Fast waveform synchronization for concentration and time-scale modification of speech
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United States of America Patent
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Jun 6, 2006
Grant Date -
Oct 3, 2002
app pub date -
Sep 14, 2001
filing date -
Sep 15, 2000
priority date (Note) -
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Abstract
A synthesis method for concatenative speech synthesis is provided for efficiently concatenating waveform segments in the time-domain. A digital waveform provider produces an input sequence of digital waveform segments. A waveform concatenator concatenates the input segments by using waveform blending within a concatenation zone to synchronize, weight, and overlap-add selected portions of the input segments to produce a single digital waveform. The synchronizing includes determining a minimum weighted energy anchor in the selected portion of each input segment and aligning synchronization peaks in a local vicinity of each anchor.
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