Plomp R, Duquesnoy A J
J Acoust Soc Am. 1980 Dec;68(6):1616-21. doi: 10.1121/1.385216.
This article deals with the combined effects of noise and reverberation on the speech-reception threshold for sentences. It is based on a series of current investigations on: (1) the modulation-transfer function as a measure of speech intelligibility in rooms, (2) the applicability of this concept to hearing-impaired persons, and (3) hearing loss for speech in quiet and in noise as a function of age. It is shown that, generally, in auditoria, classrooms, etc. the reverberation time T, acceptable for normal-hearing listeners, has to be reduced to (0.75)DT in order to be acceptable for elderly subjects with a hearing loss of D dB for speech in noise; for listening conditions as in lounges, restaurants, etc. the corresponding value is (0.82)DT.
本文探讨了噪声和混响对句子言语接受阈的综合影响。它基于一系列当前的研究：（1）调制传递函数作为衡量室内言语可懂度的指标；（2）这一概念对听力受损者的适用性；（3）安静和噪声环境下言语听力损失随年龄的变化。结果表明，一般来说，在礼堂、教室等场所，对于听力正常的听众可接受的混响时间T，对于在噪声环境中言语听力损失为D dB的老年人来说，必须降低到（0.75）DT才能接受；对于休息室、餐厅等聆听环境，相应的值为（0.82）DT。
