Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electromagnetic
Reexamination Certificate
2006-06-27
2006-06-27
Ni, Suhan (Department: 2646)
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Electromagnetic
C381S421000, C381S420000
Reexamination Certificate
active
07068807
ABSTRACT:
To realize a speaker device capable of significantly improving sound quality with a simple construction. The speaker device applies electromagnetic force to a voice coil based on a supplied audio signal, and generates a sound wave according to the audio signal by vibrating a vibratory plate fixed to the voice coil.
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Ni Suhan
Pendleton Dionne
Sony Corporation
Wolf Greenfield & Sacks P.C.
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