×

Voice recognition system

  • US 4,829,576 A
  • Filed: 10/21/1986
  • Issued: 05/09/1989
  • Est. Priority Date: 10/21/1986
  • Status: Expired due to Fees
First Claim
Patent Images

1. A text locating system comprising:

  • means for storing an acoustic description of each of a plurality of vocabulary words;

    means for representing a body of text having a sequence of words, said body of text being other than a list of said vocabulary words;

    means for receiving an acoustic description of one or more utterances to be recognized;

    recognition means for comparing the acoustic descriptions of the utterances to be recognized against acoustic descriptions of a recognition vocabulary comprised of one or more of said vocabulary words to select which of the words in said recognition vocabulary most probably correspond to said one or more utterances;

    search-string means for receiving one or more vocabulary words determined by said recognition means as corresponding to said one or more utterances and for creating a search string out of them;

    matching means for searching at least a portion of said body of text for a sub-sequence of one or more words matching said search string;

    probability altering means for altering the probability that said recognition means will select a given vocabulary word as corresponding to a given utterance as a function of the frequency of occurrence of that vocabulary word in at least a portion of said body of text.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×