Music – Instruments
Patent
1974-08-21
1976-10-05
Witkowski, Stanley J.
Music
Instruments
84 116, G10H 308
Patent
active
039837785
ABSTRACT:
A variable reluctance pickup system for steel string musical instruments is described which provides a highly asymmetrical magnetic field for preferentially sensing and generating electrical signals responsive to string vibrations perpendicular to the string plane. The described pickup system includes individual magnetic circuits with pole pieces, and a sensing coil for each string. The pickup system further includes special planar poletip faces which modify the spatial configuration of the magnetic fields emanating from the polepieces to render the pickup system relatively insensitive to "bending" of a string from its normal quiescent position. The described pickup system is designed to provide electronically amplified musical instruments with tonal characteristics similar to the tonal characteristics of acoustic string instruments.
REFERENCES:
patent: 2293372 (1942-08-01), Vasilach
patent: 2911871 (1959-11-01), Schultz
patent: 3066567 (1962-12-01), Kelley, Jr.
patent: 3483303 (1969-12-01), Warner
patent: 3571483 (1971-03-01), Davidson
patent: 3588311 (1971-06-01), Zoller
patent: 3629483 (1971-12-01), Welch
patent: 3715446 (1973-02-01), Kosinski
Newhouse David E.
Witkowski Stanley J.
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