System consisting of a microphone and an amplifier

Details System consisting of a microphone and an amplifier System consisting of a microphone and an amplifier

2005-09-27

2005-09-27

Le, Huyen (Department: 2643)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Microphone capsule only

C381S191000, C381S113000

Reexamination Certificate

active

06950529

ABSTRACT:
Microphone/amplifier system in which the microphone comprises a case with an inlet opening, a diaphragm and a backplate, and the amplifier is arranged in the case and is coupled to the diaphragm/backplate system. In the case, the diaphragm forms a first partition between a first compartment containing the inlet opening to the surroundings and a second compartment accommodating the amplifier. According to the invention, the second compartment is divided by a second partition into a first and second subcompartment, while an opening of a predetermined volume is provided in the second partition, this volume having a magnitude such that air in the first subcompartment can be caused to vibrate only with sound vibrations of low frequencies. Through this feature, the frequency characteristic of the system can be influenced.

REFERENCES:
patent: 5255246 (1993-10-01), van Halteren
patent: 5319717 (1994-06-01), Holesha
patent: 6084972 (2000-07-01), van Halteren et al.
patent: 0 533 284 (1992-09-01), None
patent: 0 800 331 (1997-10-01), None
patent: 0 802 700 (1997-10-01), None

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