✦ LIBER ✦

Calculation methods for the transmission loss of single, double and triple partitions

✍ Scribed by A. Brekke

Publisher: Elsevier Science
Year: 1981
Tongue: English
Weight: 618 KB
Volume: 14
Category: Article
ISSN: 0003-682X
DOI: 10.1016/0003-682x(81)90034-7

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✦ Synopsis

Methods of calculating

the transmission loss for single and double walls arc presented. These methods are developed using a statistical energy analysis (SEA). In principle the methods are basedon separate calculations of resonant andnon-resonant transmission for frequencies less than the critical jiequency, f , of the panels and calculation of onI)! resonant transmission ftir frequencies equul to, und greater than, f,.

Comparisons hetM~een calculated and measured results show good agreement.

A ccrlculntion method is also presented-for the transmission loss of triplepanels,for frequencies greater than the cut-qff:frequenc:1afor the cavities. For,frequenries less thun the cut-offfrequencyfor the smcrllest cavity depth it is shown thut, in most cuses, the @kct of the middle panel is very slight. NOMENCLATURE

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