二维封闭空间声传播系统仿真建模与实现  

Simulation modeling and implementation of two-dimensional enclosed space sound propagation system

作　　者：冯媛[1] 蔡增玉[1] 甘勇[1] 李娜娜[1] 

机构地区：[1]郑州轻工业学院计算机与通信工程学院,河南郑州450002

出　　处：《郑州轻工业学院学报（自然科学版）》2012年第5期95-98,共4页Journal of Zhengzhou University of Light Industry:Natural Science

基　　金："十一五"国家科技支撑计划项目(2006BAK01A38);河南省2010年基础与前沿技术研究计划项目(102300410110)

摘　　要：针对声传播过程难以实际测量的问题,建立了基于麦克斯韦波动方程的二维封闭空间声波传播模型,并基于奈奎斯特抽样定理实现了波动方程离散化,在此基础上得到了二维封闭空间声传播的仿真算法,用Matlab进行了实现.仿真结果表明本算法能够直观地显示声波在封闭空间传播情况,记录封闭空间声场内各点随时间的变化,便于实现对二维封闭空间声传播过程的观察和测量.Aiming at the difficulty in actual measurement of sound propagation, the two-dimensional en- closed space model of sound propagation system based on Maxwell＇s wave equation was established, the wave equation was discretized using Nyquist theory. The simulation arithmetic of two-dimensional enclosed space sound propagation system was built and realized using Matlab. The results showed that it can intui- tively show of sound in a enclosed space condition, record enclosed space acoustic field each point chan- ging with time, and it is easy to realize for two-dimensional enclosed space sound propagation process ob- servation and measurement.

关 键 词：计算机仿真 声传播系统 封闭空间 中心差分方程 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]