Method and apparatus for digitally generating musical notes
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United States of America Patent
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Sep 4, 1990
Grant Date -
N/A
app pub date -
Jan 17, 1989
filing date -
Jan 17, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An electronic musical instrument of the digital synthesis type that uses digital processing techniques to impart not only the desired harmonic structure and pitch, but also to impart the correct amplitude and envelope. Only after all of the harmonic structure processing, all amplitude scaling, and all panning/mixing has been performed in digital circuitry, are the four outputs converted by digital to analog converters into analog musical outputs. Part of the digital processing includes a digital scaling circuit using a barrel interpolator to scale each sample from 1/2 to 31/32 and a shift right register to scale each sample between 1 and 1/32,768.
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