Electronic vibrato or celeste
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United States of America Patent
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-
Jan 31, 1984
Grant Date -
N/A
app pub date -
Nov 16, 1981
filing date -
Nov 16, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Electronic circuits are provided for producing an electronic timbre modulation for effecting celeste or vibrato similar in sonic results to the well-known Leslie rotating speaker system. Electronic signals corresponding to audio tones are generated and are modified by appropriate filters. Three controlling oscillators are locked in exactly 120.degree. phase relation to one another and act through three voltage controlled oscillators respectively to modulate three bucket brigade circuits through which said modified electronic signals are passed substantially in parallel. A roving band pass filter further modulates those of said electronic signals corresponding to flute tones to simulate other aspects of a Leslie speaker system.
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