✦ LIBER ✦

The effect of ambient noise on speech intelligibility in classrooms

✍ Scribed by T. Houtgast

Publisher: Elsevier Science
Year: 1981
Tongue: English
Weight: 519 KB
Volume: 14
Category: Article
ISSN: 0003-682X
DOI: 10.1016/0003-682x(81)90040-2

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✦ Synopsis

Intelligibility tests were performed by teachers and pupils in classrooms under a variety of (road traffic) noise conditions. The intelligibility scores are found to deteriorate at (indoor) noise levels exceeding a critical value of -15 dB with regard to a teacher's long-term (reverberant) speech level. The implications for external noise levels are discussed: typically, an external noise level of 50 dB( A ) would imply that the critical indoor level is exceeded for about 20 per cent of teachers.

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