Tuning device for musical instruments
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United States of America Patent
Stats
-
Mar 3, 1981
Grant Date -
N/A
app pub date -
Nov 6, 1978
filing date -
Nov 9, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device for the measurement of the number of cycles or half-cycles of a tone by counting the cycles during a reference time which is proportional to the cycle time of the tone to be measured, comprising a store for the cycle times, a comparator, a subtraction device in which a constant value is subtracted from the counted number of tone cycles, decoders, displaying devices for the oscillation error and the polarity sign, a retriggerable mono-flop for the oscillation existence signal, a flip-flop for a wait signal, a mono-flop for a read signal and logic elements for enabling the oscillation counter and the reference pulse counter.
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Cited Art Landscape
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