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Word hypothesizer for continuous speech decoding using stressed-vowel centered bidirectional tree searches

  • US 5,349,645 A
  • Filed: 12/31/1991
  • Issued: 09/20/1994
  • Est. Priority Date: 12/31/1991
  • Status: Expired due to Term
First Claim
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1. A high-speed continuous speech-decoding system decoding a speech sentence by utilizing two-pass decoding, said system comprising:

  • means for converting a speech utterance into a sequence of feature vectors;

    means for detecting stressed vowel centers in said sequence of feature vectors;

    means for generating a word lattice based on the detected stressed vowel centers; and

    means for performing a time-synchronous Viterbi beam search using the word lattice from said generating means to constrain said Viterbi beam search.

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