基于小波分析的车辆噪声特征提取方法研究

Research of feature extraction of vehicle noise based on wavelet analysis

特征提取是声目标识别的关键。由于车辆噪声信号的非平稳特性,传统特征提取方法有很大局限性。介绍小波分析方法在车辆噪声信号特征提取中的应用,仿真结果证明该方法的有效性。

Feature extraction is the key of acoustic target recognition.Because the acoustic signal is non-stationary, the traditional feature extraction methods have large limitations.A wavelet analysis method used for feature extraction is introdueed in this paper.Simulation result proves that this method is effective.