Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electromagnetic
Patent
1996-09-03
1999-01-19
Tran, Sinh
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Electromagnetic
381396, 381405, 381413, H04R 2500
Patent
active
058622420
ABSTRACT:
A speaker has a diaphragm of which plane shape as seen from a vibrating direction has a major axis and a minor axis, a band-shaped edge connected to the outer circumference of the diaphragm for holding so that the diaphragm may be free to vibrate, and a frame for holding the outer circumference of the edge, wherein a viscoelastic member is affixed to part of the edge and/or diaphragm.
REFERENCES:
patent: 5148492 (1992-09-01), Uzawa et al.
patent: 5664024 (1997-09-01), Furuta et al.
Furuta Akihiro
Iwasa Mikio
Sakai Kuniaki
Satoh Kazue
Takewa Hiroyuki
Matsushita Electric - Industrial Co., Ltd.
Tran Sinh
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