A combination of the acoustic radiosity and the image source method

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

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 language	English
Title of host publication	Internoise 2012
Number of pages	12
Publication date	2012
Publication status	Published - 2012
Event	41st International Congress and Exposition on Noise Control Engineering - Marriott Marquis, New York City, NY, United States Duration: 19 Aug 2012 → 22 Aug 2012 Conference number: 41

Conference

Conference	41st International Congress and Exposition on Noise Control Engineering
Number	41
Location	Marriott Marquis
Country/Territory	United States
City	New York City, NY
Period	19/08/2012 → 22/08/2012

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Invited paper

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title = "A combination of the acoustic radiosity and the image source method",

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.",

author = "Koutsouris, {Georgios I.} and Jonas Brunskog and Cheol-Ho Jeong and Finn Jacobsen",

note = "Invited paper; 41st International Congress and Exposition on Noise Control Engineering, Inter-Noise 2012 ; Conference date: 19-08-2012 Through 22-08-2012",

year = "2012",

language = "English",

booktitle = "Internoise 2012",

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AU - Brunskog, Jonas

AU - Jeong, Cheol-Ho

AU - Jacobsen, Finn

N1 - Conference code: 41

PY - 2012

Y1 - 2012

N2 - 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.

AB - 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.

M3 - Article in proceedings

BT - Internoise 2012

T2 - 41st International Congress and Exposition on Noise Control Engineering

Y2 - 19 August 2012 through 22 August 2012

ER -

A combination of the acoustic radiosity and the image source method

Abstract

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