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Method and device for speech recognition

  • US 5,694,520 A
  • Filed: 01/11/1996
  • Issued: 12/02/1997
  • Est. Priority Date: 06/29/1994
  • Status: Expired due to Term
First Claim
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1. A method for recognizing spoken language comprising the steps of:

  • identifying a number of phonemes from a segment of input speech;

    interpreting the phonemes as possible word combinations to establish a model of the speech with word and sentence accents according to a standardized pattern;

    determining the fundamental tone curve of the input speech;

    determining the maximum and minimum values of the fundamental tone curve of the input speech and their respective positions;

    determining the maximum and minimum values of the fundamental tone curve of the speech model;

    comparing the fundamental tone curve of the input speech and the fundamental tone curve of the speech model to identify a time difference between the maximum and minimum values of the fundamental tone curve of the incoming speech in relation to the maximum and minimum values of the fundamental tone curve of the speech model;

    adjusting the intonation pattern of the speech model utilizing the identified time difference to modify the speech model to conform with the dialectal characteristics of the input speech.

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