Music – Instruments – Electrical musical tone generation
Patent
1991-09-17
1993-04-20
Shoop, Jr., William M.
Music
Instruments
Electrical musical tone generation
84DIG24, 84730, 84743, G10H 318, H04R 1700
Patent
active
052044874
ABSTRACT:
An electro-mechanical pickup for a musical instrument having a plurality of strings. The pickup includes a core, a first piezoelectric transducer element connected in parallel with a second piezoelectric transducer element, and a two-conductor output lead. Using two piezoelectric transducer elements connected in parallel increases the output voltage and capacitance of the pickup compared with using a single piezoelectric transducer element. The core is elongated, and has a first face opposite a second face. The first piezoelectric transducer element includes first and second electrodes on opposite faces of a first piezoelectric film. The second piezoelectric transducer element includes third and fourth electrodes on opposite faces of a second piezoelectric film. The piezoelectric transducer elements are each responsive to more than one string of the musical instrument. The first piezoelectric transducer element is stacked on the core with the second electrode in contact with the first face of the core. The second piezoelectric tranducer element is stacked on the first piezoelectric transducer element with the third electrode in contact with the first electrode. The output lead is attached to the core, with one conductor electrically contacting the first electrode and the third electrode, and the other conductor electrically contacting the second electrode and the fourth electrode.
REFERENCES:
patent: 3325580 (1967-06-01), Barcus et al.
patent: 3624264 (1971-11-01), Lazarus
patent: 4314495 (1982-02-01), Baggs
patent: 4491051 (1985-01-01), Barcus
patent: 4727634 (1988-03-01), Fishman
patent: 4774867 (1988-10-01), Fishman
patent: 4944209 (1990-07-01), Fishman
patent: 5029375 (1991-07-01), Fishman
patent: 5042971 (1991-08-01), Ambrose
Kynar Piezo Film Technical Manual (Pennwalt Corporation, 1987), p. 43.
Kynar Piezo Film News, No. 1 (Pennwalt Corporation, 1987), p. 4.
Hardcastle Ian
Kim Helen
Shoop Jr. William M.
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