Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Body contact wave transfer
Patent
1997-11-20
1999-02-23
Le, Huyen
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Body contact wave transfer
381168, 381174, H04R 2500
Patent
active
058752510
ABSTRACT:
An improved mechanism of vibration-type microphone, particularly relating to one that transmits voice signals by means of direct contact with the human body, comprising mainly of a buffer foam rubber, a microphone carrier, a capacitor microphone, a separating piece and an arc shaped vibration inducing plate that are accommodated in sequence in a main unit composed of a top cover and a bottom cover and connected with a fixing device, wherein at the center of the separating piece is a needle hole, at the center of the arc shaped vibration inducing plate is also a voice passage hole, with its edge inserted in the groove reserved between the top and bottom covers, and is clasped between the separating piece and the vibration membrane on the bottom cover, so the center part of the plate and the vibration membrane on the bottom cover form a minute bag shaped air chamber, so that when the subject invention is worn by a user and in contact with their flesh, and that when the vibration membrane takes up the voice frequency transmitted from the flesh, the arc shaped vibration inducing plate will reduce improper vibrations of voice frequency, meanwhile, the bag shaped air chamber will condense the air molecules that are transmitting the voice frequency, and allow them to pass through the voice passage hole on the arc shaped vibration inducing plate and the needle hole on the separating piece.
REFERENCES:
patent: 2260727 (1941-10-01), Sears et al.
patent: 4607383 (1986-08-01), Ingalls
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