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Method for analyzing a signal by wavelets

  • US 5,124,930 A
  • Filed: 02/20/1990
  • Issued: 06/23/1992
  • Est. Priority Date: 03/03/1989
  • Status: Expired due to Fees
First Claim
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1. A device for analysis by wavelets, comprising:

  • an analog/digital converter enabling sampling and digitization of N points of an incoming signal S(t);

    a clock circuit enabling delivery of a clock signal H0 at a sampling frequency to said converter, and clock signals Hl -Hp, corresponding sampling frequencies of which are submultiples of two of the sampling frequency of the clock signal H0 ;

    a memory circuit enabling memorizing and delivery of wavelet Ψ

    0 and scale Φ

    0 signals; and

    p sets of convoluters, a first set having two convoluters which receive and convolute said sampled and digitized incoming signal S(t) using said H1, Ψ

    0 and Φ

    0 signals and output a first pair of convoluted signals, and sets j for j≧

    2 each including 2j convoluters receiving, two by two, respectively 2j-1 convoluted signals output by an order j-1 set, using the signals Ψ

    0 and Φ

    0 and a clock signal Hj ;

    selection means for receiving all the convoluted signals from the convoluters and selecting at least one of the convoluted signals from the convoluters; and

    means for interpreting the signals thus selected.

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