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Speech recognition apparatus

  • US 5,526,466 A
  • Filed: 04/11/1994
  • Issued: 06/11/1996
  • Est. Priority Date: 04/14/1993
  • Status: Expired due to Fees
First Claim
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1. A speech recognition apparatus which recognizes input speech input to said apparatus, the input speech including plural recognizable units which have a shorter duration than the input speech, said apparatus obtaining a recognition unit corresponding to each recognizable unit and outputting final recognition results by successively connecting each obtained recognition unit, said apparatus comprising:

  • speech period sensing means for detecting a speech period by sensing a beginning and an end of the input speech;

    duration training means for calculating a relationship between durations of recognition units by using influencing factors which influence the duration of the recognition units;

    duration estimation means for estimating a duration of each of the recognizable units within the input speech by using the speech period of the input speech detected by the sensing means and a duration relationship calculated by the training means; and

    matching means for matching a recognition unit to a recognizable unit to produce a final recognition result based upon durations estimated by the estimation means.

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