Circuit for distorting an audio signal

Details Circuit for distorting an audio signal Circuit for distorting an audio signal

1981-05-29

1983-09-20

Rubinson, G. Z.

179 1M, 84 124, G10H 106

Patent

active

044058322

ABSTRACT:
Circuitry is provided for distorting an audio signal, useful in providing a "dirty" sound to an electric guitar simulating a vacuum tube amplification thereof. The circuit includes components for simultaneously changing the amount of distortion introduced by a clipping circuit and the amount of gain boost provided at a preselected narrow bandwidth. Addition of such gain boost leads both to increased clipping of the audio signal and to reduced frequency response, at both low and high frequencies. A separate volume control is provided for broad band gain adjustment. Independently operable control switches permit insertion or elimination of the distortion, and insertion or elimination of a brightness circuit boosting high frequency response of the circuit.

REFERENCES:
patent: 3835409 (1974-09-01), Laub
patent: 3973461 (1976-08-01), Jahns
patent: 4002994 (1977-01-01), Fender
patent: 4101840 (1978-07-01), Fricke et al.
patent: 4151477 (1979-04-01), Yokoyama
patent: 4180707 (1979-12-01), Moog
patent: 4194165 (1980-03-01), Skulski
patent: 4211893 (1980-07-01), Smith
Markus, John; Sourcebook of Electronic Circuits; McGraw-Hill, N.Y., 1968, p. 518.
Jung, Walter G.; IC OP-AMP Cookbook; Howard W. Sams & Co., Inc. Indianapolis, Ind., 1974; pp. 326-331.
Hobby Electronics; vol. 3, No. 5, Mar. 1981; pp. 54-56; "Guita Fuzz Box".
Practical Electronics; vol. 13, No. 1, p. 61, Jan. 1977; "Guitar Fuzz Unit" by J. White.
Elektor, Jul./Aug. 1980, pp. 7-58 to 7-59; "Sound Effects Generator".

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