EG23923A - Methods and devices for source controlled variablebit-rate widband speech coding - Google Patents

Methods and devices for source controlled variablebit-rate widband speech coding

Info

Publication number
EG23923A
EG23923A EGNA2005000110A EG23923A EG 23923 A EG23923 A EG 23923A EG NA2005000110 A EGNA2005000110 A EG NA2005000110A EG 23923 A EG23923 A EG 23923A
Authority
EG
Egypt
Prior art keywords
rate
wideband
amr
codec
mode
Prior art date
Application number
Other languages
English (en)
Inventor
Jelinek Milan
Original Assignee
Nokia Corp
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 Nokia Corp filed Critical Nokia Corp
Application granted granted Critical
Publication of EG23923A publication Critical patent/EG23923A/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
    • G10L19/173—Transcoding, i.e. converting between two coded representations avoiding cascaded coding-decoding
    • 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
    • G10L19/012—Comfort noise or silence coding
    • 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
    • G10L19/18—Vocoders using multiple modes
    • G10L19/24—Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding
    • 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/93—Discriminating between voiced and unvoiced parts of speech signals

Landscapes

  • Engineering & 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)
  • Quality & Reliability (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Studio Devices (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
EGNA2005000110 2002-10-11 2005-04-06 Methods and devices for source controlled variablebit-rate widband speech coding EG23923A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US41766702P 2002-10-11 2002-10-11
PCT/CA2003/001571 WO2004034379A2 (fr) 2002-10-11 2003-10-09 Procedes et dispositifs de codage vocal large bande en debit binaire variable commande par la source

Publications (1)

Publication Number Publication Date
EG23923A true EG23923A (en) 2007-12-30

Family

ID=32094059

Family Applications (1)

Application Number Title Priority Date Filing Date
EGNA2005000110 EG23923A (en) 2002-10-11 2005-04-06 Methods and devices for source controlled variablebit-rate widband speech coding

Country Status (15)

Country Link
US (1) US7203638B2 (fr)
EP (2) EP1550108A2 (fr)
JP (2) JP2006502426A (fr)
KR (2) KR100711280B1 (fr)
CN (2) CN1703736A (fr)
AT (1) ATE505786T1 (fr)
AU (2) AU2003278013A1 (fr)
BR (2) BR0315179A (fr)
CA (2) CA2501368C (fr)
DE (1) DE60336744D1 (fr)
EG (1) EG23923A (fr)
ES (1) ES2361154T3 (fr)
MY (2) MY134085A (fr)
RU (2) RU2331933C2 (fr)
WO (2) WO2004034379A2 (fr)

Families Citing this family (99)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7023880B2 (en) * 2002-10-28 2006-04-04 Qualcomm Incorporated Re-formatting variable-rate vocoder frames for inter-system transmissions
US7406096B2 (en) * 2002-12-06 2008-07-29 Qualcomm Incorporated Tandem-free intersystem voice communication
US8254372B2 (en) 2003-02-21 2012-08-28 Genband Us Llc Data communication apparatus and method
WO2004090870A1 (fr) 2003-04-04 2004-10-21 Kabushiki Kaisha Toshiba Procede et dispositif pour le codage ou le decodage de signaux audio large bande
US20060034481A1 (en) * 2003-11-03 2006-02-16 Farhad Barzegar Systems, methods, and devices for processing audio signals
US7450570B1 (en) 2003-11-03 2008-11-11 At&T Intellectual Property Ii, L.P. System and method of providing a high-quality voice network architecture
US8019449B2 (en) 2003-11-03 2011-09-13 At&T Intellectual Property Ii, Lp Systems, methods, and devices for processing audio signals
FR2867648A1 (fr) * 2003-12-10 2005-09-16 France Telecom Transcodage entre indices de dictionnaires multi-impulsionnels utilises en codage en compression de signaux numeriques
US8027265B2 (en) 2004-03-19 2011-09-27 Genband Us Llc Providing a capability list of a predefined format in a communications network
WO2005089055A2 (fr) 2004-03-19 2005-09-29 Nortel Networks Limited Procede pour communiquer des capacites de traitement sur une voie de communication
US7830864B2 (en) 2004-09-18 2010-11-09 Genband Us Llc Apparatus and methods for per-session switching for multiple wireline and wireless data types
US7729346B2 (en) 2004-09-18 2010-06-01 Genband Inc. UMTS call handling methods and apparatus
US8102872B2 (en) 2005-02-01 2012-01-24 Qualcomm Incorporated Method for discontinuous transmission and accurate reproduction of background noise information
US7983906B2 (en) * 2005-03-24 2011-07-19 Mindspeed Technologies, Inc. Adaptive voice mode extension for a voice activity detector
US20060262851A1 (en) * 2005-05-19 2006-11-23 Celtro Ltd. Method and system for efficient transmission of communication traffic
JP4948401B2 (ja) * 2005-05-31 2012-06-06 パナソニック株式会社 スケーラブル符号化装置およびスケーラブル符号化方法
US8483173B2 (en) 2005-05-31 2013-07-09 Genband Us Llc Methods and systems for unlicensed mobile access realization in a media gateway
JP2008546341A (ja) * 2005-06-18 2008-12-18 ノキア コーポレイション 非連続音声送信の際の擬似背景ノイズパラメータ適応送信のためのシステム及び方法
US7991272B2 (en) * 2005-07-11 2011-08-02 Lg Electronics Inc. Apparatus and method of processing an audio signal
KR101116363B1 (ko) 2005-08-11 2012-03-09 삼성전자주식회사 음성신호 분류방법 및 장치, 및 이를 이용한 음성신호부호화방법 및 장치
US7792150B2 (en) 2005-08-19 2010-09-07 Genband Us Llc Methods, systems, and computer program products for supporting transcoder-free operation in media gateway
US7835346B2 (en) * 2006-01-17 2010-11-16 Genband Us Llc Methods, systems, and computer program products for providing transcoder free operation (TrFO) and interworking between unlicensed mobile access (UMA) and universal mobile telecommunications system (UMTS) call legs using a media gateway
KR100790110B1 (ko) * 2006-03-18 2008-01-02 삼성전자주식회사 모폴로지 기반의 음성 신호 코덱 방법 및 장치
US8032370B2 (en) * 2006-05-09 2011-10-04 Nokia Corporation Method, apparatus, system and software product for adaptation of voice activity detection parameters based on the quality of the coding modes
US8260609B2 (en) 2006-07-31 2012-09-04 Qualcomm Incorporated Systems, methods, and apparatus for wideband encoding and decoding of inactive frames
US8725499B2 (en) * 2006-07-31 2014-05-13 Qualcomm Incorporated Systems, methods, and apparatus for signal change detection
US8135047B2 (en) * 2006-07-31 2012-03-13 Qualcomm Incorporated Systems and methods for including an identifier with a packet associated with a speech signal
US8848618B2 (en) * 2006-08-22 2014-09-30 Qualcomm Incorporated Semi-persistent scheduling for traffic spurts in wireless communication
EP2108193B1 (fr) 2006-12-28 2018-08-15 Genband US LLC Procedes, systemes, et produits de programme informatique destines a la conversion de descripteur d'insertion silencieux (sid)
US8279889B2 (en) * 2007-01-04 2012-10-02 Qualcomm Incorporated Systems and methods for dimming a first packet associated with a first bit rate to a second packet associated with a second bit rate
CN101246688B (zh) * 2007-02-14 2011-01-12 华为技术有限公司 一种对背景噪声信号进行编解码的方法、系统和装置
EP2118885B1 (fr) 2007-02-26 2012-07-11 Dolby Laboratories Licensing Corporation Enrichissement vocal en audio de loisir
ES2529292T3 (es) 2007-04-29 2015-02-18 Huawei Technologies Co., Ltd. Método de codificación y de decodificación
CN101320559B (zh) 2007-06-07 2011-05-18 华为技术有限公司 一种声音激活检测装置及方法
PL2165328T3 (pl) 2007-06-11 2018-06-29 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Kodowanie i dekodowanie sygnału audio zawierającego część impulsową i część stacjonarną
US8090588B2 (en) * 2007-08-31 2012-01-03 Nokia Corporation System and method for providing AMR-WB DTX synchronization
DE102008009719A1 (de) * 2008-02-19 2009-08-20 Siemens Enterprise Communications Gmbh & Co. Kg Verfahren und Mittel zur Enkodierung von Hintergrundrauschinformationen
CN101527140B (zh) * 2008-03-05 2011-07-20 上海摩波彼克半导体有限公司 第三代移动通信系统amr计算量化平均对数帧能量的方法
JP2011518345A (ja) * 2008-03-14 2011-06-23 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 スピーチライク信号及びノンスピーチライク信号のマルチモードコーディング
US9198017B2 (en) 2008-05-19 2015-11-24 Qualcomm Incorporated Infrastructure assisted discovery in a wireless peer-to-peer network
US9848314B2 (en) 2008-05-19 2017-12-19 Qualcomm Incorporated Managing discovery in a wireless peer-to-peer network
US20090319263A1 (en) * 2008-06-20 2009-12-24 Qualcomm Incorporated Coding of transitional speech frames for low-bit-rate applications
US20090319261A1 (en) * 2008-06-20 2009-12-24 Qualcomm Incorporated Coding of transitional speech frames for low-bit-rate applications
US8768690B2 (en) 2008-06-20 2014-07-01 Qualcomm Incorporated Coding scheme selection for low-bit-rate applications
CN102089817B (zh) 2008-07-11 2013-01-09 弗劳恩霍夫应用研究促进协会 用于计算频谱包络数目的装置与方法
MY154452A (en) 2008-07-11 2015-06-15 Fraunhofer Ges Forschung An apparatus and a method for decoding an encoded audio signal
JP5325293B2 (ja) * 2008-07-11 2013-10-23 フラウンホッファー−ゲゼルシャフト ツァ フェルダールング デァ アンゲヴァンテン フォアシュンク エー．ファオ 符号化されたオーディオ信号を復号化するための装置および方法
CN102150201B (zh) 2008-07-11 2013-04-17 弗劳恩霍夫应用研究促进协会 提供时间扭曲激活信号以及使用该时间扭曲激活信号对音频信号编码
WO2010070187A1 (fr) * 2008-12-19 2010-06-24 Nokia Corporation Appareil, procédé et programme informatique pour le codage
CN101599272B (zh) * 2008-12-30 2011-06-08 华为技术有限公司 基音搜索方法及装置
EP2237269B1 (fr) 2009-04-01 2013-02-20 Motorola Mobility LLC Dispositif et procédé de traitement d'un signal audio encodé
CN101931414B (zh) 2009-06-19 2013-04-24 华为技术有限公司 脉冲编码方法及装置、脉冲解码方法及装置
US8908541B2 (en) 2009-08-04 2014-12-09 Genband Us Llc Methods, systems, and computer readable media for intelligent optimization of digital signal processor (DSP) resource utilization in a media gateway
FR2954640B1 (fr) 2009-12-23 2012-01-20 Arkamys Procede d'optimisation de la reception stereo pour radio analogique et recepteur de radio analogique associe
US8423355B2 (en) * 2010-03-05 2013-04-16 Motorola Mobility Llc Encoder for audio signal including generic audio and speech frames
CN102299760B (zh) 2010-06-24 2014-03-12 华为技术有限公司 脉冲编解码方法及脉冲编解码器
KR101826331B1 (ko) 2010-09-15 2018-03-22 삼성전자주식회사 고주파수 대역폭 확장을 위한 부호화/복호화 장치 및 방법
EP2645366A4 (fr) 2010-11-22 2014-05-07 Ntt Docomo Inc Dispositif, méthode et programme de codage audio, et dispositif, méthode et programme de décodage audio
CA2827000C (fr) 2011-02-14 2016-04-05 Jeremie Lecomte Dispositif et procede de masquage d'erreurs dans le codage de la parole et audio unifie (usac) a faible retard
MX2013009304A (es) 2011-02-14 2013-10-03 Fraunhofer Ges Forschung Aparato y metodo para codificar una porcion de una señal de audio utilizando deteccion de un transiente y resultado de calidad.
TWI488177B (zh) 2011-02-14 2015-06-11 Fraunhofer Ges Forschung 使用頻譜域雜訊整形之基於線性預測的編碼方案
ES2639646T3 (es) 2011-02-14 2017-10-27 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Codificación y decodificación de posiciones de impulso de pistas de una señal de audio
CA2827335C (fr) * 2011-02-14 2016-08-30 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Codec audio utilisant une synthese du bruit durant des phases inactives
SG185519A1 (en) 2011-02-14 2012-12-28 Fraunhofer Ges Forschung Information signal representation using lapped transform
ES2529025T3 (es) 2011-02-14 2015-02-16 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Aparato y método para procesar una señal de audio decodificada en un dominio espectral
CN102737636B (zh) * 2011-04-13 2014-06-04 华为技术有限公司 一种音频编码方法及装置
US20140114653A1 (en) * 2011-05-06 2014-04-24 Nokia Corporation Pitch estimator
KR20140085453A (ko) * 2011-10-27 2014-07-07 엘지전자 주식회사 음성 신호 부호화 방법 및 복호화 방법과 이를 이용하는 장치
CN102543090B (zh) * 2011-12-31 2013-12-04 深圳市茂碧信息科技有限公司 一种应用于变速率语音和音频编码的码率自动控制系统
CN103200635B (zh) 2012-01-05 2016-06-29 华为技术有限公司 用户设备在无线网络控制器之间迁移的方法、装置及系统
US9236053B2 (en) * 2012-07-05 2016-01-12 Panasonic Intellectual Property Management Co., Ltd. Encoding and decoding system, decoding apparatus, encoding apparatus, encoding and decoding method
JP6127143B2 (ja) * 2012-08-31 2017-05-10 テレフオンアクチーボラゲット エルエム エリクソン（パブル） 音声アクティビティ検出のための方法及び装置
US8982702B2 (en) 2012-10-30 2015-03-17 Cisco Technology, Inc. Control of rate adaptive endpoints
CN108074579B (zh) * 2012-11-13 2022-06-24 三星电子株式会社 用于确定编码模式的方法以及音频编码方法
CN111145767B (zh) 2012-12-21 2023-07-25 弗劳恩霍夫应用研究促进协会 解码器及用于产生和处理编码频比特流的系统
BR112015014212B1 (pt) * 2012-12-21 2021-10-19 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Geração de um ruído de conforto com alta resolução espectro-temporal em transmissão descontínua de sinais de audio
CN103915097B (zh) * 2013-01-04 2017-03-22 中国移动通信集团公司 一种语音信号处理方法、装置和系统
US9208775B2 (en) * 2013-02-21 2015-12-08 Qualcomm Incorporated Systems and methods for determining pitch pulse period signal boundaries
US9263054B2 (en) 2013-02-21 2016-02-16 Qualcomm Incorporated Systems and methods for controlling an average encoding rate for speech signal encoding
CN105453173B (zh) 2013-06-21 2019-08-06 弗朗霍夫应用科学研究促进协会 利用改进的脉冲再同步化的似acelp隐藏中的自适应码本的改进隐藏的装置及方法
SG11201510463WA (en) 2013-06-21 2016-01-28 Fraunhofer Ges Forschung Apparatus and method for improved concealment of the adaptive codebook in acelp-like concealment employing improved pitch lag estimation
CN104347067B (zh) 2013-08-06 2017-04-12 华为技术有限公司 一种音频信号分类方法和装置
US9570093B2 (en) * 2013-09-09 2017-02-14 Huawei Technologies Co., Ltd. Unvoiced/voiced decision for speech processing
CN104517612B (zh) * 2013-09-30 2018-10-12 上海爱聊信息科技有限公司 基于amr-nb语音信号的可变码率编码器和解码器及其编码和解码方法
US10083708B2 (en) 2013-10-11 2018-09-25 Qualcomm Incorporated Estimation of mixing factors to generate high-band excitation signal
EP2980790A1 (fr) 2014-07-28 2016-02-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Appareil et procédé de sélection de mode de génération de bruit de confort
US9953655B2 (en) * 2014-09-29 2018-04-24 Qualcomm Incorporated Optimizing frequent in-band signaling in dual SIM dual active devices by comparing signal level (RxLev) and quality (RxQual) against predetermined thresholds
CN104299384A (zh) * 2014-10-13 2015-01-21 浙江大学 一种基于Zigbee异质传感器网络的环境监控系统
US20160323425A1 (en) * 2015-04-29 2016-11-03 Qualcomm Incorporated Enhanced voice services (evs) in 3gpp2 network
CN106328169B (zh) * 2015-06-26 2018-12-11 中兴通讯股份有限公司 一种激活音修正帧数的获取方法、激活音检测方法和装置
US10568143B2 (en) * 2017-03-28 2020-02-18 Cohere Technologies, Inc. Windowed sequence for random access method and apparatus
CN108737826B (zh) * 2017-04-18 2023-06-30 中兴通讯股份有限公司 一种视频编码的方法和装置
BR112020004883A2 (pt) * 2017-09-20 2020-09-15 Voiceage Corporation método e dispositivo para alocar um bit-budget entre subquadros em um codec celp
RU2670469C1 (ru) * 2017-10-19 2018-10-23 Акционерное общество "ОДК-Авиадвигатель" Способ защиты газотурбинного двигателя от многократных помпажей компрессора
CN113826161A (zh) * 2019-05-07 2021-12-21 沃伊斯亚吉公司 用于检测待编解码的声音信号中的起音以及对检测到的起音进行编解码的方法和设备
CN110619881B (zh) * 2019-09-20 2022-04-15 北京百瑞互联技术有限公司 一种语音编码方法、装置及设备
CN113519023A (zh) 2019-10-29 2021-10-19 苹果公司 具有压缩环境的音频编码
JP7332518B2 (ja) * 2020-03-30 2023-08-23 本田技研工業株式会社 会話支援装置、会話支援システム、会話支援方法およびプログラム
CN113611325B (zh) * 2021-04-26 2023-07-04 珠海市杰理科技股份有限公司 基于清浊音实现的语音信号变速方法、装置和音频设备

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW271524B (fr) * 1994-08-05 1996-03-01 Qualcomm Inc
FI991605A (fi) * 1999-07-14 2001-01-15 Nokia Networks Oy Menetelmä puhekodaukseen ja puhekoodaukseen tarvittavan laskentakapasi teetin vähentämiseksi ja verkkoelementti
JP2001067807A (ja) * 1999-08-25 2001-03-16 Sanyo Electric Co Ltd 音声再生装置
US6604070B1 (en) * 1999-09-22 2003-08-05 Conexant Systems, Inc. System of encoding and decoding speech signals
US6782360B1 (en) * 1999-09-22 2004-08-24 Mindspeed Technologies, Inc. Gain quantization for a CELP speech coder
US20020083461A1 (en) * 2000-11-22 2002-06-27 Hutcheson Stewart Douglas Method and system for providing interactive services over a wireless communications network
US6631139B2 (en) * 2001-01-31 2003-10-07 Qualcomm Incorporated Method and apparatus for interoperability between voice transmission systems during speech inactivity
JP4518714B2 (ja) * 2001-08-31 2010-08-04 富士通株式会社 音声符号変換方法

Also Published As

Publication number Publication date
MY138212A (en) 2009-05-29
AU2003278014A1 (en) 2004-05-04
CA2501369A1 (fr) 2004-04-22
RU2005113877A (ru) 2005-10-10
US20050267746A1 (en) 2005-12-01
KR100711280B1 (ko) 2007-04-25
EP1554718A2 (fr) 2005-07-20
US7203638B2 (en) 2007-04-10
CN1703737B (zh) 2013-05-15
RU2331933C2 (ru) 2008-08-20
WO2004034376A2 (fr) 2004-04-22
JP2006502427A (ja) 2006-01-19
RU2351907C2 (ru) 2009-04-10
AU2003278013A8 (en) 2004-05-04
BR0315216A (pt) 2005-08-16
KR20050049537A (ko) 2005-05-25
DE60336744D1 (de) 2011-05-26
EP1554718B1 (fr) 2011-04-13
MY134085A (en) 2007-11-30
CN1703736A (zh) 2005-11-30
EP1550108A2 (fr) 2005-07-06
CN1703737A (zh) 2005-11-30
AU2003278014A8 (en) 2004-05-04
WO2004034379A2 (fr) 2004-04-22
CA2501368C (fr) 2013-06-25
CA2501368A1 (fr) 2004-04-22
WO2004034376A3 (fr) 2004-06-10
RU2005113876A (ru) 2005-10-10
WO2004034379A3 (fr) 2004-12-23
KR20050049538A (ko) 2005-05-25
ATE505786T1 (de) 2011-04-15
JP2006502426A (ja) 2006-01-19
BR0315179A (pt) 2005-08-23
ES2361154T3 (es) 2011-06-14
AU2003278013A1 (en) 2004-05-04

Similar Documents

Publication Publication Date Title
EG23923A (en) Methods and devices for source controlled variablebit-rate widband speech coding
TW580691B (en) Method and apparatus for interoperability between voice transmission systems during speech inactivity
CN102592600B (zh) 嵌入式静默和背景噪声压缩
DE60012760D1 (de) Multimodaler sprachkodierer
Valin The speex codec manual version 1.2 beta 3
JPH09503874A (ja) 減少レート、可変レートの音声分析合成を実行する方法及び装置
MY152845A (en) Method and device for coding transition frames in speech signals
AU2001287969A1 (en) Codebook structure and search for speech coding
AU7830300A (en) Lpc-harmonic vocoder with superframe structure
JP2009239927A (ja) Ｃｄｍａ無線システム用可変ビットレート広帯域音声符号化時における効率のよい帯域内ディム・アンド・バースト（ｄｉｍ−ａｎｄ−ｂｕｒｓｔ）シグナリングとハーフレートマックス処理のための方法および装置
US6510409B1 (en) Intelligent discontinuous transmission and comfort noise generation scheme for pulse code modulation speech coders
US20080103765A1 (en) Encoder Delay Adjustment
US20050203733A1 (en) Method of comfort noise generation for speech communication
ATE322731T1 (de) Sprachsynthetisierer auf der basis von sprachkodierung mit veränderlicher bit-rate
Choudhary et al. Study and performance of amr codecs for gsm
AU2003258953A1 (en) Method and apparatus of generating a quality indicator
Lefebvre et al. Speech coders
CA2491623C (fr) Procede et dispositif d'information de signalisation dans la bande et de fonctionnement maximum en demi debit de codage vocal large bande a debit binaire variable pour des systemes cdma hertzien
AU2002225953A1 (en) Injection high frequency noise into pulse excitation for low bit rate celp
Wang et al. Transcoding Scheme between AMR-WB and VMR-WB
WO2002023533A3 (fr) Système améliorant le renforcement de hauteur tonale par sous-dictionnaires
JPH07135490A (ja) 音声検出器及び音声検出器を有する音声符号化器