A combination of the acoustic radiosity and the image source method

Georgios I. Koutsouris, Jonas Brunskog, Cheol-Ho Jeong, Finn Jacobsen

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Abstract

A combined model for room acoustic predictions is developed, aiming to treat both diffuse and specular reflections in a unified way. Two established methods are incorporated: acoustical radiosity, accounting for the diffuse part, and the image source method, accounting for the specular part. The model is based on conservation of acoustical energy. Losses are taken into account by the energy absorption coefficient, and the diffuse reflections are controlled via the scattering coefficient, which defines the portion of energy that has been diffusely reflected. The way the model is formulated allows for a dynamic control of the image source production, so that no fixed maximum order is required.
Original languageEnglish
Title of host publicationInternoise 2012
Number of pages12
Publication date2012
Publication statusPublished - 2012
Event41st International Congress and Exposition on Noise Control Engineering - Marriott Marquis, New York City, NY, United States
Duration: 19 Aug 201222 Aug 2012
Conference number: 41

Conference

Conference41st International Congress and Exposition on Noise Control Engineering
Number41
LocationMarriott Marquis
CountryUnited States
CityNew York City, NY
Period19/08/201222/08/2012

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