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Expressions for First-Order Flanking Paths in Homogeneous Isotropic and Lightly Damped Buildings

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Expressions for first and second-order flanking paths are derived using the framework and assumptions of Statistical Energy Analysis (SEA). The resulting expression can be rewritten in terms of the sound reduction index (SRI) for resonant transmission through the structural flanking elements and it is shown that consideration must be given to the presence of a non-resonant component in measured SRI. Failure to do so will underestimate the SRI of the flanking paths. The SEA expression for first-order flanking paths is shown to be identical to the expression appearing in EN12354 Part 1 for airborne sound insulation, even though EN12354 was not derived using SEA. To help define situations for which the expressions are valid a set of criteria are presented and discussed.
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Document Type: Research Article

Publication date: January 1, 2003

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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