Electroacoustic novelties

Details Electroacoustic novelties Electroacoustic novelties

1991-12-23

1994-05-03

Kuntz, Curtis

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electrostrictive, magnetostrictive, or piezoelectric

381 90, 40455, H04R 2500, H04R 102, G09F 2700

Patent

active

053095197

ABSTRACT:
An electroacoustic novelty, particularly to the brim on an article of headware, or to a flag, containing a piezoelectric polymer film, where means are electrically coupled with electrodes on the film for applying an audio-frequency signal voltage across the film to cause the film to vibrate and emit sound waves.

REFERENCES:
patent: 3629522 (1971-12-01), Richards
patent: 4597099 (1986-06-01), Sawafuji
patent: 4607747 (1986-08-01), Steiner
patent: 4703573 (1987-11-01), Montogmery et al.
patent: 4807294 (1989-02-01), Iwata et al.
patent: 5115472 (1992-05-01), Park et al.

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