US 2006/0188126 A1 · Miniature multi-loudspeaker module

Abstract

A miniature multi-loudspeaker module comprising a housing including a magnetic circuit having magnetic means and a magnetically conducting body defining a magnetic field, and first and second coplanar diaphragm and coil assemblies, which are separately movable. The housing is attached to a front cover, which includes first and second sound outlet openings leading to the first and second diaphragms. Preferably, parts of the magnetic circuit can be shared by the two diaphragm and coil assemblies. Preferred embodiments have two diaphragm and coil assemblies that can be separately electrically terminated to enable stereo sound reproduction and can be operated out of phase to serve as a vibration source. Such modules may be utilized for providing stereo sound in, e.g. mobile phones. The front cover may also comprise a sound outlet opening. The receiver signal can be generated by the two diaphragms or by a separately movable third diaphragm and coil assembly.

Claims28

Dependent claims

Miniature multi-loudspeaker module, comprising:

a housing, including within the housing a magnetic circuit comprising magnetic means and a magnetically conducting body arranged to generate a magnetic field in one or more magnetic gaps;
a first diaphragm and coil assembly and a second diaphragm and coil assembly that are separately movable, wherein the first and second coils each comprises one or more gap portions positioned in the magnetic field, the first and second diaphragms extending in substantially the same plane;
and
first and second sound outlet openings arranged so as to transmit sound from the module in directions substantially parallel to a plane defined by the first and second diaphragms, the first and second sound outlet openings each being in acoustical connection with respective ones of the first and second diaphragms.

1 more element

Dependencies are inferred from the claim text.

Miniature multi-loudspeaker module

Life of this patent

Miniature multi-loudspeaker module

Life of this patent

Abstract

Claims28