宽频带封闭空间声场声模态的仿真研究  

Study on wide band acoustical modal analysis and shoulation of enclosure

作　　者：王峰林[1] 李明章[1] 刘占山[1] 王芝秋 张志华 

机构地区：[1]哈尔滨工业大学机电工程学院,黑龙江哈尔滨150001 [2]哈尔滨工程大学动力工程系,黑龙江哈尔滨150001

出　　处：《哈尔滨工业大学学报》1999年第5期30-33,共4页Journal of Harbin Institute of Technology

基　　金：中国博士后科学基金!中博基[1998]9号

摘　　要：讨论了简谐激励矩形封闭空间声场声模态分析的基本原理，提出了宽频率范围激励空间声场声压的声模态分析计算理论方法采用C＋＋语言编制了矩形空间声场频率特性分析和声模态形态的仿真软件，首次给出了空间声场声模态的形态仿真，通过计算机声模态仿真和声模态实验结果的对比验证了提出的计算方法的正确性。The acoustical modal calculation for a rectangular enclosure is analyzed and a new approach to calculate the sound modes in the enclosure with wide band sound signal excitation is proposed. The software of modal simtilation system includes acoustic modal frequencies and acoustic modal shapes is worked out for the first time by the use of C + + computer language. The experimental modal shapes in the enclosure are also measured with the use of TMS320 C25 DSP processor and the comparison between the simulation results and experiments proves that the theoretical analysis and simulation results are correct.

关 键 词：声场计算 宽频带激励 封闭空间声模态 仿真 

分 类 号：TB535[理学—物理] O422.2[理学—声学]