运动声源的声全息识别方法

基金项目:

国家自然科学基金资助项目(59775020)

详细信息

Acoustic holography method for the identification of moving sound source

State Key Laboratory of Automotive Safety and Energy Engineering Department, Automotive Engineering Department, Tsinghua University Beijing Beijing 100084

摘要: 利用声全息方法分析运动声源的噪声辐射。从声音的多普勒效应出发,利用接收到的含有多普勒效应的声音信号构造出全息数据来完成全息重建。并根据该原理设计一套测量装置,实验表明利用该装置能够快速、准确地识别运动车辆表面的噪声。

Abstract: This paper presents the acoustical holography method for the identification of moving sound source. The non-stationary signal received by linear vertical microphone array is changed into stationary signal considering the doppler effect, then used to holographic construction. Simulations and vechile's experiments proved this method effiective.