Objective and subjective acoustics measurement of audience seating areas in a medium size auditorium

Sari, L. F.; Utami, Sentagi Sesotya; Sarwono, Joko

doi:10.1088/1742-6596/1075/1/012015

Cited by 2 publications

(3 citation statements)

References 6 publications

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“…In room No. 2, the situation noticeably improves at points 1 and 2, but at the rest points of the room, the EDT values do not meet the requirements of the DIN 18041:2004-05 standard [17]. In room No.…”

Section: Dependence Of Scores Of Parameters Of Binaural Room Impulse Response On the Location Of A Listenermentioning

confidence: 93%

“…The variety of shapes and decoration of university lecture rooms is greater than that of school classes but less than that of concert halls. For example, in [17], the middle-sized lecture rooms include a room with a Insufficient attention was paid to quantifying the impact of reflecting surfaces on speech intelligibility. The known results indicate the lack of systemic search in this direction.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…Given the lack of research in the acoustics of university lecture rooms, the increased interest of scientists in this problem seems understandable, which contributed to the development of useful recommendations for practical application. Thus, instead of the cumbersome and expensive hardware and software system of articulation tests described in paper [3] and developed in paper [7], the stimulus signals began to be synthesized more often by convolution of a clear signal and binaural room impulse response (BRIR) [17]. This approach has been greatly facilitated by the development of BRIR bank-building technology [24], as well as using special mathematical methods [25] when assessing the impulse responses of the premises [26].…”

Section: Introductionmentioning

confidence: 99%

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Assessment of speech intelligibility in university lecture rooms of different sizes using objective and subjective methods

Prodeus

Didkovska

2021

EEJET

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The scores of speech intelligibility, obtained using objective and subjective methods for three university lecture rooms of the small, medium, and large sizes with different degrees of filling, were presented. The problem of achieving high speech intelligibility is relevant for both students and university administration, and for architects designing or reconstructing lecture rooms. Speech intelligibility was assessed using binaural room impulse responses which applied an artificial head and non-professional quality audio equipment for measuring. The Speech Transmission Index was an objective measure of speech intelligibility, while the subjective evaluation of speech intelligibility was carried out using the articulation method. Comparative analysis of the effectiveness of parameters of impulse response as a measure of speech intelligibility showed that Early Decay Time exceeded the score of the T30 reverberation time but was ineffective in a small lecture room. The C50 clarity index for all the considered lecture rooms was the most informative. Several patterns determined by the influence of early sound reflections on speech intelligibility were detected. Specifically, it was shown that an increase in the ratio of the energy of early reflections to the energy of direct sound leads to a decrease in speech intelligibility. The exceptions are small, up to 30‒40 cm, distances from the back wall of the room, where speech intelligibility is usually slightly higher than in the middle of the room. At a distance of 0.7–1.7 m from the side walls of the room, speech intelligibility is usually worse for the ear, which is closer to the wall. The usefulness of the obtained results lies in refining the quantitative characteristics of the influence of early reflections of sound on speech intelligibility at different points of lecture rooms.

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Section: Dependence Of Scores Of Parameters Of Binaural Room Impulse Response On the Location Of A Listenermentioning

confidence: 93%

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Assessment of speech intelligibility in university lecture rooms of different sizes using objective and subjective methods

Prodeus

Didkovska

2021

EEJET

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A hybrid room acoustic modeling approach combining image source, acoustic diffusion equation, and time-domain discontinuous Galerkin methods

Wittebol,

Wang,

Hornikx

et al. 2024

Applied Acoustics

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Objective and subjective acoustics measurement of audience seating areas in a medium size auditorium

Cited by 2 publications

References 6 publications

Assessment of speech intelligibility in university lecture rooms of different sizes using objective and subjective methods

Assessment of speech intelligibility in university lecture rooms of different sizes using objective and subjective methods

A hybrid room acoustic modeling approach combining image source, acoustic diffusion equation, and time-domain discontinuous Galerkin methods

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