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)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Computational Linguistics (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 (en) 2002-10-11 2003-10-09 Methods and devices for source controlled variable bit-rate wideband speech coding

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

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
WO2004075582A1 (en) 2003-02-21 2004-09-02 Nortel Networks Limited Data communication apparatus and method for establishing a codec-bypass connection
WO2004090870A1 (ja) * 2003-04-04 2004-10-21 Kabushiki Kaisha Toshiba 広帯域音声を符号化または復号化するための方法及び装置
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
US20060034481A1 (en) * 2003-11-03 2006-02-16 Farhad Barzegar Systems, methods, and devices for processing audio signals
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 (en) 2004-03-19 2005-09-29 Nortel Networks Limited Communicating processing capabilites along a communications path
US7729346B2 (en) 2004-09-18 2010-06-01 Genband Inc. UMTS call handling methods and apparatus
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
US8102872B2 (en) 2005-02-01 2012-01-24 Qualcomm Incorporated Method for discontinuous transmission and accurate reproduction of background noise information
EP1861846B1 (de) * 2005-03-24 2011-09-07 Mindspeed Technologies, Inc. Adaptive stimmenmodus-erweiterung für einen stimmenaktivitäts-detektor
US20060262851A1 (en) * 2005-05-19 2006-11-23 Celtro Ltd. Method and system for efficient transmission of communication traffic
US8483173B2 (en) 2005-05-31 2013-07-09 Genband Us Llc Methods and systems for unlicensed mobile access realization in a media gateway
DE602006015461D1 (de) * 2005-05-31 2010-08-26 Panasonic Corp Einrichtung und verfahren zur skalierbaren codierung
ES2629727T3 (es) * 2005-06-18 2017-08-14 Nokia Technologies Oy Sistema y método para la transmisión adaptativa de parámetros de ruido de confort durante la transmisión de habla discontinua
US8032368B2 (en) * 2005-07-11 2011-10-04 Lg Electronics Inc. Apparatus and method of encoding and decoding audio signals using hierarchical block swithcing and linear prediction coding
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
US8725499B2 (en) * 2006-07-31 2014-05-13 Qualcomm Incorporated Systems, methods, and apparatus for signal change detection
US8260609B2 (en) 2006-07-31 2012-09-04 Qualcomm Incorporated Systems, methods, and apparatus for wideband encoding and decoding of inactive frames
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
WO2008082605A1 (en) 2006-12-28 2008-07-10 Genband Inc. Methods, systems, and computer program products for silence insertion descriptor (sid) conversion
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
US8195454B2 (en) 2007-02-26 2012-06-05 Dolby Laboratories Licensing Corporation Speech enhancement in entertainment audio
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
US8706480B2 (en) 2007-06-11 2014-04-22 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Audio encoder for encoding an audio signal having an impulse-like portion and stationary portion, encoding methods, decoder, decoding method, and encoding audio signal
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
CN101971251B (zh) * 2008-03-14 2012-08-08 杜比实验室特许公司 像言语的信号和不像言语的信号的多模式编解码方法及装置
US9848314B2 (en) * 2008-05-19 2017-12-19 Qualcomm Incorporated Managing discovery in a wireless peer-to-peer network
US9198017B2 (en) 2008-05-19 2015-11-24 Qualcomm Incorporated Infrastructure assisted 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
CA2730232C (en) * 2008-07-11 2015-12-01 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. An apparatus and a method for decoding an encoded audio signal
MY154452A (en) * 2008-07-11 2015-06-15 Fraunhofer Ges Forschung An apparatus and a method for decoding an encoded audio signal
MX2011000367A (es) 2008-07-11 2011-03-02 Fraunhofer Ges Forschung Un aparato y un metodo para calcular una cantidad de envolventes espectrales.
PL2311033T3 (pl) 2008-07-11 2012-05-31 Fraunhofer Ges Forschung Dostarczanie sygnału aktywującego dopasowanie czasowe i kodowanie sygnału audio z jego użyciem
EP2380168A1 (de) * 2008-12-19 2011-10-26 Nokia Corporation Vorrichtung, verfahren und computerprogramm zur codierung
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 (de) 2009-04-01 2013-02-20 Motorola Mobility LLC Vorrichtung und Verfahren zur Verarbeitung eines enkodierten Audiodatensignals
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
CN104934036B (zh) 2010-11-22 2018-11-02 株式会社Ntt都科摩 音频编码装置、方法以及音频解码装置、方法
MX2013009345A (es) 2011-02-14 2013-10-01 Fraunhofer Ges Forschung Codificacion y decodificacion de posiciones de los pulsos de las pistas de una señal de audio.
JP5712288B2 (ja) 2011-02-14 2015-05-07 フラウンホーファー−ゲゼルシャフト・ツール・フェルデルング・デル・アンゲヴァンテン・フォルシュング・アインゲトラーゲネル・フェライン 重複変換を使用した情報信号表記
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
MX2013009346A (es) 2011-02-14 2013-10-01 Fraunhofer Ges Forschung Prediccion lineal basada en esquema de codificacion utilizando conformacion de ruido de dominio espectral.
CA2827266C (en) 2011-02-14 2017-02-28 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Apparatus and method for coding a portion of an audio signal using a transient detection and a quality result
PL2661745T3 (pl) 2011-02-14 2015-09-30 Fraunhofer Ges Forschung Urządzenie i sposób do ukrywania błędów w zunifikowanym kodowaniu mowy i audio
CA2903681C (en) * 2011-02-14 2017-03-28 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Audio codec using noise synthesis during inactive phases
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
WO2012153165A1 (en) * 2011-05-06 2012-11-15 Nokia Corporation A pitch estimator
EP2772909B1 (de) * 2011-10-27 2018-02-21 LG Electronics Inc. Verfahren zur kodierung eines sprachsignals
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
WO2014006837A1 (ja) * 2012-07-05 2014-01-09 パナソニック株式会社 符号化・復号化システム、復号化装置、符号化装置、及び符号化・復号化方法
WO2014035328A1 (en) 2012-08-31 2014-03-06 Telefonaktiebolaget L M Ericsson (Publ) Method and device for voice activity detection
US8982702B2 (en) 2012-10-30 2015-03-17 Cisco Technology, Inc. Control of rate adaptive endpoints
KR102561265B1 (ko) 2012-11-13 2023-07-28 삼성전자주식회사 부호화 모드 결정방법 및 장치, 오디오 부호화방법 및 장치와, 오디오 복호화방법 및 장치
JP6335190B2 (ja) 2012-12-21 2018-05-30 フラウンホーファー−ゲゼルシャフト・ツール・フェルデルング・デル・アンゲヴァンテン・フォルシュング・アインゲトラーゲネル・フェライン 低ビットレートで背景ノイズをモデル化するためのコンフォートノイズ付加
ES2588156T3 (es) * 2012-12-21 2016-10-31 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Generación de ruido de confort con alta resolución espectro-temporal en transmisión discontinua de señales 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
US9263054B2 (en) * 2013-02-21 2016-02-16 Qualcomm Incorporated Systems and methods for controlling an average encoding rate for speech signal encoding
US9208775B2 (en) * 2013-02-21 2015-12-08 Qualcomm Incorporated Systems and methods for determining pitch pulse period signal boundaries
TR201808890T4 (tr) * 2013-06-21 2018-07-23 Fraunhofer Ges Forschung Bir konuşma çerçevesinin yeniden yapılandırılması.
MX371425B (es) 2013-06-21 2020-01-29 Fraunhofer Ges Forschung Aparato y metodo para la ocultacion mejorada del libro de codigo adaptativo en la ocultacion similar a acelp mediante la utilizacion de una estimacion mejorada del retardo de tono.
CN106409310B (zh) 2013-08-06 2019-11-19 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 (de) 2014-07-28 2016-02-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und Verfahren zur Komfortgeräuscherzeugungs-Modusauswahl
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
US11276411B2 (en) * 2017-09-20 2022-03-15 Voiceage Corporation Method and device for allocating a bit-budget between sub-frames in a CELP CODEC
RU2670469C1 (ru) * 2017-10-19 2018-10-23 Акционерное общество "ОДК-Авиадвигатель" Способ защиты газотурбинного двигателя от многократных помпажей компрессора
WO2020223797A1 (en) * 2019-05-07 2020-11-12 Voiceage Corporation Methods and devices for detecting an attack in a sound signal to be coded and for coding the detected attack
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
WO2021086624A1 (en) 2019-10-29 2021-05-06 Qsinx Management Llc Audio encoding with compressed ambience
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 (de) * 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
US6782360B1 (en) * 1999-09-22 2004-08-24 Mindspeed Technologies, Inc. Gain quantization for a CELP speech coder
US6604070B1 (en) * 1999-09-22 2003-08-05 Conexant Systems, Inc. System of encoding and decoding speech signals
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
RU2351907C2 (ru) 2009-04-10
RU2005113877A (ru) 2005-10-10
CN1703737A (zh) 2005-11-30
JP2006502427A (ja) 2006-01-19
AU2003278013A1 (en) 2004-05-04
WO2004034376A3 (en) 2004-06-10
ATE505786T1 (de) 2011-04-15
AU2003278014A8 (en) 2004-05-04
DE60336744D1 (de) 2011-05-26
MY134085A (en) 2007-11-30
RU2331933C2 (ru) 2008-08-20
CN1703736A (zh) 2005-11-30
EP1554718A2 (de) 2005-07-20
WO2004034379A3 (en) 2004-12-23
EP1554718B1 (de) 2011-04-13
WO2004034376A2 (en) 2004-04-22
BR0315179A (pt) 2005-08-23
CA2501369A1 (en) 2004-04-22
MY138212A (en) 2009-05-29
JP2006502426A (ja) 2006-01-19
WO2004034379A2 (en) 2004-04-22
EP1550108A2 (de) 2005-07-06
ES2361154T3 (es) 2011-06-14
KR20050049538A (ko) 2005-05-25
CA2501368A1 (en) 2004-04-22
KR100711280B1 (ko) 2007-04-25
US7203638B2 (en) 2007-04-10
KR20050049537A (ko) 2005-05-25
CA2501368C (en) 2013-06-25
CN1703737B (zh) 2013-05-15
BR0315216A (pt) 2005-08-16
AU2003278014A1 (en) 2004-05-04
AU2003278013A8 (en) 2004-05-04
US20050267746A1 (en) 2005-12-01
RU2005113876A (ru) 2005-10-10

Similar Documents

Publication Publication Date Title
EG23923A (en) Methods and devices for source controlled variablebit-rate widband speech coding
CN102592600B (zh) 嵌入式静默和背景噪声压缩
JP4778010B2 (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
ATE272885T1 (de) Multimodaler sprachkodierer
EP1520271B1 (de) Methode und vorrichtung zur effizienten in-band dim-und burst signalisierung und halbraten maximalbetrieb in variabler bitraten kodierung für cdma mobilfunk-systeme
AU2002235512A1 (en) Method and apparatus for interoperability between voice transmission systems during speech inactivity
Valin The speex codec manual version 1.2 beta 3
MX2009004427A (es) Metodo y dispositivo para codificar cuadros de transicion en señales de habla.
ATE344519T1 (de) Codebuchstruktur und suchverfahren für die sprachkodierung
AU2013366552B2 (en) Comfort noise addition for modeling background noise at low bit-rates
AU7830300A (en) Lpc-harmonic vocoder with superframe structure
JP2006502427A5 (de)
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
Lefebvre et al. Speech coders
Wang et al. Transcoding Scheme between AMR-WB and VMR-WB
WO2002023533A3 (en) System for improved use of pitch enhancement with subcodebooks
JPH07135490A (ja) 音声検出器及び音声検出器を有する音声符号化器