Tcl Communication Technology Holdings Limited

T & a Mobile Phones Limited

Z124

Eric Menu

Jean-Christophe Villain

Stephane Dufosse

Stéphane Dufosse

Yves Lebaudour

Yves Le Baudour

The invention relates to a sound-reproducing transducer () connected to a printed circuit (). This transducer () has the shape of a hollow cylinder whose cylindrical wall () delimits two circular faces, one front face () and one rear face () that are opposed and planar. The transducer () comprises at least one diaphragm () that makes it possible to convert electric signals into sound waves and conversely. This diaphragm () is a circular membrane parallel to the front face () and rear face () of the transducer (). The diaphragm () delimits two distinct volumes in the transducer (), the first volume being bordered on one side by the circular face () of the transducer () and on the other by the diaphragm () while forming a front acoustic cavity (), and the second volume being bordered on one side by the circular face () of the transducer () and on the other by the diaphragm () while forming a rear acoustic cavity (). The invention is characterized in that the cylindrical wall () of the transducer () has at least one perforation ().

Sound-reproducing transducer

In a structural arrangement for radio communication terminals comprising a casing in which are disposed at least a first sound transducer having an earpiece function and a second sound transducer having a loudspeaker function, the two transducers being respectively connected to two opposite faces of a printed circuit card, and each transducer comprising at least one resonating membrane vibrating in a front acoustical cavity and a rear acoustical cavity. The rear acoustical cavities of the transducers communicate with each other via orifices formed in the printed circuit card to form a twin rear acoustical cavity.

Structural arrangement for a radio communication terminal incorporating a loudspeaker and an earpiece

Growing community of inventors

Paris, France

Eric Menu