Generalized instantaneous parameters and window matching in the time-frequency plane

被引：15

作者：

Jones, G ^{[1
]}

Boashash, B ^{[1
]}

机构：

[1] QUEENSLAND UNIV TECHNOL,SIGNAL PROC RES CTR,BRISBANE,QLD 4001,AUSTRALIA

来源：

IEEE TRANSACTIONS ON SIGNAL PROCESSING | 1997年 / 45卷 / 05期

基金：

澳大利亚研究理事会;

关键词：

instantaneous parameters; short-time Fourier transform; time-frequency analysis; window matching;

D O I：

10.1109/78.575699

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, the concept of instantaneous parameters, which has previously been associated exclusively with 1-D measures like the instantaneous frequency and the group delay, are extended to the 2-D time-frequency plane, Such generalized instantaneous parameters are associated with the short-time Fourier transform, They may also be interpreted as local moments of certain time-frequency distributions, It is shown that these measures enable local signal behavior to be characterized in the time-frequency plane for nonstationary deterministic signals, The usefulness of the generalized instantaneous parameters is demonstrated in their application to optimal selection of windows for spectrograms. This is achieved through window matching in the time-frequency plane, An algorithm is provided that illustrates the performance of this window matching, Results based on simulated and real data are presented.

引用

页码：1264 / 1275

页数：12

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