Ridge and Phase Identification in the Frequency Analysis of Transient Signals by Harmonic Wavelets
- 1 April 1999
- journal article
- Published by ASME International in Journal of Vibration and Acoustics
- Vol. 121 (2) , 149-155
- https://doi.org/10.1115/1.2893957
Abstract
It is difficult to generate high-definition time-frequency maps for rapidly changing transient signals. New details of the theory of harmonic wavelet analysis are described which provide the basis for computational algorithms designed to improve map definition. Features of these algorithms include the use of ridge identification and phase gradient as diagnostic features.Keywords
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