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Matrix quantization with vector quantization error compensation for robust speech recognition

  • US 6,070,136 A
  • Filed: 10/27/1997
  • Issued: 05/30/2000
  • Est. Priority Date: 10/27/1997
  • Status: Expired due to Fees
First Claim
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1. A speech recognition system comprising:

  • a vector quantizer to receive first parameters of an input signal and generate a first quantization observation sequence;

    a first speech classifier to receive the first quantization observation sequence from the vector quantizer and generate first respective speech classification output data;

    a matrix quantizer to receive second parameters of the input signal and generate a second quantization observation sequence;

    a second speech classifier to receive the second quantization observation sequence from the matrix quantizer and generate second respective speech classification output data; and

    a hybrid decision generator to combine corresponding first and second respective speech classification data to generate third respective speech classification data and to recognize the input signal from the third respective speech classification data.

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