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US 8,559,657 B2Granted
Capacitor microphone
AssigneeKabushiki Kaisha Audio-Technica
InventorsHiroshi Akino, Satoshi Yoshino, Haruhito Shimura
Life of this patent
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Abstract
Diaphragms of a plurality of capacitor microphone units are arranged in the same plane and the capacitor microphone units are connected in series to make an output from an impedance converter connected to one capacitor microphone unit drives a ground side of another capacitor microphone unit connected to the impedance converter.
Claims5
A capacitor microphone comprising:
- an impedance converter;
- and
- a plurality of capacitor microphone units, each of said plurality of capacitor microphone units has a diaphragm,
- wherein each of said diaphragms is arranged to be in a same plane,
- wherein each of said plurality of capacitor microphone units is electrically connected in series in order to output a voltage from the impedance converter to one of said plurality of capacitor microphone units, and
- wherein said output voltage electrically drives a ground side of another of said plurality of capacitor microphone units also connected to the impedance converter.
3 more elements
A capacitor microphone comprising:
- a first capacitor microphone unit has a first extracting electrode connected to a first input terminal of a first impedance converter;
- a second capacitor microphone unit has a second extracting electrode connected to a second input terminal of a second impedance converter;
- a first diaphragm side of a first casing of the first capacitor microphone unit is connected to the ground;
- and
- a first output terminal of the first impedance converter is connected to a second casing at a second diaphragm side of the second capacitor microphone unit.
2 more elements
Dependencies are inferred from the claim text.