摘要
研究出一种真正的非平稳信号分析方法,用时频图表示非平稳信号的动态频谱,经历了四十多年丰富多彩的发展,终于在最近几年中取得了重要进展,并与小波理论相结合,形成了能概括大部分重要分布的统一理论框架,称为广义时频表示。本文概述和评论广义时频表示的最新研究成果,并以语音信号的时频表示为例,论述了它的广阔应用前景。
The exploration of a real method to analyze non-stationary signals and devising a time-frequency representation of signals have steadily developed over the last 40years,and there have recently been significant advance.Moreover,combined with the.wavelet theory,it has initially been developed into a unifying framework,called as the generalized time-frequency representation(GTFR),which includes the most important distributions.This paper reviews the GTFR and describes the potential of its wide applications by taking some examples of speech analysis.
出处
《电子学报》
EI
CAS
CSCD
北大核心
1993年第10期92-101,共10页
Acta Electronica Sinica
基金
北京大学视觉与听觉信息处理实验室基金
国家自然科学基金
关键词
时频表示
信号分析
非平稳信号
Time-frequercy representation,Signal analysis,Non-stationary signal analysis
