Acoustic apparatus and telephone conversation apparatus

Details Acoustic apparatus and telephone conversation apparatus Acoustic apparatus and telephone conversation apparatus

2011-04-19

2011-04-19

Ni, Suhan (Department: 2614)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S421000, C381S431000

Reexamination Certificate

active

07929725

ABSTRACT:
An acoustic apparatus has permanent magnets2and3, which have north poles and south poles magnetized alternately in a stripe-like fashion, at the front and back of a diaphragm1, respectively; and has a conductor circuit4wired on the diaphragm1along the stripe-like poles of the permanent magnets2and3. This offers an advantage of being able to prevent an echo. The diaphragm1, permanent magnets2and3, conductor circuit4, spacer5, and iron plates6and7are installed in a baffle8.

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