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Speech index pruning

  • US 20070106512A1
  • Filed: 11/09/2005
  • Published: 05/10/2007
  • Est. Priority Date: 11/09/2005
  • Status: Active Grant
First Claim
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1. A method of indexing a speech segment, the method comprising:

  • identifying at least two alternative speech unit sequences based on the speech segment;

    for each speech unit in the at least two alternative speech unit sequences, placing information in an entry in the index that indicates a position of the speech unit in at least one of the two alternative speech unit sequences and a probability of the speech unit appearing at the position; and

    eliminating speech units from entries in the index based on a comparison of the probabilities to a threshold value.

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