Speaker for super-high frequency range reproduction

Details Speaker for super-high frequency range reproduction Speaker for super-high frequency range reproduction

2006-07-18

2006-07-18

Ni, Suhan (Department: 2646)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electrostrictive, magnetostrictive, or piezoelectric

C381S423000, C381S430000

Reexamination Certificate

active

07079661

ABSTRACT:
A speaker is provided that is operable to reproduce ultrahigh frequencies. Specifically, the speaker outputs ultrahigh frequencies up to 100 kHz with stable sound pressure. The speaker may include a disk-shaped piezoelectric ceramic vibrator wherein a piezoelectric ceramic and a metal substrate are bonded; a dome-shaped diaphragm attached to the piezoelectric ceramic vibrator; and a panel that fixes an outer peripheral part of the piezoelectric ceramic vibrator.

REFERENCES:
patent: 4386241 (1983-05-01), Maeda
patent: 4414436 (1983-11-01), Sashida et al.
patent: 4558249 (1985-12-01), Lerch et al.
patent: 4654554 (1987-03-01), Kishi
patent: 2000-333295 (2000-11-01), None

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