Speaker

Details Speaker Speaker

2011-04-12

2011-04-12

Kuntz, Curtis (Department: 2614)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S400000, C381S417000

Reexamination Certificate

active

07925040

ABSTRACT:
A speaker may include a center pole and a voice coil bobbin having a bobbin that may include nonmagnetic and electric conductor layers and insulator layers disposed between the electric conductor layers. An electrostatic capacity, which is formed between the center pole and the voice coil bobbin, is detected and outputted as an electrical signal.

REFERENCES:
patent: 4924858 (1990-05-01), Katona
patent: 2003/0218391 (2003-11-01), Hirata
patent: 52-079644 (1977-07-01), None
patent: 53-012319 (1978-02-01), None
patent: 53-012320 (1978-02-01), None
patent: 53-012321 (1978-02-01), None
patent: 53012320 (1978-02-01), None

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