THE USE OF CONE-SHAPED KERNELS FOR GENERALIZED TIME-FREQUENCY REPRESENTATIONS OF NONSTATIONARY SIGNALS

被引：265

作者：

ZHAO, YX ^{[1
]}

ATLAS, LE ^{[1
]}

MARKS, RJ ^{[1
]}

机构：

[1] UNIV WASHINGTON,DEPT ELECT ENGN,INTERACT SYST DESIGN LAB,SEATTLE,WA 98195

来源：

IEEE TRANSACTIONS ON ACOUSTICS SPEECH AND SIGNAL PROCESSING | 1990年 / 38卷 / 07期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1109/29.57537

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Generalized time-frequency representations (GTFR's) which use cone-shaped kernels for nonstationary signal analysis are presented. The cone-shaped kernels are formulated for the GTFR's to produce simultaneously good resolution in time and frequency. Specifically, for a GFTR with a cone-shaped kernel, finite time support is maintained in the time dimension along with an enhanced spectrum in the frequency dimension, and the cross-terms are smoothed out. Experimental results on simulated data and real speech showed the advantages of the GTFR's with the cone-shaped kernels through comparisons to the spectrogram and the pseudo-Wigner distribution. © 1990 IEEE

引用

页码：1084 / 1091

页数：8

共 11 条

[1] OPTIMUM SMOOTHING OF THE WIGNER-VILLE DISTRIBUTION [J].

ANDRIEUX, JC ;

FEIX, MR ;

MOURGUES, G ;

BERTRAND, P ;

IZRAR, B ;

NGUYEN, VT .

IEEE TRANSACTIONS ON ACOUSTICS SPEECH AND SIGNAL PROCESSING, 1987, 35 (06) :764-769

[2]

ATLAS L, 1987, IEEE ENG MED BIO JUN, P29

[3]

CLAASEN TAC, 1980, PHILIPS J RES, V35, P277

[4]

CLAASEN TAC, 1980, PHILLIPS J RES, V35, P373

[5] GENERALIZED PHASE-SPACE DISTRIBUTION FUNCTIONS [J].

COHEN, L .

JOURNAL OF MATHEMATICAL PHYSICS, 1966, 7 (05) :781-&

[6]

Cornsweet T., 1970, VISUAL PERCEPTION

[7]

FLANDRIN P, 1984, MAR P ICASSP SAN DIE

[8]

KLATT DH, 1982, REPRESENTATION SPEEC, P181

[9]

Kohonen T, 1984, SELF ORG ASS MEMORY

[10] THE INTEGRATED SIGNAL-PROCESSING SYSTEM ISP [J].

KOPEC, GE .

IEEE TRANSACTIONS ON ACOUSTICS SPEECH AND SIGNAL PROCESSING, 1984, 32 (04) :842-851

← 1 2 →