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Method and system for automatic speech recognition

  • US 9,472,190 B2
  • Filed: 04/28/2014
  • Issued: 10/18/2016
  • Est. Priority Date: 01/30/2013
  • Status: Active Grant
First Claim
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1. A method of recognizing speech, comprising:

  • generating a decoding network for decoding speech input, the decoding network comprising a primary sub-network and one or more classification sub-networks, wherein;

    the primary sub-network includes a plurality of classification nodes, each classification node corresponding to a respective classification sub-network of the one or more classification sub-networks, wherein each respective classification sub-network is distinct from the primary sub-network; and

    each classification sub-network of the one or more classification sub-networks corresponds to a group of uncommon words;

    receiving a speech input; and

    decoding the speech input by;

    instantiating a token corresponding to the speech input in the primary sub-network;

    passing the token through the primary sub-network;

    when the token reaches a respective classification node of the plurality of classification nodes, transferring the token to the corresponding classification sub-network;

    passing the token through the corresponding classification sub-network;

    when the token reaches an accept node of the classification sub-network, returning a result of the token passing through the classification sub-network to the primary sub-network, wherein the result includes one or more words in the group of uncommon words corresponding to the classification sub-network;

    outputting a string corresponding to the speech input that includes the one or more words.

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