时频分析在语音信号处理中的应用  

Application of Time-fequency Analysis in Speech Signals' Processing

作　　者：许丽群[1] 马驰[1] 王睿杰[1] 

机构地区：[1]大连交通大学电气信息学院,大连116028

出　　处：《科学技术与工程》2011年第21期5043-5046,5052,共5页Science Technology and Engineering

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.

关 键 词：时频分析 语音信号 Winger-Ville分布 重排理论 

分 类 号：TN912.3[电子电信—通信与信息系统]