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METHOD AND APPARATUS FOR TRANSMITTING SPEECH ACTIVITY IN DISTRIBUTED VOICE RECOGNITION SYSTEMS

  • US 20070192094A1
  • Filed: 03/01/2007
  • Published: 08/16/2007
  • Est. Priority Date: 06/14/2001
  • Status: Active Grant
First Claim
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1. A signal bearing medium embodying a set of machine-readable instructions executable by a data processor for operating a speech recognition system employed by a wireless subscriber station, comprising:

  • receiving an acoustic speech signal, including periods of speech and non-speech, from a user of the wireless subscriber station;

    converting the acoustic speech signal to an electrical speech signal;

    assembling detected voice activity information related to the electrical speech signal;

    identifying feature extraction information related to the electrical speech signal;

    selectively utilizing said detected voice activity information and said feature extraction information to form advanced front end data;

    transmitting the detected voice activity information over a first wireless communication channel to a wireless base station, and transmitting the feature extraction information over a second wireless communication channel, separate from the first wireless communication channel, to the wireless base station.

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