Musical tone waveform signal forming apparatus with pitch and tone color modulation
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United States of America Patent
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Jun 29, 1993
Grant Date -
N/A
app pub date -
Feb 19, 1991
filing date -
Feb 20, 1990
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A musical tone waveform signal forming apparatus comprises a delay loop circuit, a filter circuit a drive signal generation circuit and a modulation control circuit. The drive signal generation circuit inputs a drive signal to the delay loop circuit so that a musical tone is formed in the delay loop circuit. The filter circuit filters the musical tone. The modulation control circuit changes the delay length of the delay loop circuit and the characteristics of the filter circuit thereby adding a modulation effect on the musical tone to be generated.
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