FR2544933B1 - Procede et dispositif de reglage du coefficient d'amplification d'un amplificateur - Google Patents

Procede et dispositif de reglage du coefficient d'amplification d'un amplificateur

Info

Publication number
FR2544933B1
FR2544933B1 FR8406344A FR8406344A FR2544933B1 FR 2544933 B1 FR2544933 B1 FR 2544933B1 FR 8406344 A FR8406344 A FR 8406344A FR 8406344 A FR8406344 A FR 8406344A FR 2544933 B1 FR2544933 B1 FR 2544933B1
Authority
FR
France
Prior art keywords
amplifier
adjusting
coefficient
amplifier coefficient
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
FR8406344A
Other languages
English (en)
Other versions
FR2544933A1 (fr
Inventor
Michael Kuhn
Herbert Piotrowski
Rudolf Geppert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of FR2544933A1 publication Critical patent/FR2544933A1/fr
Application granted granted Critical
Publication of FR2544933B1 publication Critical patent/FR2544933B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
    • H03G3/3026—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being discontinuously variable, e.g. controlled by switching

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Analogue/Digital Conversion (AREA)
  • Amplifiers (AREA)
FR8406344A 1983-04-22 1984-04-20 Procede et dispositif de reglage du coefficient d'amplification d'un amplificateur Expired FR2544933B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19833314570 DE3314570A1 (de) 1983-04-22 1983-04-22 Verfahren und anordnung zur einstellung der verstaerkung

Publications (2)

Publication Number Publication Date
FR2544933A1 FR2544933A1 (fr) 1984-10-26
FR2544933B1 true FR2544933B1 (fr) 1987-01-23

Family

ID=6197047

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8406344A Expired FR2544933B1 (fr) 1983-04-22 1984-04-20 Procede et dispositif de reglage du coefficient d'amplification d'un amplificateur

Country Status (7)

Country Link
US (1) US4543537A (fr)
JP (1) JPS59207730A (fr)
CA (1) CA1224546A (fr)
DE (1) DE3314570A1 (fr)
FR (1) FR2544933B1 (fr)
GB (1) GB2139025B (fr)
SE (1) SE460692B (fr)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2655168C3 (de) * 1976-12-06 1981-12-17 Siemens AG, 1000 Berlin und 8000 München Einstellbarer elektronischer Zeitschalter
JPS61117924A (ja) * 1984-11-13 1986-06-05 Sony Corp 画像補正装置
JPH027099A (ja) * 1988-06-27 1990-01-11 Toshiba Corp 過大音声検出装置
DE4207837A1 (de) * 1992-03-12 1993-09-16 Sel Alcatel Ag Verfahren und vorrichtung zur ueberpruefung und erlangung einer zugangsberechtigung
US5822718A (en) * 1997-01-29 1998-10-13 International Business Machines Corporation Device and method for performing diagnostics on a microphone
US6651040B1 (en) * 2000-05-31 2003-11-18 International Business Machines Corporation Method for dynamic adjustment of audio input gain in a speech system
US7130705B2 (en) * 2001-01-08 2006-10-31 International Business Machines Corporation System and method for microphone gain adjust based on speaker orientation
US7454331B2 (en) * 2002-08-30 2008-11-18 Dolby Laboratories Licensing Corporation Controlling loudness of speech in signals that contain speech and other types of audio material
KR101164937B1 (ko) * 2003-05-28 2012-07-12 돌비 레버러토리즈 라이쎈싱 코오포레이션 오디오 신호의 인식된 라우드니스를 계산 및 조정하는방법, 장치 및 컴퓨터 프로그램
CN101048935B (zh) 2004-10-26 2011-03-23 杜比实验室特许公司 控制音频信号的单位响度或部分单位响度的方法和设备
US8199933B2 (en) 2004-10-26 2012-06-12 Dolby Laboratories Licensing Corporation Calculating and adjusting the perceived loudness and/or the perceived spectral balance of an audio signal
BRPI0610719B1 (pt) * 2005-04-18 2015-11-24 Basf Ag preparação, processo para a produção da mesma, e, uso de preparações
TWI517562B (zh) 2006-04-04 2016-01-11 杜比實驗室特許公司 用於將多聲道音訊信號之全面感知響度縮放一期望量的方法、裝置及電腦程式
JP5185254B2 (ja) * 2006-04-04 2013-04-17 ドルビー ラボラトリーズ ライセンシング コーポレイション Ｍｄｃｔ領域におけるオーディオ信号音量測定と改良
AU2007243586B2 (en) 2006-04-27 2010-12-23 Dolby Laboratories Licensing Corporation Audio gain control using specific-loudness-based auditory event detection
WO2008051347A2 (fr) 2006-10-20 2008-05-02 Dolby Laboratories Licensing Corporation Traitement dynamique audio utilisant une réinitialisation
US8521314B2 (en) * 2006-11-01 2013-08-27 Dolby Laboratories Licensing Corporation Hierarchical control path with constraints for audio dynamics processing
CN101790758B (zh) * 2007-07-13 2013-01-09 杜比实验室特许公司 用于控制音频信号的信号处理的设备和方法
US8185387B1 (en) * 2011-11-14 2012-05-22 Google Inc. Automatic gain control
CN103227615B (zh) * 2012-01-31 2015-09-09 富士通株式会社 自动增益控制装置和方法、功率调整装置和无线发射系统

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3525948A (en) * 1966-03-25 1970-08-25 Sds Data Systems Inc Seismic amplifiers
FR2378401A1 (fr) * 1977-01-20 1978-08-18 Cit Alcatel Procede et dispositif pour adapter un signal analogique en vue de son codage numerique dans un codeur ayant une plage de codage donnee
JPS57146297A (en) * 1981-03-04 1982-09-09 Nippon Electric Co Voice processor
CA1197320A (fr) * 1981-10-30 1985-11-26 Joseph F. Schanne Methode et systeme de conversion analogique-numerique a adaptation
US4434439A (en) * 1982-02-22 1984-02-28 Rca Corporation Digital television AGC arrangement
US4449104A (en) * 1982-04-23 1984-05-15 General Electric Company Circuit for controlling the output level of an electronic device

Also Published As

Publication number Publication date
SE8402166D0 (sv) 1984-04-18
US4543537A (en) 1985-09-24
FR2544933A1 (fr) 1984-10-26
CA1224546A (fr) 1987-07-21
SE460692B (sv) 1989-11-06
GB8409892D0 (en) 1984-05-31
GB2139025A (en) 1984-10-31
GB2139025B (en) 1986-08-28
JPS59207730A (ja) 1984-11-24
DE3314570A1 (de) 1984-10-25
SE8402166L (sv) 1984-10-23

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Legal Events

Date Code Title Description
ST Notification of lapse