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A quick method of estimating sound insulation

โœ Scribed by Vladimir D. Smirenov

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
427 KB
Volume
40
Category
Article
ISSN
0003-682X

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โœฆ Synopsis

A BS TRA C T A time selective free-field technique is applied to simpl(]'y the nwasurement ~[" transmission loss for lightweight partitions. It is shown how a combination 0[" dual channel spectrum and cepstrum anaO,ses based on FFT techniques permits one to measure the local sound insulation at normal incidence.

Cepstral processing allows the accurate extraction of the ,~vstem's impulse response, buried in reverberant noise. The final frequenct' resolution o[ the method depends on the size of the test speeimen and eepstral window. Good agreenwnt is obtained between theoretical and measured transmission loss/or single and double partitions.

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