Comparisons of computer simulations of acoustical conditions in classrooms

Authors

  • Sylvio R. Bistafa Natl Research Council, Ottawa, Canada
  • John S. Bradley Natl Research Council, Ottawa, Canada

Keywords:

Acoustic wave absorption, Architectural acoustics, Computer simulation, Computer software, Interiors (building), Natural frequencies, Reverberation, Sound insulating materials, Speech intelligibility, Reverberation time, Software package Odeon, Software package Raynoise

Abstract

Two computer programs were used to compare the computer simulations of acoustical conditions in classrooms. Odeon 2.6 and Raynoise 2.1 A use hybrid models in that they combine different procedures for calculating the earlier and later parts of the impulse response. The classroom had dimensions of 7.6 m×10 m and 3.3 m height. Four different sound absorption material configurations, using mineral wool, were simulated to study the relation between reverberation and speech intelligibility. The simulations showed that the speech intelligibility metrics have been consistently estimated using two different room acoustic programs. The prediction of reverberation time deviate from expected values at high frequencies for a very reverberant room.

Published

1998-09-01

How to Cite

1.
Bistafa SR, Bradley JS. Comparisons of computer simulations of acoustical conditions in classrooms. Canadian Acoustics [Internet]. 1998Sep.1 [cited 2021Apr.22];26(3):21-2. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1137

Issue

Section

Proceedings of the Acoustics Week in Canada

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