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Method of dynamically altering grammars in a memory efficient speech recognition system

  • US 7,324,945 B2
  • Filed: 06/28/2001
  • Issued: 01/29/2008
  • Est. Priority Date: 06/28/2001
  • Status: Active Grant
First Claim
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1. A method for allocating memory in a speech recognition system comprising the steps of:

  • acquiring a first set of data structures that contain a grammar, a word subgrammar, a phone subgrammar and a state subgrammar, each of the subgrammars related to the grammar, wherein the first set of data structures is generated by the speech recognition system based at least in part on a grammar provided by a remote computer;

    acquiring a speech signal;

    performing a probabilistic search using the speech signal as an input, and using the first set of data structures as possible inputs; and

    allocating memory for one of the subgrammars when a transition to that subgrammar is made during the probabilistic search.

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