PH25270A - Automatic gain control in a digital signal processor - Google Patents

Automatic gain control in a digital signal processor

Info

Publication number
PH25270A
PH25270A PH34198A PH34198A PH25270A PH 25270 A PH25270 A PH 25270A PH 34198 A PH34198 A PH 34198A PH 34198 A PH34198 A PH 34198A PH 25270 A PH25270 A PH 25270A
Authority
PH
Philippines
Prior art keywords
digital signal
signal processor
gain control
automatic gain
automatic
Prior art date
Application number
PH34198A
Other languages
English (en)
Inventor
Lynn Parker West
Original Assignee
Ibm
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 Ibm filed Critical Ibm
Publication of PH25270A publication Critical patent/PH25270A/en

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
    • 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
    • H03G3/3089—Control of digital or coded signals
PH34198A 1985-10-11 1986-08-29 Automatic gain control in a digital signal processor PH25270A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/786,911 US4747065A (en) 1985-10-11 1985-10-11 Automatic gain control in a digital signal processor

Publications (1)

Publication Number Publication Date
PH25270A true PH25270A (en) 1991-03-27

Family

ID=25139924

Family Applications (1)

Application Number Title Priority Date Filing Date
PH34198A PH25270A (en) 1985-10-11 1986-08-29 Automatic gain control in a digital signal processor

Country Status (11)

Country Link
US (1) US4747065A (ja)
EP (1) EP0218870B1 (ja)
JP (1) JPH073950B2 (ja)
KR (1) KR900009193B1 (ja)
CN (1) CN1008586B (ja)
AR (1) AR244901A1 (ja)
BR (1) BR8604622A (ja)
CA (1) CA1276994C (ja)
DE (1) DE3687684T2 (ja)
HK (1) HK90893A (ja)
PH (1) PH25270A (ja)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4785418A (en) * 1986-08-29 1988-11-15 International Business Machines Corporation Proportional automatic gain control
US4849711A (en) * 1987-09-04 1989-07-18 Digital Equipment Corporation Automatic gain control system
US5016205A (en) * 1989-04-27 1991-05-14 Motorola, Inc. Digital signal processor based AGC
NL8902613A (nl) * 1989-10-23 1991-05-16 Philips Nv Inrichting voor het uitlezen van op een informatiedrager opgetekende digitale informatie alsmede een piekdetector en een informatiedrager voor een dergelijke inrichting.
US5179528A (en) * 1989-11-22 1993-01-12 Texas Instruments Incorporated Signal processing system and method implementing a non-linear transfer function approximated by a piecewise linear transformation
US5029162A (en) * 1990-03-06 1991-07-02 Confertech International Automatic gain control using root-mean-square circuitry in a digital domain conference bridge for a telephone network
US5083304A (en) * 1990-09-28 1992-01-21 Motorola, Inc. Automatic gain control apparatus and method
US5142695A (en) * 1991-03-21 1992-08-25 Novatel Communications, Ltd. Cellular radio-telephone receiver employing improved technique for generating an indication of received signal strength
JP3076086B2 (ja) * 1991-06-28 2000-08-14 シャープ株式会社 音声合成装置用ポストフィルタ
US5267322A (en) * 1991-12-13 1993-11-30 Digital Sound Corporation Digital automatic gain control with lookahead, adaptive noise floor sensing, and decay boost initialization
US5479119A (en) * 1994-11-23 1995-12-26 Analog Devices, Inc. High speed active overvoltage detection and protection for overvoltage sensitive circuits
GB9513419D0 (en) * 1995-06-30 1995-09-06 Philips Electronics Uk Ltd Audio signal reproduction apparatus
US5694436A (en) * 1995-07-21 1997-12-02 Chaw Khong Co., Ltd. Gain control system for handling periodic noises
US5689551A (en) * 1995-10-17 1997-11-18 Thomson Consumer Electronics, Inc. Caller ID system with prescaler
US6026131A (en) * 1995-12-27 2000-02-15 Laurent; Souef Automatic gain control systems
US5956494A (en) * 1996-03-21 1999-09-21 Motorola Inc. Method, apparatus, and computer instruction for enabling gain control in a digital signal processor
DE19632902A1 (de) * 1996-08-16 1998-02-19 Bosch Gmbh Robert Verfahren zur automatischen Anpassung eines Empfängers an verschiedene Signalstärken und Empfänger zur Durchführung des Verfahrens
US5841820A (en) * 1996-10-07 1998-11-24 Zenith Electronics Corporation Data comparison AGC system for VSB receiver
FR2754663A1 (fr) * 1996-10-10 1998-04-17 Philips Electronics Nv Appareil telephonique muni de moyens de controle automatique de gain
GB2355607B (en) 1999-10-20 2002-01-16 Motorola Israel Ltd Digital speech processing system
US7130705B2 (en) * 2001-01-08 2006-10-31 International Business Machines Corporation System and method for microphone gain adjust based on speaker orientation
US7386074B1 (en) 2003-10-06 2008-06-10 Redpine Signals, Inc. Digital automatic gain control method and apparatus
JP4241443B2 (ja) * 2004-03-10 2009-03-18 ソニー株式会社 音声信号処理装置、音声信号処理方法
JP4783319B2 (ja) * 2007-03-27 2011-09-28 日本電信電話株式会社 ダイナミックレンジスケール回路
CN102118135B (zh) * 2009-12-31 2015-12-02 骅讯电子企业股份有限公司 信号自动增益调整方法与应用该方法的装置

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3562504A (en) * 1967-11-08 1971-02-09 Texas Instruments Inc Digital automatic gain control
US3969683A (en) * 1975-04-21 1976-07-13 Bell Telephone Laboratories, Incorporated Automatic level control circuit
JPS51140463A (en) * 1975-05-30 1976-12-03 Hitachi Ltd Automatic volume control system
US3996519A (en) * 1975-07-02 1976-12-07 The United States Of America As Represented By The Secretary Of The Navy Digital signal processor
US4161628A (en) * 1978-01-31 1979-07-17 Harris Corporation Technique for tracking amplitude fades for multi-amplitude signalling
US4213097A (en) * 1978-10-19 1980-07-15 Racal-Milgo, Inc. Hybrid automatic gain control circuit
US4191995A (en) * 1979-01-02 1980-03-04 Bell Telephone Laboratories, Incorporated Digital automatic gain control circuit
JPS55110303A (en) * 1979-02-15 1980-08-25 Mitsubishi Electric Corp Analog input adjustment system of ddc
US4282581A (en) * 1979-10-15 1981-08-04 Sperry Corporation Automatic overflow/imminent overflow detector
JPS5658306A (en) * 1979-10-18 1981-05-21 Nec Corp Automatic gain control circuit
US4464723A (en) * 1981-12-31 1984-08-07 Rca Corporation Digital gain control system
JPS58168314A (ja) * 1982-03-30 1983-10-04 Nec Corp 自動利得制御増巾回路
US4477698A (en) * 1982-09-07 1984-10-16 Melita Electronics Labs, Inc. Apparatus for detecting pick-up at a remote telephone set
US4554511A (en) * 1982-09-29 1985-11-19 Tetra Tech, Inc. Offset voltage correction network for instantaneous floating point amplifier
JPS5972222A (ja) * 1982-10-18 1984-04-24 Nec Corp Ａ／ｄ変換装置
US4499586A (en) * 1983-02-28 1985-02-12 Hazeltine Corporation Microprocessor controlled AGC
JPS60102049A (ja) * 1983-11-08 1985-06-06 Nippon Telegr & Teleph Corp <Ntt> 信号再生方式
US4623934A (en) * 1983-11-16 1986-11-18 Rockwell International Corporation AGC update apparatus and method of using same
US4553104A (en) * 1984-03-01 1985-11-12 Honeywell Inc. Method of compensating an amplifier system having a variable gain amplifier to achieve a constant overall system signal gain and an apparatus utilizing the same
US4551688A (en) * 1984-05-23 1985-11-05 Rockwell International Corporation Delay compensated automatic gain control
NL8403200A (nl) * 1984-10-22 1986-05-16 Philips Nv Lawaaiafhankelijke- en spraakonafhankelijke volumeregeling.

Also Published As

Publication number Publication date
KR900009193B1 (ko) 1990-12-24
BR8604622A (pt) 1987-05-26
CN86106498A (zh) 1987-06-10
KR870004569A (ko) 1987-05-11
EP0218870A2 (en) 1987-04-22
DE3687684D1 (de) 1993-03-18
CA1276994C (en) 1990-11-27
CN1008586B (zh) 1990-06-27
EP0218870A3 (en) 1989-05-03
AR244901A1 (es) 1993-11-30
JPS6288432A (ja) 1987-04-22
DE3687684T2 (de) 1993-08-19
JPH073950B2 (ja) 1995-01-18
US4747065A (en) 1988-05-24
EP0218870B1 (en) 1993-02-03
HK90893A (en) 1993-09-10

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