Electronic musical instrument

Details Electronic musical instrument Electronic musical instrument

1977-03-29

1981-12-22

Truhe, J. V.

Music

Instruments

84 116, 84 119, 84 124, 84DIG9, 84DIG24, G10H 100, G10H 300

Patent

active

043064809

ABSTRACT:
An electronic musical instrument having a fret board and a plurality of conductive frets may be coupled to a resistance ladder of discrete resistive elements. A conductive wire or a plurality of such wires selectively making contact with at least one of the conductive frets forms, together with the resistance ladder, part of a tone generating circuit. The circuit includes an oscillator which generates a tone in response to the conductive fret with which the wire makes contact. The circuit may also include a wave shaping circuit which selectively alters the shape of the generated tone and through a series of gradations alters its operating characteristics from that of a full wave rectifier to a linear voltage follower. Another embodiment modulates the phase of the generated tone by exploiting the dynamic impedance of a diode. One or more unique pressure sensitive touch pads may be employed for a glissando effect and/or for volume and/or tone glides. The instrument includes a single chromatic semitone switch and may be tuned to any key by a variable control. The circuit may also include variable vibrato, timbrato and tremolo effects. Inclusion of an octave switch and variable tuning between frets is also possible.

REFERENCES:
patent: 2792738 (1957-05-01), Donahue
patent: 3609203 (1971-09-01), Adachi
patent: 3662641 (1972-05-01), Allen
patent: 3742114 (1973-06-01), Barkan
patent: 3795756 (1974-03-01), Suzuki
patent: 3842358 (1974-10-01), Frazier
patent: 3940693 (1976-02-01), Brown
patent: 3948137 (1976-04-01), Niinomi
patent: 3965789 (1976-06-01), Pearlman
Ward, Electronic Music Circuit Guidebook, 1975, pp. 154-158.
Frederiksen et al., "The LM3900 . . . ", in Linear Applications, vol. 1, published by National Semiconductor, p. AN72-23, Sep. 1972.
Foord, Voltage Controlled Oscillator, in Radio and Electronics Constructor, vol. 28, No. 10, pp. 590-595, May 1975.

Affiliated with

Also associated with

Rating

Electronic musical instrument does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electronic musical instrument, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electronic musical instrument will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2363097