DocumentCode
1091260
Title
Power spectral estimation via nonlinear frequency warping
Author
Bell, David M. ; Gowdy, John N.
Author_Institution
Electronic Systems Division, Harris Corporation, Melbourne, FL
Volume
26
Issue
5
fYear
1978
fDate
10/1/1978 12:00:00 AM
Firstpage
436
Lastpage
441
Abstract
The technique of frequency warping for the estimation of power spectra of random signals with a nonlinear frequency scale is treated. The frequency spacing of the spectral estimates obtained via nonlinear frequency warping is compared to constant Q analysis. A procedure for reduction of the variance of the spectral estimators is described, a relationship is derived for this variance, and experimental verification is provided. Finally, example spectrograms are presented depicting applications of the technique.
Keywords
Algorithm design and analysis; Bandwidth; Fast Fourier transforms; Filters; Frequency estimation; Helium; Power measurement; Signal processing; Signal resolution; Spectrogram;
fLanguage
English
Journal_Title
Acoustics, Speech and Signal Processing, IEEE Transactions on
Publisher
ieee
ISSN
0096-3518
Type
jour
DOI
10.1109/TASSP.1978.1163133
Filename
1163133
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