Apparatus for acoustic loading of a diaphragm

Details Apparatus for acoustic loading of a diaphragm Apparatus for acoustic loading of a diaphragm

2006-03-02

2009-12-29

Le, Huyen D (Department: 2614)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Having acoustic wave modifying structure

C381S337000, C381S340000

Reexamination Certificate

active

07639830

ABSTRACT:
An apparatus acoustic loading of a diaphragm is disclosed. The apparatus comprises a rear face having a shape corresponding to a shape of a compression side of the diaphragm, a front face opposite to the rear face along an axis of symmetry, and a plurality of voids formed between the rear face and the front face. The plurality of voids are arranged so that their intersection with rear face forms a plurality of inlets, the plurality of inlets defining a higher compression ratio in the proximity of a voice coil compared to a compression ratio defined in at least a portion of the remaining area of the diaphragm.

REFERENCES:
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M.C. Batsel and C.N. Reifsteck, Photophone and Test Equipment Division of RCA Manufacturing Co.; “Reproducing Equipment for Motion Picture Theatres”;RCA Review magazine; Jan. 1937.

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