Digital tone generation system utilizing fixed duration time functions
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United States of America Patent
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-
May 8, 1984
Issued Date -
N/A
app pub date -
Aug 27, 1982
filing date -
Sep 25, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A tone generation system intended primarily for use in electronic musical instruments wherein a digital representation of a harmonically rich waveform is sampled, and a musical tone is produced therefrom. The stored waveform could be the four term Blackman-Harris window function, which has negligible side lobes and thus greatly attenuated higher harmonics. The stored function is read out at a fixed rate, but the time periods between successive readings of the waveform are varied to thereby vary the frequency of the output signal.
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