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Methods and systems for performing synchronization of audio with corresponding textual transcriptions and determining confidence values of the synchronization

  • US 8,543,395 B2
  • Filed: 05/18/2010
  • Issued: 09/24/2013
  • Est. Priority Date: 05/18/2010
  • Status: Active Grant
First Claim
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1. A method of processing audio signals, comprising:

  • receiving an audio signal comprising vocal elements;

    a processor performing a forward alignment of the vocal elements in a forward direction with corresponding textual transcriptions of the vocal elements;

    based on the forward alignment, determining forward timing boundary information associated with an elapsed amount of time for a duration of a portion of the vocal elements processed in the forward direction;

    the processor performing a reverse alignment of the vocal elements processed in a reverse direction with corresponding reverse textual transcriptions of the vocal elements;

    determining reverse timing boundary information associated with an elapsed amount of time for a duration of the portion of the vocal elements processed in the reverse direction;

    processing the reverse alignment of the vocal elements and the reverse timing boundary information so as to provide the reverse alignment and the reverse timing boundary information in a forward direction and establish a second forward alignment of the vocal elements and a second forward timing boundary information; and

    based on a comparison between the forward timing boundary information and the second forward timing boundary information, outputting a confidence metric indicating a level of certainty for at least one of the forward timing boundary information and the second forward timing boundary information.

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