Touch-responsive circuit in electronic musical instrument

Details Touch-responsive circuit in electronic musical instrument Touch-responsive circuit in electronic musical instrument

1976-12-16

1978-10-24

Jackmon, Edith S.

Music

Instruments

84 113, 84 126, G10H 100, G10H 300, G10H 102

Patent

active

041213483

ABSTRACT:
In a touch-responsive circuit adapted for use in an electronic musical instrument provided with a keyboard, and comprising a key depression speed detector including a change-over switch, a capacitor for storing electric charge and a discharging resistor, and a controlling signal generating means including a gating transistor controlled by the key depression speed detector and another capacitor for storing electric charge through said transistor, a voltage-compensating element is connected in the key depression speed detector so as to compensate for the threshold voltage of the gating transistor thereby raising the minimum output voltage of the key depression speed detector and insuring the sound generation for the pianissimo performance.

REFERENCES:
patent: 3626074 (1971-12-01), Hiyama

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