Analytical model of the diffuse sound transmission loss of finite double panel structures

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Abstract

An analytical model for the forced sound transmission loss of finite single-leaf walls using a variational technique was previously developed and validated. As the double panel is one of the most used structures in building acoustics, the aim of this paper is to extend the analytical model to consider double-panel structures. Analytical formulas for the forced part of the airborne sound
insulation of finite sized double-panel structures are derived using a variational technique based on the integral-differential equation of the fluid loaded panels. The formulas are valid in the entire audible frequency range. The results are compared with London’s classical analytical model and experimental measurements, with reasonable agreement.
Original languageEnglish
Title of host publicationProceedings of inter-noise 2021
Number of pages10
Publication date2021
Publication statusPublished - 2021
Event50th International Congress and Exposition on Noise Control Engineering - Virtual congress, Washington, United States
Duration: 1 Aug 20215 Aug 2021

Conference

Conference50th International Congress and Exposition on Noise Control Engineering
LocationVirtual congress
Country/TerritoryUnited States
CityWashington
Period01/08/202105/08/2021

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