A new look at acoustical criteria for classrooms

This paper reports the results of new derivations of acoustical criteria from recently published classroom acoustics research studies and compares the new results with existing standards. The results of speech tests in classrooms were used to derive maximum acceptable values of ambient noise in classrooms for children of various ages. Similarly, optimum ranges of reverberation times were determined to maximize signal-to-noise ratios without excessive reverberation.Ce document fait \ue9tat des r\ue9sultats de nouvelles d\ue9rivations de crit\ue8res acoustiques issues d?\ue9tudes techniques portant sur l?acoustique des salles de classe r\ue9cemment publi\ue9es et compare les nouveaux r\ue9sultats aux normes existantes. On a utilis\ue9 les r\ue9sultats d?essais de la parole dans des salles de classe pour d\ue9river des valeurs acceptables maximales de bruit ambiant dans les salles pour des enfants d?\ue2ges vari\ue9s. Dans le m\ueame ordre d?id\ue9es, des plages optimales de temps de r\ue9verb\ue9ration ont \ue9t\ue9 \ue9tablies afin de maximaliser les rapports signal/bruit sans r\ue9verb\ue9ration excessive.Peer reviewed: YesNRC publication: Ye