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Updating markov models based on speech input and additional information for automated telephone directory assistance

  • US 5,644,680 A
  • Filed: 05/25/1995
  • Issued: 07/01/1997
  • Est. Priority Date: 04/14/1994
  • Status: Expired due to Term
First Claim
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1. A method for performing desired actions in response to speech signals, comprising:

  • storing representations of speech signals;

    calculating, according to a speech recognition algorithm responsive to the representations of speech signals, measures of probability that the speech signals correspond to each of a plurality of actions in an action vocabulary;

    selecting actions in response to the calculated measures of probability and automatically performing said actions from the action vocabulary;

    acquiring further data indicative of desired actions;

    calculating, according to a speech recognition algorithm responsive to both the representations of the speech signals and the further data, further measures of probability that the speech signals correspond to each of a plurality of actions;

    labelling the stored representations of speech signals in response to the further calculated measures of probability; and

    calculating speech recognition algorithm model parameters in response to the labelled stored representations of speech signals.

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