Application of auditory spectrum-based features into acoustic target recognition  

作　　者：MA Yuanfeng CHEN Ke'an SHI Fang 

机构地区：[1]College of Marine, Northwestern Polytechnical University Xi'an 710072 [2]Chinese Flight Test Establishment, Yanliang Xi'an 710089

出　　处：《Chinese Journal of Acoustics》2010年第1期33-44,共12页声学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(10574104);the NPU Foundation for Fundamental Research(NPU-FFR-W018104)

摘　　要：In the acoustic target recognition, the auditory feature＇s advantages compare with the traditional target feature are studied by using the cascade compressive Gamma-Chrip （CcGC） filter model, which has been used to describe the auditory system function. It is concluded from the theoretical analysis and simulations that the auditory feature has better effects as the Signal-to-Noise Ratio （SNR） is reduced. Finally, the mechanism of the noise suppression in the cochlea is analyzed by the simulations, and the results show that the Equiw alent Rectangular Bandwidth rate （ERB-rate） expression in the frequency domain and the compression of cochlea are essential to the noise suppression.In the acoustic target recognition, the auditory feature＇s advantages compare with the traditional target feature are studied by using the cascade compressive Gamma-Chrip （CcGC） filter model, which has been used to describe the auditory system function. It is concluded from the theoretical analysis and simulations that the auditory feature has better effects as the Signal-to-Noise Ratio （SNR） is reduced. Finally, the mechanism of the noise suppression in the cochlea is analyzed by the simulations, and the results show that the Equiw alent Rectangular Bandwidth rate （ERB-rate） expression in the frequency domain and the compression of cochlea are essential to the noise suppression.

分 类 号：TN912.34[电子电信—通信与信息系统] TP242.63[电子电信—信息与通信工程]