Efficient approximation of continuous wavelet transforms
- 25 April 1991
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 27 (9) , 748-750
- https://doi.org/10.1049/el:19910465
Abstract
An efficient algorithm is developed for computing the continuous wavelet transform or wideband ambiguity function on a grid whose samples are spaced uniformly in time but placed arbitrarily in scale. The method is based on the chirp z transform and requires the same order of computation as constant-bandwidth analysis techniques, such as the shorttime Fourier transform and narrowband ambiguity function.Keywords
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