×

Speech recognition using channel verification

  • US 8,346,554 B2
  • Filed: 09/15/2010
  • Issued: 01/01/2013
  • Est. Priority Date: 03/31/2006
  • Status: Active Grant
First Claim
Patent Images

1. A method comprising:

  • receiving an input signal;

    computing a plurality of scores for the input signal, the plurality of scores indicative of a degree to which the input signal corresponds to at least one state of a speech recognition model;

    computing an average signal based on the speech recognition model and the plurality of scores;

    computing, via at least one processor device, a difference value representative of a difference between the input signal and the average signal;

    processing, via the at least one processor device, the input signal in accordance with the difference value;

    wherein the scores are probability scores associated with states of the input signal and wherein the average signal is a moving average generated based on the input signal, the method further comprising;

    biasing scores of noise states associated with the speech recognition model to increase a probability that a segment of the input signal is deemed to be sound received on a noise channel rather than sound received on a speech channel, the average signal representative of sound present in the input signal.

View all claims
  • 7 Assignments
Timeline View
Assignment View
    ×
    ×