Music – Instruments
Patent
1981-06-15
1982-11-30
Dobeck, B.
Music
Instruments
84DIG12, 364484, 307269, G10F 100, G01R 2300
Patent
active
043610668
ABSTRACT:
The present invention provides a system in an electronic musical instrument for measuring the setting of a variable resistor for controlling tempo, displaying the tempo to which the setting corresponds, and controlling the tempo so that notes are sounded in accordance with the setting measured and displayed. The tempo control comprises a tempo potentiometer that is self-calibrating by means of a microprocessor which automatically measures the resistance of both the current setting of the tempo potentiometer and the maximum setting of the potentiometer so as to maintain the desired correspondence between the mechanical position of the tempo potentiometer and the tempo selected. A non-linear relationship is introduced between the mechanical position of the tempo potentiometer and the tempo selected in order to maintain a desirable correspondence between the mechanical position of the tempo potentiometer and the tempo selected. An alternative embodiment of the present invention provides means for calibrating two potentiometers.
REFERENCES:
patent: 4089246 (1978-05-01), Kooker
patent: 4292874 (1981-10-01), Jones et al.
patent: 4299154 (1981-11-01), Dietrich et al.
Baldwin Piano & Organ Company
Dobeck B.
Isen Forester W.
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