Music – Instruments
Patent
1983-07-11
1985-02-19
Witkowski, S. J.
Music
Instruments
84 116, G10H 318
Patent
active
044998090
ABSTRACT:
A transducer adapted to fretless musical instruments, instruments with non-conductive frets or non-conductive string wrapping, with two or more vibratable strings of magnetically permeable material. The strings pass through a magnetic field. Motion of the strings generates current in the strings. The magnetic field is provided by magnets shaped to concentrate the field across the signal generating portions of the strings. In a preferred embodiment, the coils are wound around the specially shaped magnets to utilize the same magnetic field used to generate current in the strings. Means are provided to passively mix both signals generated in the coil and signals generated in the strings. The circuitry electrically connected to the strings incorporates a method of balancing the uneven output caused by differences in string diameter. There is no special "return" wiring of the neck required. A wide variety of tonal differences are obtainable without active circuitry or signal processing. The signal level and impedance is such that it can be connected through a convenient length of cable to a standard musical instrument amplifier.
REFERENCES:
patent: 3297813 (1967-01-01), Cookerly et al.
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