Guitar synthesizer

Details Guitar synthesizer Guitar synthesizer

1980-05-15

1982-11-09

Truhe, J. V.

Music

Instruments

84454, 84DIG18, 84 103, 84 124, G10H 300

Patent

active

043578527

ABSTRACT:
A guitar synthesizer comprises a guitar portion and a synthesizer portion which are electrically connected to each other. The guitar portion includes strings stretched between a nut and a bridge and pickup means for detecting a string vibration for providing a guitar sound signal. The guitar sound signal is applied to the synthesizer portion. The synthesizer portion comprises a voltage controlled variable bandpass filter exhibiting a passband characteristic variable in at least two frequency regions of the guitar sound signal as a function of a control voltage. A frequency/voltage converter provides a control voltage representing the frequency of the output of the filter, to the variable bandpass filter, whereby the passband characteristic thereof is made adaptively and dominantly responsive to the frequency of the fundamental wave component included in the guitar sound signal and the fundamental wave component is extracted with accuracy from the guitar sound signal. The synthesizer portion comprises a fundamental wave signal processing unit responsive to the fundamental wave component for generating a fundamental wave associated signal having the same frequency as that of the fundamental wave component and an envelope signal generator responsive to the guitar sound signal for generating an envelope signal representing the envelope of the guitar sound signal. The fundamental wave associated signal is modulated with the envelope signal for synthesizing.

REFERENCES:
patent: 3916751 (1975-11-01), Stich
patent: 4045731 (1977-08-01), Tokunou et al.
patent: 4150253 (1979-04-01), Knoppel
patent: 4151775 (1979-05-01), Merriman
patent: 4193332 (1980-03-01), Richardson
patent: 4195544 (1980-04-01), Koike
patent: 4203338 (1980-05-01), Vidas
patent: 4300431 (1981-11-01), De Rocco
Lancaster, CMOS Cookbook, 1977, p. 200.

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