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Absorption corrections for transmission loss measurements

From National Research Council Canada

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Affiliation
  1. National Research Council of Canada. NRC Institute for Research in Construction
FormatText, Article
Subjectsound transmission loss; sound absorption; sound resistant partitions; room acoustics; sound transmission loss measurement; various methods; room absorption effects; conventional decay method; known power sound source method; near-rad method; Sound transmission & insulation; perte de transmission sonore; absorption acoustique; cloison insorisée; acoustique des salles
Abstract
Measurements of sound transmission loss made using nine different methods to estimate the effects of room absorption are reported. A single wall specimen was used in five different positions in the opening of a laboratory sound transmission loss test suite. Four different levels of room absorption were used. The conventional decay method is shown to work well in all cases, as does a method using a sound source with a known power to estimate the room absorption. A method using a sound-pressure level near the source and the room average, the near-far method, did not work as well.
Publication date
In
  • Journal of the Acoustical Society of America 80, no. 1 (July 1986): 206–211.
LanguageEnglish
Peer reviewedYes
IdentifierIRC-P-1396
NRC numberNRCC 26201
NRC-IRC-4391
NPARC number20358847
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Record identifierae4fa3de-23d3-4021-bf77-ddbcafd71d3b
Record created2012-07-20
Record modified2020-06-06
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