A new room acoustics model based on a combined image source/hierarchical radiosity approach

• Autores: Diogo Alarcão, J.L. Bento Coelho
• Localización: Proceedings of the ISRA 2007 Seville, Vol. 3, 2008 (Oral Session Communications), ISBN 9788469082676
• Idioma: español
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• Resumen

  • A new combined model for the propagation of sound energy inside arbitrarily shaped rooms is presented. The walls of the arbitrary rooms are composed of reflecting surfaces, which reflect the sound energy as a mixture of specular and diffuse components. This new combined model uses a pure image source method with statistical extensions for high reflection orders and a time-dependent hierarchical radiosity method. The image source method models the propagation of the specularly reflected energy component, while the radiosity method calculates the propagation of the diffusely reflected energy components. Both methods operate independently from each other. The predicted room impulse responses are obtained through combination of the individual results from each method. Several algorithmic improvements are introduced in the computer implementation of this combined model