Pitch control in artificial speech
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United States of America Patent
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-
Nov 10, 1992
Grant Date -
N/A
app pub date -
Aug 13, 1990
filing date -
Aug 13, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Substantial pitch variations in artificial speech produced by dialing out a sequence of stored digital waveforms are made possible without significant distortion by varying pitch both by truncation or extension of pitch period waveforms, and by varying the dialout rate. In another aspect of the invention, pitch changes are made more natural by distributing each pitch change evenly over a large number of pitch periods during voiced phonemes.
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