Speech synthesizer with repeated symmetric segment
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United States of America Patent
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-
Sep 1, 1987
Grant Date -
N/A
app pub date -
Dec 5, 1983
filing date -
Dec 8, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A speech synthesizer for reproducing natural speech with small memory. Synthesized speech consists of symmetric speech segments. Only half of a symmetric speech segment is stored in a memory through ADPCM code, and the other half of the segment is generated by using the stored half segment. Repeat control data is also stored in a memory so that only a single segment is enough to be stored when the same segments are repeated. In the repeated process, the amplitude of the segment is changed smoothly so that amplitude discontinuity between the two successive segments does not occur. The synthesized digital speech data is converted to an analog waveform by using a digital to analog converter.
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