WO2001008442A3 - 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 - Google Patents

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 Download PDF

Info

Publication number
WO2001008442A3
WO2001008442A3 PCT/DE2000/001963 DE0001963W WO0108442A3 WO 2001008442 A3 WO2001008442 A3 WO 2001008442A3 DE 0001963 W DE0001963 W DE 0001963W WO 0108442 A3 WO0108442 A3 WO 0108442A3
Authority
WO
WIPO (PCT)
Prior art keywords
microphone
amplification
adjusted
working point
external wiring
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
Application filed by Siemens Ag, Roland Aubauer, Ralf Kern, Stefano Ambrosius Klinke filed Critical Siemens Ag
Priority to AU59653/00A priority Critical patent/AU5965300A/en
Publication of WO2001008442A2 publication Critical patent/WO2001008442A2/en
Publication of WO2001008442A3 publication Critical patent/WO2001008442A3/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/004—Control by varying the supply voltage
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
    • H04R3/10—Circuits 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 WO2001008442A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU59653/00A AU5965300A (en) 1999-07-23 2000-06-15 Method and agc device for controlling the amplification of microphone with an integrated amplifier with a working point which can be adjusted by external wiring

Applications Claiming Priority (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 WO2001008442A2 (en) 2001-02-01
WO2001008442A3 true WO2001008442A3 (en) 2001-08-16

Family

ID=7915908

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2000/001963 WO2001008442A2 (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 (3)

Country Link
AU (1) AU5965300A (en)
DE (1) DE19934747A1 (en)
WO (1) WO2001008442A2 (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
AU5965300A (en) 2001-02-13
WO2001008442A2 (en) 2001-02-01
DE19934747A1 (en) 2001-01-25

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