Control waveform generators for electronic musical instruments

Details Control waveform generators for electronic musical instruments Control waveform generators for electronic musical instruments

1980-02-27

1982-01-05

Witkowski, S. J.

Music

Instruments

84 126, 84 127, G10H 1055, G10H 1057

Patent

active

043087795

ABSTRACT:
In a control waveform generator for an electronic musical instrument of the type wherein the generator generates a control waveform adapted to control at least one of a tone pitch, a tone color and a tone volume, the control waveform generator is constituted by a pulse generator for generating a pulse signal having a repetitive frequency, and a detector including a counter which starts to count the number of the pulse signals when a key is depressed. The detector generates a first detection signal during an interval between depression of the key and a time at which a counter reaches a predetermined value and then produces a second detection signal until the depressed key is released. The control waveform generator further comprises a capacitor whose terminal voltage is taken out as the control waveform, a first charging or discharging circuit responsive to the first detection signal for charging or discharging the capacitor, a second discharging or charging circuit responsive to the second detector signal for discharging or charging the capacitor, and a third discharging or charging circuit for discharging or charging the capacitor when the depressed key is released.

REFERENCES:
patent: 3897709 (1975-08-01), Hiyoshi et al.
patent: 3977291 (1976-08-01), Southard
patent: 4014238 (1977-03-01), Southard
patent: 4109208 (1978-08-01), Tomisawa et al.

Affiliated with

Also associated with

Rating

Control waveform generators for electronic musical instruments does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Control waveform generators for electronic musical instruments, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control waveform generators for electronic musical instruments will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1839466