 broadband impulses. An anechoic violin recording is convolved with these impulses, yielding 128 filtered versions of the recording. These are then synthesized as 128 monopole sources in a WFS system and compared to a virtual monopole playing the unfiltered recording. The study participants perceive the tone color of the recreated virtual violin as being dependent on the listening position and report that the two source typ...","PeriodicalId":20469,"journal":{"name":"Proc. Meet. Acoust.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72640589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Many species-typical audiograms for marine mammals are based on data from only one or a few individuals that are not always tested under ideal conditions. Here, we report auditory thresholds across the frequency range of hearing for a healthy, five-year-old female California sea lion identified as Ronan. Ronan was trained to enter a hemi-anechoic acoustic chamber to perform a go/no-go audiometric experiment. Auditory sensitivity was measured first by an adaptive staircase procedure and then by the method of constant stimuli. Minimum audible field measurements were obtained for 500 ms frequency-modulated tonal upsweeps with 10% bandwidth and 5% rise and fall times. Thresholds were measured at 13 frequencies: in one-octave frequency steps from 0.1 to 25.6 kHz, and additionally at 18.0, 22.0, 36.2, and 40.0 kHz. Sensitivity was greatest between 1 and 23 kHz, with best hearing of 0 dB re 20 µPa at 12.8 kHz. Hearing range, determined at the 60 dB re 20 µPa level, extended from approximately 0.2 kHz to 38 kHz. ...
海洋哺乳动物的许多物种典型听力图仅基于一个或几个个体的数据，这些数据并不总是在理想条件下进行测试。在这里，我们报告了一只健康的，五岁的雌性加利福尼亚海狮的听觉阈值，被确定为罗南。罗南被训练进入一个半消声室，进行一个去/不去的听力学实验。听觉敏感度首先用自适应阶梯法测量，然后用恒刺激法测量。在带宽为10%，上升和下降时间为5%的情况下，获得了500 ms频率调制音调上扫的最小可听场测量值。阈值在13个频率上测量:在0.1到25.6 kHz的一个倍频频率步长，另外在18.0、22.0、36.2和40.0 kHz。灵敏度在1 ~ 23 kHz之间最高，在12.8 kHz时的最佳听力为0 dB re 20µPa。听力范围，在60分贝和20µPa水平下确定，从大约0.2 kHz扩展到38 kHz. ...
{"title":"Psychophysical audiogram of a California sea lion listening for airborne tonal sounds in an acoustic chamber","authors":"C. Reichmuth, Jillian M. Sills, Asila Ghoul","doi":"10.1121/2.0000525","DOIUrl":"https://doi.org/10.1121/2.0000525","url":null,"abstract":"Many species-typical audiograms for marine mammals are based on data from only one or a few individuals that are not always tested under ideal conditions. Here, we report auditory thresholds across the frequency range of hearing for a healthy, five-year-old female California sea lion identified as Ronan. Ronan was trained to enter a hemi-anechoic acoustic chamber to perform a go/no-go audiometric experiment. Auditory sensitivity was measured first by an adaptive staircase procedure and then by the method of constant stimuli. Minimum audible field measurements were obtained for 500 ms frequency-modulated tonal upsweeps with 10% bandwidth and 5% rise and fall times. Thresholds were measured at 13 frequencies: in one-octave frequency steps from 0.1 to 25.6 kHz, and additionally at 18.0, 22.0, 36.2, and 40.0 kHz. Sensitivity was greatest between 1 and 23 kHz, with best hearing of 0 dB re 20 µPa at 12.8 kHz. Hearing range, determined at the 60 dB re 20 µPa level, extended from approximately 0.2 kHz to 38 kHz. ...","PeriodicalId":20469,"journal":{"name":"Proc. Meet. Acoust.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90194442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In an advanced acoustics laboratory course at Brigham Young University, students are introduced to ANSI measurement standards in the context of sound power. They are introduced to the anatomy of a typical acoustics standard and then plan and carry out sound power measurements of an electric leaf blower using both reverberation chamber and sound intensity methods. The students are required to write a technical memorandum describing a) the blower’s radiated sound power levels over an appropriate frequency range, as obtained with the two methods; b) setup documentation and deviations from the standards’ recommended practices; and c) how any deviations might have contributed to discrepancies between the sound power levels obtained with the two methods. In this paper, a description of the experience is given, along with overall impressions and plans for future improvements.
{"title":"Incorporating measurement standards for sound power in an advanced acoustics laboratory course","authors":"K. Gee","doi":"10.1121/2.0000523","DOIUrl":"https://doi.org/10.1121/2.0000523","url":null,"abstract":"In an advanced acoustics laboratory course at Brigham Young University, students are introduced to ANSI measurement standards in the context of sound power. They are introduced to the anatomy of a typical acoustics standard and then plan and carry out sound power measurements of an electric leaf blower using both reverberation chamber and sound intensity methods. The students are required to write a technical memorandum describing a) the blower’s radiated sound power levels over an appropriate frequency range, as obtained with the two methods; b) setup documentation and deviations from the standards’ recommended practices; and c) how any deviations might have contributed to discrepancies between the sound power levels obtained with the two methods. In this paper, a description of the experience is given, along with overall impressions and plans for future improvements.","PeriodicalId":20469,"journal":{"name":"Proc. Meet. Acoust.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83378269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
D. Urbán, N. Roozen, P. Zat'ko, M. Rychtáriková, Peter Tomasovic, C. Glorieux
This publication presents results of research on naturally ventilated Double Transparent Facades (DTF). The influence of the structural design of DTFs on the airborne sound insulation was investigated. For this purpose, 9 DTFs were measured in situ and 9 Double Transparent Facade Elements (DTF) were measured in a laboratory environment. The influence of the cavity thickness, the parallelism of the constitution layers, the amount of absorbing surfaces in the cavity, and the effect of ventilation slots were investigated. Based on the performed measurements, a prediction model that allows a fast engineering calculation of the sound insulation of DTF’s was developed.
{"title":"Acoustics of naturally ventilated double transparent facades","authors":"D. Urbán, N. Roozen, P. Zat'ko, M. Rychtáriková, Peter Tomasovic, C. Glorieux","doi":"10.1121/2.0000538","DOIUrl":"https://doi.org/10.1121/2.0000538","url":null,"abstract":"This publication presents results of research on naturally ventilated Double Transparent Facades (DTF). The influence of the structural design of DTFs on the airborne sound insulation was investigated. For this purpose, 9 DTFs were measured in situ and 9 Double Transparent Facade Elements (DTF) were measured in a laboratory environment. The influence of the cavity thickness, the parallelism of the constitution layers, the amount of absorbing surfaces in the cavity, and the effect of ventilation slots were investigated. Based on the performed measurements, a prediction model that allows a fast engineering calculation of the sound insulation of DTF’s was developed.","PeriodicalId":20469,"journal":{"name":"Proc. Meet. Acoust.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82451362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The United States and European Union (EU) guarantee people with disabilities certain rights, with goals of full enjoyment, active inclusion, and equal participation in society. This approach is also found in the United Nations Convention on the Rights of Persons with Disabilities, adopted by EU. Noise is a disability rights issue for individuals with hearing loss. Many cannot understand speech in noisy places, with or without hearing aids. Ambient noise levels below 60 A-weighted decibels with a reverberation time under 0.50 seconds are needed to allow those with partial hearing loss to follow normal conversations. Noise worsens symptoms for those with tinnitus and hyperacusis. Noisy restaurants, stores, and other places deny full enjoyment and equal participation in public life to those with hearing loss, tinnitus, and hyperacusis. Legislative and regulatory action is needed to provide quiet environments, with established noise standards vigorously enforced. Technologies and environmental modifications t...
{"title":"Disability rights aspects of ambient noise for people with auditory disorders under the Americans with Disabilities Act","authors":"Daniel Fink","doi":"10.1121/2.0000657","DOIUrl":"https://doi.org/10.1121/2.0000657","url":null,"abstract":"The United States and European Union (EU) guarantee people with disabilities certain rights, with goals of full enjoyment, active inclusion, and equal participation in society. This approach is also found in the United Nations Convention on the Rights of Persons with Disabilities, adopted by EU. Noise is a disability rights issue for individuals with hearing loss. Many cannot understand speech in noisy places, with or without hearing aids. Ambient noise levels below 60 A-weighted decibels with a reverberation time under 0.50 seconds are needed to allow those with partial hearing loss to follow normal conversations. Noise worsens symptoms for those with tinnitus and hyperacusis. Noisy restaurants, stores, and other places deny full enjoyment and equal participation in public life to those with hearing loss, tinnitus, and hyperacusis. Legislative and regulatory action is needed to provide quiet environments, with established noise standards vigorously enforced. Technologies and environmental modifications t...","PeriodicalId":20469,"journal":{"name":"Proc. Meet. Acoust.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78091411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Rychtáriková, D. Urbán, Magdalena Kassakova, C. Maywald, C. Glorieux
Large halls, such as shopping malls, atria or big entrance halls often suffer from various acoustic discomfort issues, which are not necessarily caused by extremely high noise levels. Due to the large size of halls and consequently the long trajectories that sound waves travel between the source, interior surfaces and the receiver, sound reflections arriving from surrounding surfaces are not as strong as they would be in smaller rooms. Reports in literature and comments by users of large halls concerning acoustic discomfort in large halls, refer mainly to continuous reverberation related noise. Therefore, quantification of the acoustic comfort by the reverberation time, which is related to the average absorption of interior surfaces and by the equivalent sound pressure level, which in a large space is dominated by direct sound, is not adequate to describe the global acoustic comfort or soundscape. Based on statistical noise analysis on auralized soudscapes, this article proposes a set of measurable monaur...
{"title":"Perception of acoustic comfort in large halls covered by transparent structural skins","authors":"M. Rychtáriková, D. Urbán, Magdalena Kassakova, C. Maywald, C. Glorieux","doi":"10.1121/2.0000540","DOIUrl":"https://doi.org/10.1121/2.0000540","url":null,"abstract":"Large halls, such as shopping malls, atria or big entrance halls often suffer from various acoustic discomfort issues, which are not necessarily caused by extremely high noise levels. Due to the large size of halls and consequently the long trajectories that sound waves travel between the source, interior surfaces and the receiver, sound reflections arriving from surrounding surfaces are not as strong as they would be in smaller rooms. Reports in literature and comments by users of large halls concerning acoustic discomfort in large halls, refer mainly to continuous reverberation related noise. Therefore, quantification of the acoustic comfort by the reverberation time, which is related to the average absorption of interior surfaces and by the equivalent sound pressure level, which in a large space is dominated by direct sound, is not adequate to describe the global acoustic comfort or soundscape. Based on statistical noise analysis on auralized soudscapes, this article proposes a set of measurable monaur...","PeriodicalId":20469,"journal":{"name":"Proc. Meet. Acoust.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82337020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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