Computing Reverberation Time in a 3D Room Model Using a Finite Difference Method Applied for the Diffusion Equation

• Autorzy: Kraszewski J.
• Języki publikacji: EN

Abstrakty

EN

The article presents theoretical values of reverberation times calculated on the basis of the diffusion equation for three room models: flat, cubic, and long. The article shows that not only the average absorp- tion coefficient, but also location of the absorbent material, as well as the place where the time is counted have an impact on the reverberation time, calculated on the basis of the diffusion equation. Despite that, the diffusion model is based on statistical assumptions. The primary goal of the article was to show that the model has geometrical features.

Słowa kluczowe

EN

diffusion method; reverberation time; finite differences method

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2012
• Tom: Vol. 37, No. 2
• Strony: 171--180
• Opis fizyczny: Bibliogr. 15 poz., tab.

Twórcy

autor

Kraszewski J.

• Chair of Acoustics, Institute of Telecommunication, Teleinformatics and Acoustics, Wrocław University of Technology Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland,

Bibliografia

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• 2. Billon A., Foy C., Picaut J., Valeau V., Sakout A. (2008b), Modeling the sound transmition between rooms coupled through partition walls by using a diffusion model, Journal of Acoustical Society of America, 123, 6, 4261-4271.
• 3. Bilion A., Valeau V., Sakout A., Picaut J. (2006), On the use of a diffusion model for acoustically coupled rooms, Journal of Acoustical Society of America, 120, 4, 2043-2054.
• 4. Dobrucki A., Kraszewski J. (2011), Application Modified numerical algorithm for diffusion equation applied in room acoustics, 58th Open Seminar on Acoustics joined with 2nd Polish-German Structured Conference on Acoustics, 181-202.
• 5. Jing Y., Xiang N. (2007), A modified diffusion equation for room acoustic predication, Journal of Acoustical Society of America, 121, 6, 3284-3287.
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• 7. Kraszewski J. (2010a), Boundary term modification in room acoustic field modeling using diffusion equation method, based on finite difference method, 57th Open Seminar on Acoustics OSA, 99-102.
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• 12. Valeau V., Hodgson M., Picaut J. (2007), A diffusion-based analogy for the prediction of sounds fields in fitted rooms, Acta Acustica united with Acustica, 93, 94-105
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• 14. Weyna S. (2010), Acoustic intensity imaging methods for in-situ wave propagation, Archives of Acoustics, 35, 2, 265-273.
• 15. Xiang N., Jing Y., Bockman A.C. (2009), Investigation of acoustically coupled enclosures using a diffusion-equation model, Journal of Acoustical So ciety of America, 126, 3, 1187-1198.