ZA9811353B - Audio codec with AGC controlled by a vocoder. - Google Patents

Audio codec with AGC controlled by a vocoder.

Info

Publication number
ZA9811353B
ZA9811353B ZA9811353A ZA9811353A ZA9811353B ZA 9811353 B ZA9811353 B ZA 9811353B ZA 9811353 A ZA9811353 A ZA 9811353A ZA 9811353 A ZA9811353 A ZA 9811353A ZA 9811353 B ZA9811353 B ZA 9811353B
Authority
ZA
South Africa
Prior art keywords
vocoder
audio codec
agc controlled
agc
controlled
Prior art date
Application number
ZA9811353A
Other languages
English (en)
Inventor
Wade L Heimbigner
Louis D Oliveira
James A Hutchison Iv
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 ZA9811353B publication Critical patent/ZA9811353B/xx

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)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (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)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Dc Digital Transmission (AREA)
  • Analogue/Digital Conversion (AREA)
ZA9811353A 1997-12-12 1998-12-10 Audio codec with AGC controlled by a vocoder. ZA9811353B (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
ZA9811353B true ZA9811353B (en) 2000-10-11

Family

ID=25535422

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA9811353A ZA9811353B (en) 1997-12-12 1998-12-10 Audio codec with AGC controlled by a vocoder.

Country Status (16)

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

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JP4486646B2 (ja) * 2003-05-28 2010-06-23 ドルビー・ラボラトリーズ・ライセンシング・コーポレーション オーディオ信号の感知音量を計算し調整する方法、装置及びコンピュータプログラム
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
JP5101292B2 (ja) 2004-10-26 2012-12-19 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 オーディオ信号の感知音量及び／又は感知スペクトルバランスの計算と調整
EA026063B1 (ru) * 2005-04-18 2017-02-28 Басф Се Сополимер, синтезированный из по меньшей мере трех различных моноэтиленненасыщенных мономеров
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
NO345590B1 (no) 2006-04-27 2021-05-03 Dolby Laboratories Licensing Corp Audioforsterkningsregulering ved bruk av spesifikk lydstyrkebasert hørehendelsesdeteksjon
BRPI0717484B1 (pt) 2006-10-20 2019-05-21 Dolby Laboratories Licensing Corporation Método e aparelho para processar um sinal de áudio
US8521314B2 (en) * 2006-11-01 2013-08-27 Dolby Laboratories Licensing Corporation Hierarchical control path with constraints for audio dynamics processing
ES2377719T3 (es) * 2007-07-13 2012-03-30 Dolby Laboratories Licensing Corporation Procesamiento de audio utilizando un análisis de escenas auditivas y oblicuidad espectral.
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
JP5668923B2 (ja) * 2008-03-14 2015-02-12 日本電気株式会社 信号分析制御システム及びその方法と、信号制御装置及びその方法と、プログラム
US8509092B2 (en) * 2008-04-21 2013-08-13 Nec Corporation System, apparatus, method, and program for signal analysis control and signal control
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
AU1725499A (en) 1999-06-28
CA2313219C (fr) 2007-05-29
NO20002955D0 (no) 2000-06-09
KR100610134B1 (ko) 2006-08-09
CN1291377A (zh) 2001-04-11
EP1038358B1 (fr) 2004-10-20
JP2001526414A (ja) 2001-12-18
BR9813482A (pt) 2000-11-14
NO326176B1 (no) 2008-10-13
KR20010032999A (ko) 2001-04-25
DE69827162T2 (de) 2005-10-20
DE69827162D1 (de) 2004-11-25
ES2230736T3 (es) 2005-05-01
IL136546A0 (en) 2001-06-14
JP4298160B2 (ja) 2009-07-15
AU744770B2 (en) 2002-03-07
US6233554B1 (en) 2001-05-15
NO20002955L (no) 2000-08-10
HK1036166A1 (en) 2001-12-21
EP1038358A1 (fr) 2000-09-27
CN1130023C (zh) 2003-12-03
WO1999030421A1 (fr) 1999-06-17
AR015495A1 (es) 2001-05-02
CA2313219A1 (fr) 1999-06-17

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