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Automatic speech recognition

  • US 5,638,487 A
  • Filed: 12/30/1994
  • Issued: 06/10/1997
  • Est. Priority Date: 12/30/1994
  • Status: Expired due to Term
First Claim
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1. A method for recognizing speech from a received signal representing a spoken sequence of one or more words comprising the steps ofreceiving a sequence of frames of acoustic events separated by boundaries,assigning to received frames respective boundary probabilities representative of the degree to which the received frames of speech correspond to stored representations of boundaries between acoustic events,selecting boundary frames based on the boundary probabilities assigned to the frames,using selected boundary frames to generate sequences of one or more words between a first selected boundary frame and a subsequent selected boundary frame, wherein multiple words in any given sequence are separated by one or more selected boundary frames,assigning a score to each generated sequence, andproviding an output corresponding to recognized speech using the sequence of one or more words with the highest assigned score.

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