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A computer simulation model for room sound field considering diffuse reflection
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作者 Ge Jian, Wu Shuo xian Department of Architecture, Zhejiang University, Hangzhou 310027, China 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 1999年第1期115-121,共7页
A multiple random ray tracing model was developed for predicting the distribution of sound pressure levels in an enclosed space of any shape. This model considered two diffuse factors of a room:diffuse reflection du... A multiple random ray tracing model was developed for predicting the distribution of sound pressure levels in an enclosed space of any shape. This model considered two diffuse factors of a room:diffuse reflection due to room surfaces and scattering due to objects. The surface diffusion was treated by two different methods on the basis of probability analysis, and the scattering was simulated by a multiple random ray tracing process. Thus the sound pressure level distribution in a diffuse sound filed can be calculated more precisely. 展开更多
关键词 diffuse reflection room sound filed computer simulation.
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房间隔声的声辐射度模拟计算
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作者 蒋国荣 陈文杰 《噪声与振动控制》 CSCD 2020年第4期17-20,52,共5页
为计算房间之间的空气声隔声,提出一种基于声辐射度的隔声计算模型。通过房间之间的声辐射度传递,模拟房间隔声中的声传播,建立房间的声辐射度系统方程。通过辐射度方程的数值求解实现隔声房间的声场模拟,由此计算获得房间之间的隔声量... 为计算房间之间的空气声隔声,提出一种基于声辐射度的隔声计算模型。通过房间之间的声辐射度传递,模拟房间隔声中的声传播,建立房间的声辐射度系统方程。通过辐射度方程的数值求解实现隔声房间的声场模拟,由此计算获得房间之间的隔声量。通过房间隔声的实测对比验证该隔声计算模型的正确性。对于不同条件的房间隔声模拟表明,当房间中声场扩散度较高时该隔声模型与统计声学模型的结果符合良好;当房间中的声场偏离扩散场时,该模型仍可准确计算房间隔声量,因而具有广泛的适用性。 展开更多
关键词 声学 房间隔声 声辐射度 声场模拟
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