Design guidelines for interior acoustics in learning spaces included in European and American technical standards and other documents are presented. The current Polish regulations referring to interior acoustics are described. The proposal of a set of acoustical guidelines for improving acoustical comfort in school spaces is given.
A number of objective ana subjective acoustical parameters, referring to the reverberance, and spatial distribution of sound and speech intelligibility, were measured before and after the acoustical adaptation of a classroom. Three configurations of arrangements differing in used materials' sound absorbing coefficient were analyzed. The results indicate the expected improvement of the acoustical environment according to design assumptions.
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