Patent ID: 7162050

Claim:
A compound sound generator for an information equipment comprising: a case of the equipment, the case having an inner surface; a frame set in the case; a speaker and receiver provided in the frame, the speaker having a first diaphragm and the receiver having a second diaphragm; a first protector and a second protector, each having sound discharge holes, secured to the frame for protecting the first diaphragm and the second diaphragm, respectively; a first back chamber behind the first diaphragm of the speaker and a second back chamber behind the second diaphragm of the receiver; annular spacers provided between the inner surface of the case and an outer surface of the first protector and between the inner surface of the case and an outer surface of the second protector so as to surround the sound discharge holes of both protectors; openings provided in the frame for the first back chamber and the second back chamber to communicate with the inside space of the case so as to discharge sounds generated in the first and the second back chambers into the inside space of the case; an annular baffle formed between the inner surface of the case an outer surface of the frame so as to divide the space in the case into a first space for the speaker and a second space for the receiver, thereby preventing the sound from one of the back chambers from mixing with the sound from the other one of back chambers.