NO326176B1 - Kretser og fremgangsmate for koding/dekoding av forsterkningsregulering (AGC) - Google Patents

Kretser og fremgangsmate for koding/dekoding av forsterkningsregulering (AGC) Download PDF

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Publication number
NO326176B1
NO326176B1 NO20002955A NO20002955A NO326176B1 NO 326176 B1 NO326176 B1 NO 326176B1 NO 20002955 A NO20002955 A NO 20002955A NO 20002955 A NO20002955 A NO 20002955A NO 326176 B1 NO326176 B1 NO 326176B1
Authority
NO
Norway
Prior art keywords
bits
gain
amplifier
frames
control bits
Prior art date
Application number
NO20002955A
Other languages
English (en)
Norwegian (no)
Other versions
NO20002955D0 (no
NO20002955L (no
Inventor
Wade Lyle Heimbigner
Louis D Oliveira
Iv James A Hutchison
Original Assignee
Qualcomm Inc
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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of NO20002955D0 publication Critical patent/NO20002955D0/no
Publication of NO20002955L publication Critical patent/NO20002955L/no
Publication of NO326176B1 publication Critical patent/NO326176B1/no

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/16—Vocoder architecture
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/18—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging
    • H03M1/181—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging in feedback mode, i.e. by determining the range to be selected from one or more previous digital output values
    • H03M1/183—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging in feedback mode, i.e. by determining the range to be selected from one or more previous digital output values the feedback signal controlling the gain of an amplifier or attenuator preceding the analogue/digital converter
    • H03M1/185—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging in feedback mode, i.e. by determining the range to be selected from one or more previous digital output values the feedback signal controlling the gain of an amplifier or attenuator preceding the analogue/digital converter the determination of the range being based on more than one digital output value, e.g. on a running average, a power estimation or the rate of change

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Analogue/Digital Conversion (AREA)
  • Dc Digital Transmission (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
NO20002955A 1997-12-12 2000-06-09 Kretser og fremgangsmate for koding/dekoding av forsterkningsregulering (AGC) NO326176B1 (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/989,743 US6233554B1 (en) 1997-12-12 1997-12-12 Audio CODEC with AGC controlled by a VOCODER
PCT/US1998/026532 WO1999030421A1 (en) 1997-12-12 1998-12-14 Audio codec with agc controlled by a vocoder

Publications (3)

Publication Number Publication Date
NO20002955D0 NO20002955D0 (no) 2000-06-09
NO20002955L NO20002955L (no) 2000-08-10
NO326176B1 true NO326176B1 (no) 2008-10-13

Family

ID=25535422

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20002955A NO326176B1 (no) 1997-12-12 2000-06-09 Kretser og fremgangsmate for koding/dekoding av forsterkningsregulering (AGC)

Country Status (16)

Country Link
US (1) US6233554B1 (ja)
EP (1) EP1038358B1 (ja)
JP (1) JP4298160B2 (ja)
KR (1) KR100610134B1 (ja)
CN (1) CN1130023C (ja)
AR (1) AR015495A1 (ja)
AU (1) AU744770B2 (ja)
BR (1) BR9813482A (ja)
CA (1) CA2313219C (ja)
DE (1) DE69827162T2 (ja)
ES (1) ES2230736T3 (ja)
HK (1) HK1036166A1 (ja)
IL (1) IL136546A0 (ja)
NO (1) NO326176B1 (ja)
WO (1) WO1999030421A1 (ja)
ZA (1) ZA9811353B (ja)

Families Citing this family (32)

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US6476745B1 (en) 1998-11-25 2002-11-05 Texas Instruments Incorporated Voice codec automatic gain control
US6252528B1 (en) * 1999-08-20 2001-06-26 Conexant Systems, Inc. System and method for variable gain coder-decoder
TW550948B (en) * 2001-07-04 2003-09-01 Leadtek Research Inc Audio/video IP camcorder
DE10216921A1 (de) * 2002-04-15 2003-10-23 Bosch Gmbh Robert Verfahren und Vorrichtung zum Auffüllen von Datenabschnitten sowie Bussystem
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
SG185134A1 (en) * 2003-05-28 2012-11-29 Dolby Lab Licensing Corp Method, apparatus and computer program for calculating and adjusting the perceived loudness of an audio signal
KR100827226B1 (ko) * 2003-12-01 2008-05-07 삼성전자주식회사 아날로그 음향 신호를 디지털 데이터로 변환하는 장치 및방법
JP4629971B2 (ja) * 2003-12-11 2011-02-09 株式会社半導体エネルギー研究所 非直線ａ／ｄ変換されたデジタル信号対応のｄ／ａ変換回路及びそれを内蔵した音声信号処理回路及び表示装置
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
AU2005299410B2 (en) 2004-10-26 2011-04-07 Dolby Laboratories Licensing Corporation Calculating and adjusting the perceived loudness and/or the perceived spectral balance of an audio signal
US7927617B2 (en) * 2005-04-18 2011-04-19 Basf Aktiengesellschaft Preparation comprising at least one conazole fungicide
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
US8144881B2 (en) 2006-04-27 2012-03-27 Dolby Laboratories Licensing Corporation Audio gain control using specific-loudness-based auditory event detection
AU2007309691B2 (en) 2006-10-20 2011-03-10 Dolby Laboratories Licensing Corporation Audio dynamics processing using a reset
US8521314B2 (en) * 2006-11-01 2013-08-27 Dolby Laboratories Licensing Corporation Hierarchical control path with constraints for audio dynamics processing
EP2168122B1 (en) * 2007-07-13 2011-11-30 Dolby Laboratories Licensing Corporation Audio processing using auditory scene analysis and spectral skewness
CN101911183A (zh) * 2008-01-11 2010-12-08 日本电气株式会社 信号分析控制、信号分析、信号控制系统、装置以及程序
US8665914B2 (en) * 2008-03-14 2014-03-04 Nec Corporation Signal analysis/control system and method, signal control apparatus and method, and program
JP5773124B2 (ja) * 2008-04-21 2015-09-02 日本電気株式会社 信号分析制御及び信号制御のシステム、装置、方法及びプログラム
US8140342B2 (en) * 2008-12-29 2012-03-20 Motorola Mobility, Inc. Selective scaling mask computation based on peak detection
CN102568480A (zh) * 2010-12-27 2012-07-11 深圳富泰宏精密工业有限公司 双模手机语音传输系统
CN102148607B (zh) * 2011-04-15 2016-03-30 昆腾微电子股份有限公司 用于放大器的增益控制装置和方法、电话机
US9124365B2 (en) * 2013-03-15 2015-09-01 Cellco Partnership Enhanced mobile device audio performance
US9425757B2 (en) * 2013-05-15 2016-08-23 Infineon Technologies Ag Apparatus and method for controlling an amplification gain of an amplifier, and a digitizer circuit and microphone assembly
CN105556837B (zh) 2013-09-12 2019-04-19 杜比实验室特许公司 用于各种回放环境的动态范围控制
US9620134B2 (en) * 2013-10-10 2017-04-11 Qualcomm Incorporated Gain shape estimation for improved tracking of high-band temporal characteristics
GB2547459B (en) 2016-02-19 2019-01-09 Imagination Tech Ltd Dynamic gain controller
GB2566164B (en) * 2016-02-19 2020-02-19 Imagination Tech Ltd Dynamic gain controller
CN106023998B (zh) * 2016-05-27 2019-12-13 北京视觉世界科技有限公司 摄像头音频输入装置、去噪方法和摄像头
CN111583945B (zh) * 2020-04-30 2023-04-25 抖音视界有限公司 用于处理音频的方法、装置、电子设备和计算机可读介质
CN117793077A (zh) * 2024-02-23 2024-03-29 中国电子科技集团公司第三十研究所 通信系统及其软融硬音量调节方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL84948A0 (en) * 1987-12-25 1988-06-30 D S P Group Israel Ltd Noise reduction system
JPH03132228A (ja) * 1989-10-18 1991-06-05 Victor Co Of Japan Ltd 直交変換信号符号化復号化方式
KR100227452B1 (ko) * 1994-10-04 1999-11-01 비센트 비.인그라시아 스펙트럼 확산 통신 시스템에서 코히런트 통신 수신을 위한 방법 및 장치
GB2297443B (en) 1995-01-26 1999-09-08 Sony Uk Ltd Amplifier

Also Published As

Publication number Publication date
KR100610134B1 (ko) 2006-08-09
NO20002955D0 (no) 2000-06-09
IL136546A0 (en) 2001-06-14
DE69827162T2 (de) 2005-10-20
EP1038358A1 (en) 2000-09-27
JP4298160B2 (ja) 2009-07-15
DE69827162D1 (de) 2004-11-25
ZA9811353B (en) 2000-10-11
WO1999030421A1 (en) 1999-06-17
BR9813482A (pt) 2000-11-14
US6233554B1 (en) 2001-05-15
CA2313219A1 (en) 1999-06-17
NO20002955L (no) 2000-08-10
AU1725499A (en) 1999-06-28
CA2313219C (en) 2007-05-29
AU744770B2 (en) 2002-03-07
ES2230736T3 (es) 2005-05-01
HK1036166A1 (en) 2001-12-21
EP1038358B1 (en) 2004-10-20
CN1130023C (zh) 2003-12-03
KR20010032999A (ko) 2001-04-25
AR015495A1 (es) 2001-05-02
JP2001526414A (ja) 2001-12-18
CN1291377A (zh) 2001-04-11

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