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MAGALHÃES, M. D. C. Low frequency airborne sound transmission in building. In: ENCONTRO NACIONAL SOBRE CONFORTO NO AMBIENTE CONSTRUÍDO, 8., ENCONTRO LATINO-AMERICANO SOBRE CONFORTO NO AMBIENTE CONSTRUÍDO, 4., 2005, Maceió. Anais… Maceió: ANTAC, 2005. p. 1101-1106.
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Resumo

The aims of this paper are to provide further background description and present and implement a modal approach, the latter assisting in providing improved understanding of the noise transmission phenomenon in buildings. The derivation and numerical examples presented in this paper show how transmission efficiency is affected by room geometry. The transmission of sound between similar or dissimilar rooms, e.g. for the latter consider rooms attached to corridors, can equally be predicted using the Modal approach. The narrowband results of analyses were converted to one-third octave band spectra, to make comparisons with other data possible. Finally, a general discussion, based on the findings of the results obtained, is presented with some observations concerning potential improvements that can be considered.

Abstract

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