Music – Instruments – Electrical musical tone generation
Patent
1992-02-14
1993-08-03
Witkowski, Stanley J.
Music
Instruments
Electrical musical tone generation
84738, 84DIG10, G10H 318, G10H 326
Patent
active
052331237
ABSTRACT:
A musical instrument such as a guitar including a structure such as a guitar body and a vibratory element such as one or more guitar strings mounted to the structure is provided with a pickup for detecting vibrating motion of the vibratory element and providing a pickup signal representing such vibration and having a predetermined phase relationship thereto. A driver is provided for applying a drive force to the vibratory element or string so that the drive force has a predetermined phase element relationship to a drive signal. A feedback circuit accepts the pickup signal and provides a drive signal to the driver in such fashion that the drive force supplied by the driver is substantially in phase with the vibration. Thus, the feedback circuit may be arranged to accept the pickup signal and convert the pickup signal to the drive signal so that, for at least some frequencies of the pickup signal, the drive signal differs in phase from the pickup signal. In a stringed instrument, the driver may be arranged to apply drive forces to the strings at a drive location remote from the ends of the strings in such a way that the drive force applied to each string is substantially independent of lateral displacement of the string.
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Author-The Institute of Electrical and Electronics Engineers, Inc., IEEE Standard Dictionary of Electrical and Electronics Terms, pp. 636-638.
Knotts Richard W.
Moore Steven M.
Rose Floyd D.
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