Inductive location sensor system and electronic percussion syste

Details Inductive location sensor system and electronic percussion syste Inductive location sensor system and electronic percussion syste

1998-12-01

2000-11-21

Donels, Jeffrey

Music

Instruments

Electrical musical tone generation

84689, 84733, G01P 342, G10H 500

Patent

active

061506001

ABSTRACT:
A system and a method for sensing the location of a remote object relative to a base object involve integrating inductive loop antennas with variable loop density into the base object and utilizing the antennas to transmit energy to and receive energy from an LC resonant circuit that is integrated into the remote object. The amplitude of a signal generated by the inductive loop antennas in response to energy received from the LC circuit identifies the location of the LC circuit relative to the antennas. Preferably, the sensing system is integrated into an electronic percussion instrument, where the keys of the instrument are formed with overlapping inductive loop antennas and the mallets used to activate the keys are formed with LC resonant circuits integrated into the mallet heads. In an enhanced version of the instrument, each antenna can be driven at multiple frequencies and made responsive to frequency-specific mallets, thereby creating an instrument that has continuous responsiveness over at least one lateral dimension of each key.

REFERENCES:
patent: 1661058 (1928-02-01), Theremin
patent: 4524348 (1985-06-01), Lefkowitz
patent: 4980519 (1990-12-01), Mathews
patent: 5247261 (1993-09-01), Gershenfeld
patent: 5541358 (1996-07-01), Wheaton et al.
patent: 5567920 (1996-10-01), Watanabe et al.
patent: 5661470 (1997-08-01), Karr
patent: 5973318 (1999-10-01), Plesko

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