A time domain correction method for Doppler-distortion signal from acoustic moving source

查看全文 作　　者：LIU [1]Fang;HE [1]Qingbo;SHEN [1]Changqing;HU [1]Fei;ZHANG [1]Ao;KONG [1]Fanrang

机构地区：[1]Department of Precision Machinery and Precision Instrumentation,University of Science and Technology of China

出　　处：《Chinese Journal of Acoustics》索引2014年第33卷第1期,共10页

基　　金：supported by the National Science Foundation of China(51075379) 摘　　要：Doppler effect widely exists in the signal from the moving acoustic source.In order to solve such problems as frequency shift and frequency band expansion,a time domain correction method is presented in this paper.First,the discrete time vector for interpolation and the amplitude restoration formula is derived based on the moving relationship and the Morse acoustic theory,then the amplitude weights are corrected and the distortion signal is interpolated.Every point of the discrete signal is operated separately in time domain.Compared with the existing frequency domain methods,this method does not need to know the characteristic frequency beforehand and would not be influenced by the blending of the frequency band.Hence,this method can be employed to correct multiple frequency signals and it is also a simple and effective Doppler effect reduction method. 关键词：多普勒效应失真信号校正方法时域移动声源频带扩展声学理论

相关文献

参考文献（8）
引证文献（2）
耦合文献（90）

参考文献(8)

引证文献(2)

耦合文献(90)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

A time domain correction method for Doppler-distortion signal from acoustic moving source

参考文献(8)

引证文献(2)

耦合文献(90)

用户提示