Noise-cancelling pickup for stringed instruments

Details Noise-cancelling pickup for stringed instruments Noise-cancelling pickup for stringed instruments

1989-05-16

1990-03-27

Witkowski, Stanley J.

Music

Instruments

Electrical musical tone generation

84727, G10H 318

Patent

active

049110543

ABSTRACT:
A noise-cancelling pickup for a stringed instrument uses two transducers to monitor different forces exerted by a vibratable string under tension. The first transducer is responsive to the music vibrations of the vibrating portion of the string but it is also responsive to variations of the string tension which are not related to the music vibrations of the string. The second transducer is mainly subjected to the variations of the string tension which are not related to the desirable music vibrations. The signals from the transducers are combined in and out-of-phase manner to produce a joint signal in which the spurious components corresponding to the variations of the string tension are significantly attenuated and possibly eliminated.

REFERENCES:
patent: 3073202 (1963-01-01), Evans
patent: 3137754 (1964-06-01), Evans
patent: 3453920 (1969-07-01), Scherer
patent: 3712951 (1973-01-01), Rickard
patent: 4314495 (1982-02-01), Baggs
patent: 4491051 (1985-01-01), Barcus
patent: 4584923 (1986-04-01), Minnick

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