Moving ribbon microphone

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Microphone capsule only

Reexamination Certificate

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Details

C381S399000, C381S426000

Reexamination Certificate

active

07430297

ABSTRACT:
A ribbon microphone includes a diaphragm made of an aluminum foil. To provide a corrosion resistance and a favorable electrical connection in the junction between the aluminum foil and backplates for a long time, a gold deposited film is formed on opposite surfaces of the diaphragm. Preferably, a gold deposited film is also formed on the inner surfaces of electrode plates attached to each end of the diaphragm.

REFERENCES:
patent: 3564163 (1971-02-01), Hobrough
patent: 4473723 (1984-09-01), Hobrough
patent: 5062140 (1991-10-01), Inanaga et al.
patent: 7136496 (2006-11-01), van Halteren et al.

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