The use of cone-shaped kernels for generalized time-frequency representations of nonstationary signals

Author

Zhao, Yunxin ; Atlas, Les E. ; Marks, Robert J.

Author_Institution

Interactive Syst. Design Lab., Washington Univ., Seattle, WA, USA

Volume

38

Issue

7

fYear

1990

fDate

7/1/1990 12:00:00 AM

Firstpage

1084

Lastpage

1091

Abstract

Generalized time-frequency representations (GTFRs) which use cone-shaped kernels for nonstationary signal analysis are presented. The cone-shaped kernels are formulated for the GTFRs to produce good resolution simultaneously in time and frequency. Specifically, for a GTFR 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 show the advantages of the GTFRs with the cone-shaped kernels through comparisons to the spectrogram and the pseudo-Wigner distribution

Keywords

signal processing; speech analysis and processing; cone-shaped kernels; generalized time-frequency representations; nonstationary signals; pseudo-Wigner distribution; spectrogram; speech; Convolution; Equations; Fourier transforms; Interactive systems; Kernel; Signal analysis; Signal resolution; Spectrogram; Speech analysis; Time frequency analysis;

fLanguage

English

Journal_Title

Acoustics, Speech and Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

0096-3518

Type

jour

DOI

10.1109/29.57537

Filename

57537