Speaker, speaker module, and electronic equipment using the...

Details Speaker, speaker module, and electronic equipment using the... Speaker, speaker module, and electronic equipment using the...

2006-03-28

2006-03-28

Tran, Sinh (Department: 2646)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S423000, C381S431000

Reexamination Certificate

active

07020302

ABSTRACT:
A loudspeaker comprising an enclosure31provided with a second diaphragm disposed at an opening, and at least one sound generator40coupled acoustically with the enclosure. The sound generator is provided with a first diaphragm27,wherein the second diaphragm has an area greater than an area of the first diaphragm. In the present invention, the shape of the enclosure, and the positioning and shape of the first and the second diaphragms can be designed at a designer's option. Thus a small-sized electronic apparatus can be obtained with a greater designing freedom, while a large-sized diaphragm prevents a decrease of generated sound pressure.

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