时频分析在语音信号处理中的应用

摘要

时频分析技术是近年来信号处理等领域一个新的研究热点.首先介绍了时频分析技术中的Winger-Ville分布和重排理论两种方法.然后应用这两种方法对去噪的语音信号进行时频分析处理.通过仿真结果表明,将重排理论应用于语音信号处理,能明显改进时频表示的可读性,更有效地识别信号和提取信息.%Time-frequency analysis is a research focus of signal processing in recent years.Firstly, two methods of time-frequency analysis including Winger-Ville distribution and reassignment theory are introduced.Then carries on the time-frequency analysis processing using two methods to the speech signal.Simulation results show that:applies the time-frequency analysis method in speech signal processing, can improve the time-frequency expression obviously the readability, effectively identification signal and extraction information.