Dual diaphragm speaker

Details Dual diaphragm speaker Dual diaphragm speaker

2006-05-02

2006-05-02

Le, Huyen (Department: 2646)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electrostrictive, magnetostrictive, or piezoelectric

C381S089000, C381S333000, C381S388000

Reexamination Certificate

active

07039206

ABSTRACT:
A dual diaphragm speaker comprising first and second diaphragms operating in accordance with the piezoelectric effect, the diaphragms being arranged to be driven in opposite phase with respect to one another so as to cancel out non-linearities. The speaker is made transparent and mounted over the display panel of a mobile telephone.

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