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Method of and apparatus for signal recognition that compensates for mismatching

  • US 5,727,124 A
  • Filed: 06/21/1994
  • Issued: 03/10/1998
  • Est. Priority Date: 06/21/1994
  • Status: Expired due to Term
First Claim
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1. A method of identifying a signal as similar to a particular stored representation in a set of stored representations of signals, the method comprising:

  • (a) comparing the signal to the set of stored representations to generate a first set of similarity values;

    (b) computing a function of the signal;

    (c) determining a transformation based upon the signal, at least a portion of the function, and at least one stored representation associated with at least one similarity value in the first set of similarity values;

    (d) transforming the signal with the transformation to generate a transformed signal;

    (e) comparing the transformed signal to the set of stored representations to generate a second set of similarity values; and

    (f) based upon the second set of similarity values, identifying the signal as similar to the particular stored representation.

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