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System and method for prosodically modified unit selection databases

  • US 9,997,154 B2
  • Filed: 05/12/2014
  • Issued: 06/12/2018
  • Est. Priority Date: 05/12/2014
  • Status: Active Grant
First Claim
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1. A method comprising:

  • selecting, via a processor, speech units from a speech unit database, where the speech units are used to generate speech correspond to text;

    identifying a desired prosodic curve of the speech to be produced from the speech units;

    identifying an actual prosodic curve of the speech units;

    decomposing, via a residual-excited linear prediction algorithm, the speech units into residual coefficients and linear predictive coder coefficients;

    determining a cost of modifying the residual coefficients to yield a determination;

    modifying, via a pitch synchronous overlap and add algorithm, the residual coefficients, to yield modified residual coefficients based on the determination;

    combining, via the residual-excited linear prediction algorithm, the modified residual coefficients with the linear predictive coder coefficients, to yield new speech units, such that a new prosodic curve corresponding to the new speech units conforms to the desired prosodic curve; and

    generating the speech using the new speech units.

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