Improvement of acoustic conditions for speech communication in classrooms

✍ Scribed by E. Sala; V. Viljanen

• Book ID: 102988213
• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 699 KB
• Volume: 45
• Category: Article
• ISSN: 0003-682X
• DOI: 10.1016/0003-682x(94)00035-t

✦ Synopsis

A classroom's acoustic design should be constructed so that the highest possible degree of speech intelligibility is achieved for teachers and pupils. Yet classrooms are a noisy and a reverberant environment for speech communication. The aim of this study was to find out the acceptable acoustic conditions for speech intelligibility measured with the RASTI method, using a minimum amount and the proper placement of mineral wool in a quiet test classroom. To reach an excellent acoustic environment where the mean RASTI value was 0.75 or higher, it is necessary to use mineral wool at least at an area of 30% of the maximum absorption area of the room and to place it on two surfaces.