Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electrostrictive – magnetostrictive – or piezoelectric
Patent
1997-07-21
1998-10-27
Chang, Vivian
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Electrostrictive, magnetostrictive, or piezoelectric
381182, 381332, H04R 2500
Patent
active
058287663
ABSTRACT:
An acoustic speaker system according to this invention is provided that includes a conventional woofer, an electro-acoustic converter that functions as a tweeter, and a system enclosure. The converter includes an electro-acoustic transducer and a variable density hollow body. The transducer includes a piezoelectric sheet and two conductive electrodes. One electrode is disposed on each face of the sheet. Coatings are optionally disposed on each side of the transducer. The transducer is wrapped around a variable density body which may be filled with an acoustic dampening material. The acoustic speaker system enclosure includes a hollow ellipsoidal woofer enclosure with a portion of its outer surface for mounting an electro-acoustic converter, and optionally, a converter cover. The acoustic speaker system also includes an elastomeric cover that is fastened to the dome portion of a woofer.
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Alten Brett G.
Anthony Gallo Acoustics, Inc.
Chang Vivian
Ingerman Jeffrey H.
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