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| Characterization extraction and reconstruction of signals by the ridges of continuous wavelet transform |
| Zhang Xiaodong; Wang Qiao; Wu Lenan |
| Dept. of Radio Engineering Southeast University Nanjing 210096 China |
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Abstract The theory of detecting ridges in the modulus of the continuous wavelet transform is presented as well as reconstructing signal by using information on ridges. Application of the theory on speech signal is discussed in detail. Experimental result shows that as for signals with highest frequency at 4kHz, 3~5 ridges is enough to describe all of the information contained in the signal. The reconstructed signal reserves most of the necessary information of the original signal.
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Received: 17 January 2002
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2003, Vol. 25 
