Musical pick-up device with isolated noise cancellation coil

Details Musical pick-up device with isolated noise cancellation coil Musical pick-up device with isolated noise cancellation coil

1994-09-21

1996-10-29

Witkowski, Stanley J.

Music

Instruments

Electrical musical tone generation

G10H 318

Patent

active

055698727

ABSTRACT:
The present invention relates to a pick-up device for an electric musical instrument having strings. The pick-up device has a primary coil for sensing the vibration of the strings, and a secondary coil for noise cancellation. The secondary coil is isolated from the primary coil by, for example, an operational amplifier. The primary coil operates in a primary circuit, while the secondary coil operates in a noise cancellation circuit. The impedances of the primary circuit are selected to optimize the frequency response of the primary coil. The impedances of the noise cancellation circuit are selected to match the frequency response of the secondary coil to the frequency response of the primary coil.

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patent: 5189241 (1993-02-01), Nakamura
patent: 5376754 (1994-12-01), Stich
patent: 5378850 (1995-01-01), Tumura

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