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Fast waveform synchronization for concentration and time-scale modification of speech

  • US 20020143526A1
  • Filed: 09/14/2001
  • Published: 10/03/2002
  • Est. Priority Date: 09/15/2000
  • Status: Active Grant
First Claim
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1. A digital waveform concatenation system for use in an acoustic processing application, the system comprising:

  • a digital waveform provider that produces an input sequence of at least two digital waveform segments, each waveform segment being a sequence of samples; and

    a waveform concatenator that synchronizes, weights, and overlap-adds selected portions of the input segments to concatenate the input segments by using waveform blending within a concatenation zone to produce a single digital waveform;

    wherein the synchronizing includes aligning minimum energy anchors in each input segment, each minimum energy anchor location being optimized based on determining minimum weighted energy in the selected portion.

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