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Bio-Design and Manufacturing  2018 Vol.1 No.4 P.402-407

10.1631/jzus.2000.0402


COMPUTER SIMULATION MODEL FOR ROOM DIFFUSE SOUND FIELD


Author(s):  GE Jian, SHI Jian-ren

Affiliation(s):  Dept. of Architecture, Zhejiang University, Hangzhou 310027, China

Corresponding email(s): 

Key Words:  diffuse reflection, room sound field, computer simulation


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GE Jian, SHI Jian-ren. COMPUTER SIMULATION MODEL FOR ROOM DIFFUSE SOUND FIELD[J]. Journal of Zhejiang University Science D, 2018, 1(4): 402-407.

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Abstract: 
With the development of computer simulation technique for room acoustics, diffuse reflection is considered more and more important. In this paper, some models are developed by considering two diffuse factors in a room-diffuse reflection due to room surfaces and scattering due to objects. The surface diffusion is treated by two different methods on the basis of probability analysis or Energy Conservation Law, and the scattering among objects is simulated as a multiple random ray-tracing process. Thus the sound pressure level distribution in a diffuse sound field can be calculated more precisely and easily. Agreement between the computer simulation results and measurements shows the accuracy of the mathematical and physical model and the applicability of the computer simulation methods. These models can be used in noise control engineering, as well as in the practice of acoustical design.

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Reference

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