کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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753666 | 895564 | 2010 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Verbal communication and noise in eating establishments Verbal communication and noise in eating establishments](/preview/png/753666.png)
A new simple prediction model has been derived for the average A-weighted noise level due to many people speaking in a room with assumed diffuse sound field. Due to the feed-back influence of noise on the speech level (the Lombard effect), the speech level increases in noisy environments, and the suggested prediction model gives a 6 dB reduction of the noise level by doubling the equivalent absorption area of the room. This is in contrast to the lowering by 3 dB by doubling of the absorption area for a constant power sound source. The prediction model is verified by experimental data found in the literature. In order to achieve acceptable conditions for speech communication within a small group of people, a guide for the recommended minimum absorption area per person in eating establishments is provided.
Journal: Applied Acoustics - Volume 71, Issue 12, December 2010, Pages 1156–1161