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SPEECH SIGNAL PROCESSING RESPONSIVE TO LOW NOISE LEVELS

  • US 20130211832A1
  • Filed: 02/09/2012
  • Published: 08/15/2013
  • Est. Priority Date: 02/09/2012
  • Status: Abandoned Application
First Claim
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1. A method of speech recognition in a vehicle, the method comprising the steps of:

  • (a) receiving, via a microphone, audio including noise and a speech signal representative of an utterance from a user;

    (b) calculating, via a processor, a signal-to-noise ratio (SNR) for the received audio;

    (c) determining whether the calculated SNR is greater than a predetermined SNR and, if so, then;

    (d) identifying a noise distribution for addition to the received audio; and

    (e) injecting into the received audio, noise corresponding to the identified noise distribution to produce noise-injected audio including the speech signal.

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