Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/25077
Title: On the time-frequency analysis of signals that decay exponentially with time
Authors: Tang, SK 
Issue Date: 2000
Publisher: Academic Press
Source: Journal of sound and vibration, 2000, v. 234, no. 2, p. 241-258 How to cite?
Journal: Journal of sound and vibration 
Abstract: The use of the short-time Fourier transform and the wavelet transform implemented using the new harmonic wavelets for analyzing the time variation of the spectral contents of exponentially time-decaying signals is studied in the present investigation. Focus is also placed on how well these methods can recover the decay constant of each frequency component in the signals in a relatively narrow bandwidth situation. Both artificial and experimentally recorded signals have been used. Results suggest that the short-time Fourier transform is in general more reliable than the wavelet transform for the present purpose. The short-time Fourier transform also gives excellent recovery of the decay constants if the signals are made up of discrete frequency components.
URI: http://hdl.handle.net/10397/25077
ISSN: 0022-460X
EISSN: 1095-8568
DOI: 10.1006/jsvi.1999.2876
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