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Pattern matching apparatus

  • US 4,742,547 A
  • Filed: 07/28/1987
  • Issued: 05/03/1988
  • Est. Priority Date: 09/03/1982
  • Status: Expired due to Term
First Claim
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1. A pattern matching apparatus for speech pattern recognition comprising:

  • first means for developing a first quantity representing a distance or similarity measure between feature vectors at respective time points (i, j) of first and second patterns, each of said first and second patterns expressed by a time sequence of feature vectors, along time axes;

    second means for developing a second quantity which is an integration quantity of said first quantity at integration time point (i, j) on the basis of said first quantity at time points including at least said integration time point and a plurality of second quantities obtained at a plurality of predetermined time points previous to said integration time point (i, j); and

    comparison means for comparing lengths I, J of said first and second patterns with each other and producing a signal for selecting said plurality of predetermined time points in said second means in accordance with the result of the comparison.

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