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Publication numberWO2001008442 A3
Publication typeApplication
Application numberPCT/DE2000/001963
Publication date16 Aug 2001
Filing date15 Jun 2000
Priority date23 Jul 1999
Also published asDE19934747A1, WO2001008442A2
Publication numberPCT/2000/1963, PCT/DE/0/001963, PCT/DE/0/01963, PCT/DE/2000/001963, PCT/DE/2000/01963, PCT/DE0/001963, PCT/DE0/01963, PCT/DE0001963, PCT/DE001963, PCT/DE2000/001963, PCT/DE2000/01963, PCT/DE2000001963, PCT/DE200001963, WO 0108442 A3, WO 0108442A3, WO 2001/008442 A3, WO 2001008442 A3, WO 2001008442A3, WO-A3-0108442, WO-A3-2001008442, WO0108442 A3, WO0108442A3, WO2001/008442A3, WO2001008442 A3, WO2001008442A3
InventorsRoland Aubauer, Ralf Kern, Stefano Ambrosius Klinke
ApplicantSiemens Ag, Roland Aubauer, Ralf Kern, Stefano Ambrosius Klinke
Export CitationBiBTeX, EndNote, RefMan
External Links: Patentscope, Espacenet
Method and agc device for controlling the amplification of a microphone with an integrated amplifier with a working point which can be adjusted by external wiring
WO 2001008442 A3
Abstract
In order to control the amplification of a microphone with an integrated amplifier whereby the working point thereof can be adjusted by means of external wiring, so that no externally controllable amplifier or attenuator are required, the sensitivity of said microphone and or frequency response characteristic thereof is modified by means of a microphone supply voltage or a physical control variable which adjusts a microphone feed impedance.
Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US4617555 *17 Apr 198514 Oct 1986Data Distribution Devices, Inc.Receiver for audible alarm
US5862238 *11 Sep 199519 Jan 1999Starkey Laboratories, Inc.Hearing aid having input and output gain compression circuits
Classifications
International ClassificationH04R3/10, H03G3/00
Cooperative ClassificationH04R3/10, H03G3/004
European ClassificationH04R3/10, H03G3/00P
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