Sound reproduction in portable electronic equipment

Details Sound reproduction in portable electronic equipment Sound reproduction in portable electronic equipment

2005-01-21

2010-02-23

Chin, Vivian (Department: 2614)

Electrical audio signal processing systems and devices

Circuitry combined with specific type microphone or loudspeaker

C381S116000, C381S335000, C455S149000, C455S350000, C455S569100, C379S433010, C379S433020

Reexamination Certificate

active

07668320

ABSTRACT:
The present invention is directed towards a portable electronic equipment (10) comprising a speaker (16) and a receiver (18), wherein the receiver (18) is damped while the speaker (16) is active to provide good sound reproduction.

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patent: 1 091 539 (2001-04-01), None
patent: 11-88483 (1999-03-01), None

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