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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

Info

Publication number
WO2001008442A3
WO2001008442A3 PCT/DE2000/001963 DE0001963W WO2001008442A3 WO 2001008442 A3 WO2001008442 A3 WO 2001008442A3 DE 0001963 W DE0001963 W DE 0001963W WO 2001008442 A3 WO2001008442 A3 WO 2001008442A3
Authority
WO
Grant status
Application
Patent type
Prior art keywords
microphone
amplifier
means
control
amplification
Prior art date
Application number
PCT/DE2000/001963
Other languages
German (de)
French (fr)
Other versions
WO2001008442A2 (en )
Inventor
Roland Aubauer
Ralf Kern
Stefano Ambrosius Klinke
Original Assignee
Siemens Ag
Roland Aubauer
Ralf Kern
Stefano Ambrosius Klinke
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Classifications

    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03GCONTROL OF AMPLIFICATION
    • H03G3/00Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/004Control by varying the supply voltage
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00Circuits for transducers, loudspeakers or microphones
    • H04R3/04Circuits for transducers, loudspeakers or microphones for correcting frequency response
    • H04R3/10Circuits for transducers, loudspeakers or microphones for correcting frequency response of variable resistance microphones

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.
PCT/DE2000/001963 1999-07-23 2000-06-15 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 WO2001008442A3 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE1999134747 DE19934747A1 (en) 1999-07-23 1999-07-23 Microphone amplification control method e.g. for telecommunications and consumer applications
DE19934747.6 1999-07-23

Publications (2)

Publication Number Publication Date
WO2001008442A2 true WO2001008442A2 (en) 2001-02-01
WO2001008442A3 true true WO2001008442A3 (en) 2001-08-16

Family

ID=7915908

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2000/001963 WO2001008442A3 (en) 1999-07-23 2000-06-15 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

Country Status (2)

Country Link
DE (1) DE19934747A1 (en)
WO (1) WO2001008442A3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2239843A1 (en) * 2009-04-08 2010-10-13 Nxp B.V. Sensitivity adapting transducer
EP2590434B1 (en) 2011-11-04 2016-01-27 AKG Acoustics GmbH Filter circuit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4617555A (en) * 1985-04-17 1986-10-14 Data Distribution Devices, Inc. Receiver for audible alarm
US5862238A (en) * 1995-09-11 1999-01-19 Starkey Laboratories, Inc. Hearing aid having input and output gain compression circuits

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4617555A (en) * 1985-04-17 1986-10-14 Data Distribution Devices, Inc. Receiver for audible alarm
US5862238A (en) * 1995-09-11 1999-01-19 Starkey Laboratories, Inc. Hearing aid having input and output gain compression circuits

Also Published As

Publication number Publication date Type
DE19934747A1 (en) 2001-01-25 application
WO2001008442A2 (en) 2001-02-01 application

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