ATE492014T1 - Redundanter audio bitstrom und verfahren zur vearbeitung von audio bitströmen - Google Patents

Redundanter audio bitstrom und verfahren zur vearbeitung von audio bitströmen

Info

Publication number
ATE492014T1
ATE492014T1 AT06749340T AT06749340T ATE492014T1 AT E492014 T1 ATE492014 T1 AT E492014T1 AT 06749340 T AT06749340 T AT 06749340T AT 06749340 T AT06749340 T AT 06749340T AT E492014 T1 ATE492014 T1 AT E492014T1
Authority
AT
Austria
Prior art keywords
coded
decoding
information
audio bit
redundant
Prior art date
Application number
AT06749340T
Other languages
English (en)
Inventor
Tian Wang
Kazuhito Koishida
Hosam A Khalil
Xiaoqin Sun
Wei-Ge Chen
Original Assignee
Microsoft 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 Microsoft Corp filed Critical Microsoft Corp
Application granted granted Critical
Publication of ATE492014T1 publication Critical patent/ATE492014T1/de

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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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • 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
    • G10L19/005—Correction of errors induced by the transmission channel, if related to the coding algorithm
    • 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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/09—Long term prediction, i.e. removing periodical redundancies, e.g. by using adaptive codebook or pitch predictor
    • 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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/10—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a multipulse excitation
    • 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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] vocoders
    • 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
    • G10L2019/0001—Codebooks
    • G10L2019/0004—Design or structure of the codebook
    • G10L2019/0005—Multi-stage vector quantisation

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Computational Linguistics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Stereophonic System (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
AT06749340T 2005-05-31 2006-04-05 Redundanter audio bitstrom und verfahren zur vearbeitung von audio bitströmen ATE492014T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/142,605 US7177804B2 (en) 2005-05-31 2005-05-31 Sub-band voice codec with multi-stage codebooks and redundant coding
PCT/US2006/012686 WO2006130229A1 (en) 2005-05-31 2006-04-05 Sub-band voice codec with multi-stage codebooks and redundant coding

Publications (1)

Publication Number Publication Date
ATE492014T1 true ATE492014T1 (de) 2011-01-15

Family

ID=37464576

Family Applications (1)

Application Number Title Priority Date Filing Date
AT06749340T ATE492014T1 (de) 2005-05-31 2006-04-05 Redundanter audio bitstrom und verfahren zur vearbeitung von audio bitströmen

Country Status (18)

Country Link
US (4) US7177804B2 (de)
EP (2) EP1886306B1 (de)
JP (2) JP5123173B2 (de)
KR (1) KR101238583B1 (de)
CN (2) CN101189662B (de)
AT (1) ATE492014T1 (de)
AU (1) AU2006252965B2 (de)
BR (1) BRPI0610909A2 (de)
CA (1) CA2611829C (de)
DE (1) DE602006018908D1 (de)
ES (1) ES2358213T3 (de)
IL (1) IL187196A (de)
NO (1) NO339287B1 (de)
NZ (1) NZ563462A (de)
PL (1) PL1886306T3 (de)
RU (1) RU2418324C2 (de)
TW (1) TWI413107B (de)
WO (1) WO2006130229A1 (de)

Families Citing this family (105)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7315815B1 (en) * 1999-09-22 2008-01-01 Microsoft Corporation LPC-harmonic vocoder with superframe structure
US7698132B2 (en) * 2002-12-17 2010-04-13 Qualcomm Incorporated Sub-sampled excitation waveform codebooks
US20050004793A1 (en) * 2003-07-03 2005-01-06 Pasi Ojala Signal adaptation for higher band coding in a codec utilizing band split coding
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
US7668712B2 (en) * 2004-03-31 2010-02-23 Microsoft Corporation Audio encoding and decoding with intra frames and adaptive forward error correction
CN1989548B (zh) * 2004-07-20 2010-12-08 松下电器产业株式会社 语音解码装置及补偿帧生成方法
WO2006008817A1 (ja) * 2004-07-22 2006-01-26 Fujitsu Limited オーディオ符号化装置及びオーディオ符号化方法
US7177804B2 (en) * 2005-05-31 2007-02-13 Microsoft Corporation Sub-band voice codec with multi-stage codebooks and redundant coding
US7707034B2 (en) * 2005-05-31 2010-04-27 Microsoft Corporation Audio codec post-filter
US7831421B2 (en) * 2005-05-31 2010-11-09 Microsoft Corporation Robust decoder
KR101171098B1 (ko) * 2005-07-22 2012-08-20 삼성전자주식회사 혼합 구조의 스케일러블 음성 부호화 방법 및 장치
US20070058530A1 (en) * 2005-09-14 2007-03-15 Sbc Knowledge Ventures, L.P. Apparatus, computer readable medium and method for redundant data stream control
US7664091B2 (en) * 2005-10-03 2010-02-16 Motorola, Inc. Method and apparatus for control channel transmission and reception
KR100647336B1 (ko) * 2005-11-08 2006-11-23 삼성전자주식회사 적응적 시간/주파수 기반 오디오 부호화/복호화 장치 및방법
US8611300B2 (en) * 2006-01-18 2013-12-17 Motorola Mobility Llc Method and apparatus for conveying control channel information in OFDMA system
JP5117407B2 (ja) * 2006-02-14 2013-01-16 フランス・テレコム オーディオ符号化／復号化で知覚的に重み付けするための装置
JP5058152B2 (ja) * 2006-03-10 2012-10-24 パナソニック株式会社 符号化装置および符号化方法
KR100900438B1 (ko) * 2006-04-25 2009-06-01 삼성전자주식회사 음성 패킷 복구 장치 및 방법
DE102006022346B4 (de) * 2006-05-12 2008-02-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Informationssignalcodierung
US8712766B2 (en) * 2006-05-16 2014-04-29 Motorola Mobility Llc Method and system for coding an information signal using closed loop adaptive bit allocation
US9515843B2 (en) * 2006-06-22 2016-12-06 Broadcom Corporation Method and system for link adaptive Ethernet communications
EP2036204B1 (de) * 2006-06-29 2012-08-15 LG Electronics Inc. Verfahren und anordnung zur audiosignalverarbeitung
US9454974B2 (en) * 2006-07-31 2016-09-27 Qualcomm Incorporated Systems, methods, and apparatus for gain factor limiting
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
US8280728B2 (en) * 2006-08-11 2012-10-02 Broadcom Corporation Packet loss concealment for a sub-band predictive coder based on extrapolation of excitation waveform
US8024192B2 (en) 2006-08-15 2011-09-20 Broadcom Corporation Time-warping of decoded audio signal after packet loss
US7778307B2 (en) * 2006-10-04 2010-08-17 Motorola, Inc. Allocation of control channel for radio resource assignment in wireless communication systems
US20080084853A1 (en) 2006-10-04 2008-04-10 Motorola, Inc. Radio resource assignment in control channel in wireless communication systems
ATE512437T1 (de) * 2006-11-29 2011-06-15 Loquendo Spa Quellenabhängige codierung und decodierung mit mehreren codebüchern
US8688437B2 (en) 2006-12-26 2014-04-01 Huawei Technologies Co., Ltd. Packet loss concealment for speech coding
US8000961B2 (en) * 2006-12-26 2011-08-16 Yang Gao Gain quantization system for speech coding to improve packet loss concealment
FR2911228A1 (fr) * 2007-01-05 2008-07-11 France Telecom Codage par transformee, utilisant des fenetres de ponderation et a faible retard.
JP5190445B2 (ja) * 2007-03-02 2013-04-24 パナソニック株式会社 符号化装置および符号化方法
US8160872B2 (en) * 2007-04-05 2012-04-17 Texas Instruments Incorporated Method and apparatus for layered code-excited linear prediction speech utilizing linear prediction excitation corresponding to optimal gains
EP1981170A1 (de) * 2007-04-13 2008-10-15 Global IP Solutions (GIPS) AB Adaptive, skalierbare Paketverlustwiederherstellung
US20090006081A1 (en) * 2007-06-27 2009-01-01 Samsung Electronics Co., Ltd. Method, medium and apparatus for encoding and/or decoding signal
KR101403340B1 (ko) * 2007-08-02 2014-06-09 삼성전자주식회사 변환 부호화 방법 및 장치
CN101170554B (zh) * 2007-09-04 2012-07-04 萨摩亚商·繁星科技有限公司 资讯安全传递系统
US8422480B2 (en) * 2007-10-01 2013-04-16 Qualcomm Incorporated Acknowledge mode polling with immediate status report timing
KR101216098B1 (ko) * 2007-10-15 2012-12-26 연세대학교 산학협력단 신호 처리 방법 및 장치
US8423371B2 (en) * 2007-12-21 2013-04-16 Panasonic Corporation Audio encoder, decoder, and encoding method thereof
US8190440B2 (en) * 2008-02-29 2012-05-29 Broadcom Corporation Sub-band codec with native voice activity detection
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
JP4506870B2 (ja) * 2008-04-30 2010-07-21 ソニー株式会社 受信装置および受信方法、並びにプログラム
US20090319261A1 (en) * 2008-06-20 2009-12-24 Qualcomm Incorporated Coding of transitional speech frames for low-bit-rate applications
US20090319263A1 (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
US20100027524A1 (en) * 2008-07-31 2010-02-04 Nokia Corporation Radio layer emulation of real time protocol sequence number and timestamp
US8706479B2 (en) * 2008-11-14 2014-04-22 Broadcom Corporation Packet loss concealment for sub-band codecs
US8156530B2 (en) * 2008-12-17 2012-04-10 At&T Intellectual Property I, L.P. Method and apparatus for managing access plans
KR101622950B1 (ko) * 2009-01-28 2016-05-23 삼성전자주식회사 오디오 신호의 부호화 및 복호화 방법 및 그 장치
JP5576488B2 (ja) * 2009-09-29 2014-08-20 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 オーディオ信号デコーダ、オーディオ信号エンコーダ、アップミックス信号表現の生成方法、ダウンミックス信号表現の生成方法、及びコンピュータプログラム
KR20140032013A (ko) * 2009-10-07 2014-03-13 니폰덴신뎅와 가부시키가이샤 무선 통신 시스템, 무선 중계국 장치, 무선 단말국 장치 및 무선 통신 방법
CN102714034B (zh) * 2009-10-15 2014-06-04 华为技术有限公司 信号处理的方法、装置和系统
TWI484473B (zh) 2009-10-30 2015-05-11 Dolby Int Ab 用於從編碼位元串流擷取音訊訊號之節奏資訊、及估算音訊訊號之知覺顯著節奏的方法及系統
KR101771065B1 (ko) * 2010-04-14 2017-08-24 보이세지 코포레이션 씨이엘피 부호기 및 복호기에 사용하기 위한 가요성 및 스케일러블 조합형 이노베이션 코드북
US8660195B2 (en) * 2010-08-10 2014-02-25 Qualcomm Incorporated Using quantized prediction memory during fast recovery coding
CN103270553B (zh) 2010-08-12 2015-08-12 弗兰霍菲尔运输应用研究公司 对正交镜像滤波器式音频编译码器的输出信号的重新取样
JP5749462B2 (ja) * 2010-08-13 2015-07-15 株式会社Ｎｔｔドコモ オーディオ復号装置、オーディオ復号方法、オーディオ復号プログラム、オーディオ符号化装置、オーディオ符号化方法、及び、オーディオ符号化プログラム
AU2011311543B2 (en) 2010-10-07 2015-05-21 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V Apparatus and method for level estimation of coded audio frames in a bit stream domain
US9767822B2 (en) * 2011-02-07 2017-09-19 Qualcomm Incorporated Devices for encoding and decoding a watermarked signal
US9767823B2 (en) 2011-02-07 2017-09-19 Qualcomm Incorporated Devices for encoding and detecting a watermarked signal
US8976675B2 (en) * 2011-02-28 2015-03-10 Avaya Inc. Automatic modification of VOIP packet retransmission level based on the psycho-acoustic value of the packet
CN103443854B (zh) * 2011-04-08 2016-06-08 杜比实验室特许公司 用于混合来自两个编码位流的音频节目的元数据的自动配置
NO2669468T3 (de) * 2011-05-11 2018-06-02
EP2710589A1 (de) * 2011-05-20 2014-03-26 Google, Inc. Redundante kodiereinheit für audio-codec
US8909539B2 (en) * 2011-12-07 2014-12-09 Gwangju Institute Of Science And Technology Method and device for extending bandwidth of speech signal
US9275644B2 (en) * 2012-01-20 2016-03-01 Qualcomm Incorporated Devices for redundant frame coding and decoding
EP2891149A1 (de) * 2012-08-31 2015-07-08 Dolby Laboratories Licensing Corporation Verarbeitung von audioobjekten in codierten haupt- und nebenaudiosignalen
JP6173484B2 (ja) * 2013-01-08 2017-08-02 ドルビー・インターナショナル・アーベー 臨界サンプリングされたフィルタバンクにおけるモデル・ベースの予測
CN109102815B (zh) * 2013-01-21 2023-09-19 杜比实验室特许公司 编码装置和方法、转码方法和转码器、非暂态介质
CN107276551B (zh) * 2013-01-21 2020-10-02 杜比实验室特许公司 解码具有保留数据空间中的元数据容器的编码音频比特流
TWM487509U (zh) * 2013-06-19 2014-10-01 杜比實驗室特許公司 音訊處理設備及電子裝置
EP3011555B1 (de) 2013-06-21 2018-03-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Wiederherstellung eines sprachrahmens
PT3011554T (pt) * 2013-06-21 2019-10-24 Fraunhofer Ges Forschung Estimação de atraso de tom.
JP6476192B2 (ja) 2013-09-12 2019-02-27 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 多様な再生環境のためのダイナミックレンジ制御
CN116741189A (zh) 2013-09-12 2023-09-12 杜比实验室特许公司 用于下混合音频内容的响度调整
US10614816B2 (en) * 2013-10-11 2020-04-07 Qualcomm Incorporated Systems and methods of communicating redundant frame information
CN104751849B (zh) 2013-12-31 2017-04-19 华为技术有限公司 语音频码流的解码方法及装置
EP2922055A1 (de) * 2014-03-19 2015-09-23 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung, Verfahren und zugehöriges Computerprogramm zur Erzeugung eines Fehlerverschleierungssignals mit einzelnen Ersatz-LPC-Repräsentationen für individuelle Codebuchinformationen
CN107369454B (zh) * 2014-03-21 2020-10-27 华为技术有限公司 语音频码流的解码方法及装置
EP4336500B8 (de) 2014-04-17 2025-11-26 VoiceAge EVS LLC Verfahren, codierer und decodierer zur linearen prädiktiven codierung und decodierung von tonsignalen beim übergang zwischen rahmen mit verschiedenen abtastraten
EP2963649A1 (de) 2014-07-01 2016-01-06 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audioprozessor und Verfahren zur Verarbeitung eines Audiosignals mit horizontaler Phasenkorrektur
US9893835B2 (en) * 2015-01-16 2018-02-13 Real-Time Innovations, Inc. Auto-tuning reliability protocol in pub-sub RTPS systems
WO2017050398A1 (en) 2015-09-25 2017-03-30 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Encoder, decoder and methods for signal-adaptive switching of the overlap ratio in audio transform coding
EP3926626B1 (de) 2015-10-08 2024-05-22 Dolby International AB Geschichtete codierungs- und datenstruktur für komprimierte higher-order-ambisonics-schall- oder schallfelddarstellungen
AR106308A1 (es) 2015-10-08 2018-01-03 Dolby Int Ab Codificación en capas para representaciones de sonido o campo de sonido comprimidas
US10049682B2 (en) * 2015-10-29 2018-08-14 Qualcomm Incorporated Packet bearing signaling information indicative of whether to decode a primary coding or a redundant coding of the packet
US10049681B2 (en) * 2015-10-29 2018-08-14 Qualcomm Incorporated Packet bearing signaling information indicative of whether to decode a primary coding or a redundant coding of the packet
CN107025125B (zh) * 2016-01-29 2019-10-22 上海大唐移动通信设备有限公司 一种原始码流解码方法和系统
CN110476207B (zh) * 2017-01-10 2023-09-01 弗劳恩霍夫应用研究促进协会 音频解码器、音频编码器、提供解码的音频信号的方法、提供编码的音频信号的方法、音频流提供器和计算机介质
CN107564535B (zh) * 2017-08-29 2020-09-01 中国人民解放军理工大学 一种分布式低速语音通话方法
US10586546B2 (en) 2018-04-26 2020-03-10 Qualcomm Incorporated Inversely enumerated pyramid vector quantizers for efficient rate adaptation in audio coding
US10580424B2 (en) * 2018-06-01 2020-03-03 Qualcomm Incorporated Perceptual audio coding as sequential decision-making problems
US10734006B2 (en) 2018-06-01 2020-08-04 Qualcomm Incorporated Audio coding based on audio pattern recognition
US10957331B2 (en) * 2018-12-17 2021-03-23 Microsoft Technology Licensing, Llc Phase reconstruction in a speech decoder
WO2020164752A1 (en) 2019-02-13 2020-08-20 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio transmitter processor, audio receiver processor and related methods and computer programs
WO2020253941A1 (en) 2019-06-17 2020-12-24 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio encoder with a signal-dependent number and precision control, audio decoder, and related methods and computer programs
US10984808B2 (en) * 2019-07-09 2021-04-20 Blackberry Limited Method for multi-stage compression in sub-band processing
CN110910906A (zh) * 2019-11-12 2020-03-24 国网山东省电力公司临沂供电公司 基于电力内网的音频端点检测及降噪方法
EP4218140B1 (de) * 2020-09-28 2025-10-29 Eaton Intelligent Power Limited Effizienter codec für elektrische signale
CN113724716B (zh) * 2021-09-30 2024-02-23 北京达佳互联信息技术有限公司 语音处理方法和语音处理装置
US20230154474A1 (en) * 2021-11-17 2023-05-18 Agora Lab, Inc. System and method for providing high quality audio communication over low bit rate connection
CN116052645A (zh) * 2023-02-16 2023-05-02 上海哔哩哔哩科技有限公司 语音识别方法、装置、计算机设备及存储介质
CN117558283B (zh) * 2024-01-12 2024-03-22 杭州国芯科技股份有限公司 一种多路多标准的音频解码系统

Family Cites Families (129)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4969192A (en) * 1987-04-06 1990-11-06 Voicecraft, Inc. Vector adaptive predictive coder for speech and audio
US4802171A (en) * 1987-06-04 1989-01-31 Motorola, Inc. Method for error correction in digitally encoded speech
US4815134A (en) * 1987-09-08 1989-03-21 Texas Instruments Incorporated Very low rate speech encoder and decoder
CN1062963C (zh) * 1990-04-12 2001-03-07 多尔拜实验特许公司 用于产生高质量声音信号的解码器和编码器
US5664051A (en) * 1990-09-24 1997-09-02 Digital Voice Systems, Inc. Method and apparatus for phase synthesis for speech processing
KR960013206B1 (ko) * 1990-12-31 1996-10-02 박헌철 조립식 원적외선 사우나 욕실
US5255339A (en) 1991-07-19 1993-10-19 Motorola, Inc. Low bit rate vocoder means and method
US5657418A (en) * 1991-09-05 1997-08-12 Motorola, Inc. Provision of speech coder gain information using multiple coding modes
US5734789A (en) * 1992-06-01 1998-03-31 Hughes Electronics Voiced, unvoiced or noise modes in a CELP vocoder
JP2746039B2 (ja) * 1993-01-22 1998-04-28 日本電気株式会社 音声符号化方式
US20030075869A1 (en) * 1993-02-25 2003-04-24 Shuffle Master, Inc. Bet withdrawal casino game with wild symbol
US5706352A (en) 1993-04-07 1998-01-06 K/S Himpp Adaptive gain and filtering circuit for a sound reproduction system
US5673364A (en) * 1993-12-01 1997-09-30 The Dsp Group Ltd. System and method for compression and decompression of audio signals
US5615298A (en) 1994-03-14 1997-03-25 Lucent Technologies Inc. Excitation signal synthesis during frame erasure or packet loss
US5717823A (en) * 1994-04-14 1998-02-10 Lucent Technologies Inc. Speech-rate modification for linear-prediction based analysis-by-synthesis speech coders
JP3277705B2 (ja) * 1994-07-27 2002-04-22 ソニー株式会社 情報符号化装置及び方法、並びに情報復号化装置及び方法
TW271524B (de) * 1994-08-05 1996-03-01 Qualcomm Inc
US5699477A (en) * 1994-11-09 1997-12-16 Texas Instruments Incorporated Mixed excitation linear prediction with fractional pitch
US5751903A (en) * 1994-12-19 1998-05-12 Hughes Electronics Low rate multi-mode CELP codec that encodes line SPECTRAL frequencies utilizing an offset
SE504010C2 (sv) * 1995-02-08 1996-10-14 Ericsson Telefon Ab L M Förfarande och anordning för prediktiv kodning av tal- och datasignaler
FR2734389B1 (fr) 1995-05-17 1997-07-18 Proust Stephane Procede d'adaptation du niveau de masquage du bruit dans un codeur de parole a analyse par synthese utilisant un filtre de ponderation perceptuelle a court terme
US5668925A (en) * 1995-06-01 1997-09-16 Martin Marietta Corporation Low data rate speech encoder with mixed excitation
US5699485A (en) 1995-06-07 1997-12-16 Lucent Technologies Inc. Pitch delay modification during frame erasures
US5664055A (en) 1995-06-07 1997-09-02 Lucent Technologies Inc. CS-ACELP speech compression system with adaptive pitch prediction filter gain based on a measure of periodicity
US5774837A (en) * 1995-09-13 1998-06-30 Voxware, Inc. Speech coding system and method using voicing probability determination
EP0763818B1 (de) * 1995-09-14 2003-05-14 Kabushiki Kaisha Toshiba Verfahren und Filter zur Hervorbebung von Formanten
US5835495A (en) * 1995-10-11 1998-11-10 Microsoft Corporation System and method for scaleable streamed audio transmission over a network
TW321810B (de) * 1995-10-26 1997-12-01 Sony Co Ltd
IT1281001B1 (it) * 1995-10-27 1998-02-11 Cselt Centro Studi Lab Telecom Procedimento e apparecchiatura per codificare, manipolare e decodificare segnali audio.
US5819213A (en) * 1996-01-31 1998-10-06 Kabushiki Kaisha Toshiba Speech encoding and decoding with pitch filter range unrestricted by codebook range and preselecting, then increasing, search candidates from linear overlap codebooks
US5778335A (en) * 1996-02-26 1998-07-07 The Regents Of The University Of California Method and apparatus for efficient multiband celp wideband speech and music coding and decoding
US6041345A (en) * 1996-03-08 2000-03-21 Microsoft Corporation Active stream format for holding multiple media streams
SE506341C2 (sv) 1996-04-10 1997-12-08 Ericsson Telefon Ab L M Metod och anordning för rekonstruktion av en mottagen talsignal
JP3335841B2 (ja) * 1996-05-27 2002-10-21 日本電気株式会社 信号符号化装置
US5819298A (en) * 1996-06-24 1998-10-06 Sun Microsystems, Inc. File allocation tables with holes
JPH1078799A (ja) * 1996-09-04 1998-03-24 Fujitsu Ltd コードブック
US6570991B1 (en) 1996-12-18 2003-05-27 Interval Research Corporation Multi-feature speech/music discrimination system
US6317714B1 (en) 1997-02-04 2001-11-13 Microsoft Corporation Controller and associated mechanical characters operable for continuously performing received control data while engaging in bidirectional communications over a single communications channel
US6134518A (en) * 1997-03-04 2000-10-17 International Business Machines Corporation Digital audio signal coding using a CELP coder and a transform coder
US6131084A (en) 1997-03-14 2000-10-10 Digital Voice Systems, Inc. Dual subframe quantization of spectral magnitudes
US6292834B1 (en) * 1997-03-14 2001-09-18 Microsoft Corporation Dynamic bandwidth selection for efficient transmission of multimedia streams in a computer network
US6728775B1 (en) * 1997-03-17 2004-04-27 Microsoft Corporation Multiple multicasting of multimedia streams
KR100261253B1 (ko) * 1997-04-02 2000-07-01 윤종용 비트율 조절이 가능한 오디오 부호화/복호화 방법및 장치
IL120788A (en) 1997-05-06 2000-07-16 Audiocodes Ltd Systems and methods for encoding and decoding speech for lossy transmission networks
DE69840092D1 (de) * 1997-05-12 2008-11-20 Texas Instruments Inc Verfahren und vorrichtung für überrahmen-bitverteilung in einem diskret-mehrton-system (dmt)
US6009122A (en) * 1997-05-12 1999-12-28 Amati Communciations Corporation Method and apparatus for superframe bit allocation
US6058359A (en) * 1998-03-04 2000-05-02 Telefonaktiebolaget L M Ericsson Speech coding including soft adaptability feature
FI973873A7 (fi) * 1997-10-02 1999-04-03 Nokia Mobile Phones Ltd Puhekoodaus
US6263312B1 (en) * 1997-10-03 2001-07-17 Alaris, Inc. Audio compression and decompression employing subband decomposition of residual signal and distortion reduction
DE69840009D1 (de) * 1997-10-22 2008-10-23 Matsushita Electric Industrial Co Ltd Mehrstufige Vector Quantisierung für die Sprachkodierung
US6199037B1 (en) * 1997-12-04 2001-03-06 Digital Voice Systems, Inc. Joint quantization of speech subframe voicing metrics and fundamental frequencies
US5870412A (en) * 1997-12-12 1999-02-09 3Com Corporation Forward error correction system for packet based real time media
WO1999050828A1 (en) * 1998-03-30 1999-10-07 Voxware, Inc. Low-complexity, low-delay, scalable and embedded speech and audio coding with adaptive frame loss concealment
US6029126A (en) 1998-06-30 2000-02-22 Microsoft Corporation Scalable audio coder and decoder
US6493665B1 (en) * 1998-08-24 2002-12-10 Conexant Systems, Inc. Speech classification and parameter weighting used in codebook search
US6385573B1 (en) * 1998-08-24 2002-05-07 Conexant Systems, Inc. Adaptive tilt compensation for synthesized speech residual
US6330533B2 (en) * 1998-08-24 2001-12-11 Conexant Systems, Inc. Speech encoder adaptively applying pitch preprocessing with warping of target signal
US6480822B2 (en) 1998-08-24 2002-11-12 Conexant Systems, Inc. Low complexity random codebook structure
US6823303B1 (en) * 1998-08-24 2004-11-23 Conexant Systems, Inc. Speech encoder using voice activity detection in coding noise
US7072832B1 (en) * 1998-08-24 2006-07-04 Mindspeed Technologies, Inc. System for speech encoding having an adaptive encoding arrangement
GB9820655D0 (en) * 1998-09-22 1998-11-18 British Telecomm Packet transmission
FR2784218B1 (fr) 1998-10-06 2000-12-08 Thomson Csf Procede de codage de la parole a bas debit
US6438136B1 (en) * 1998-10-09 2002-08-20 Microsoft Corporation Method for scheduling time slots in a communications network channel to support on-going video transmissions
US6289297B1 (en) * 1998-10-09 2001-09-11 Microsoft Corporation Method for reconstructing a video frame received from a video source over a communication channel
JP4359949B2 (ja) 1998-10-22 2009-11-11 ソニー株式会社 信号符号化装置及び方法、並びに信号復号装置及び方法
US6310915B1 (en) * 1998-11-20 2001-10-30 Harmonic Inc. Video transcoder with bitstream look ahead for rate control and statistical multiplexing
US6226606B1 (en) * 1998-11-24 2001-05-01 Microsoft Corporation Method and apparatus for pitch tracking
US6456964B2 (en) * 1998-12-21 2002-09-24 Qualcomm, Incorporated Encoding of periodic speech using prototype waveforms
US6311154B1 (en) * 1998-12-30 2001-10-30 Nokia Mobile Phones Limited Adaptive windows for analysis-by-synthesis CELP-type speech coding
US6499060B1 (en) * 1999-03-12 2002-12-24 Microsoft Corporation Media coding for loss recovery with remotely predicted data units
US6377915B1 (en) * 1999-03-17 2002-04-23 Yrp Advanced Mobile Communication Systems Research Laboratories Co., Ltd. Speech decoding using mix ratio table
US6460153B1 (en) * 1999-03-26 2002-10-01 Microsoft Corp. Apparatus and method for unequal error protection in multiple-description coding using overcomplete expansions
US6952668B1 (en) 1999-04-19 2005-10-04 At&T Corp. Method and apparatus for performing packet loss or frame erasure concealment
US7117156B1 (en) 1999-04-19 2006-10-03 At&T Corp. Method and apparatus for performing packet loss or frame erasure concealment
DE19921122C1 (de) 1999-05-07 2001-01-25 Fraunhofer Ges Forschung Verfahren und Vorrichtung zum Verschleiern eines Fehlers in einem codierten Audiosignal und Verfahren und Vorrichtung zum Decodieren eines codierten Audiosignals
DE59908889D1 (de) * 1999-06-18 2004-04-22 Alcatel Sa Gemeinsame Quellen- und Kanalcodierung
US6633841B1 (en) 1999-07-29 2003-10-14 Mindspeed Technologies, Inc. Voice activity detection speech coding to accommodate music signals
US6434247B1 (en) 1999-07-30 2002-08-13 Gn Resound A/S Feedback cancellation apparatus and methods utilizing adaptive reference filter mechanisms
US6721337B1 (en) * 1999-08-24 2004-04-13 Ibiquity Digital Corporation Method and apparatus for transmission and reception of compressed audio frames with prioritized messages for digital audio broadcasting
US6775649B1 (en) * 1999-09-01 2004-08-10 Texas Instruments Incorporated Concealment of frame erasures for speech transmission and storage system and method
US6505152B1 (en) * 1999-09-03 2003-01-07 Microsoft Corporation Method and apparatus for using formant models in speech systems
AU7486200A (en) * 1999-09-22 2001-04-24 Conexant Systems, Inc. Multimode speech encoder
US7315815B1 (en) 1999-09-22 2008-01-01 Microsoft Corporation LPC-harmonic vocoder with superframe structure
US6782360B1 (en) * 1999-09-22 2004-08-24 Mindspeed Technologies, Inc. Gain quantization for a CELP speech coder
US6772126B1 (en) * 1999-09-30 2004-08-03 Motorola, Inc. Method and apparatus for transferring low bit rate digital voice messages using incremental messages
US6313714B1 (en) * 1999-10-15 2001-11-06 Trw Inc. Waveguide coupler
US6510407B1 (en) * 1999-10-19 2003-01-21 Atmel Corporation Method and apparatus for variable rate coding of speech
US6826527B1 (en) * 1999-11-23 2004-11-30 Texas Instruments Incorporated Concealment of frame erasures and method
US6621935B1 (en) * 1999-12-03 2003-09-16 Microsoft Corporation System and method for robust image representation over error-prone channels
AU2547201A (en) * 2000-01-11 2001-07-24 Matsushita Electric Industrial Co., Ltd. Multi-mode voice encoding device and decoding device
GB2358558B (en) * 2000-01-18 2003-10-15 Mitel Corp Packet loss compensation method using injection of spectrally shaped noise
US6732070B1 (en) * 2000-02-16 2004-05-04 Nokia Mobile Phones, Ltd. Wideband speech codec using a higher sampling rate in analysis and synthesis filtering than in excitation searching
US6693964B1 (en) * 2000-03-24 2004-02-17 Microsoft Corporation Methods and arrangements for compressing image based rendering data using multiple reference frame prediction techniques that support just-in-time rendering of an image
KR100833222B1 (ko) * 2000-03-29 2008-05-28 삼성전자주식회사 멀티미디어 송수신 장치 및 방법
US6757654B1 (en) * 2000-05-11 2004-06-29 Telefonaktiebolaget Lm Ericsson Forward error correction in speech coding
JP2002118517A (ja) 2000-07-31 2002-04-19 Sony Corp 直交変換装置及び方法、逆直交変換装置及び方法、変換符号化装置及び方法、並びに復号装置及び方法
US6934678B1 (en) 2000-09-25 2005-08-23 Koninklijke Philips Electronics N.V. Device and method for coding speech to be recognized (STBR) at a near end
EP1199709A1 (de) 2000-10-20 2002-04-24 Telefonaktiebolaget Lm Ericsson Fehlerverdeckung in Bezug auf die Dekodierung von kodierten akustischen Signalen
US6968309B1 (en) * 2000-10-31 2005-11-22 Nokia Mobile Phones Ltd. Method and system for speech frame error concealment in speech decoding
EP1353323B1 (de) * 2000-11-27 2007-01-17 Nippon Telegraph and Telephone Corporation Verfahren, einrichtung und programm zum codieren und decodieren eines akustischen parameters und verfahren, einrichtung und programm zum codieren und decodieren von klängen
ATE319162T1 (de) * 2001-01-19 2006-03-15 Koninkl Philips Electronics Nv Breitband-signalübertragungssystem
US6614370B2 (en) 2001-01-26 2003-09-02 Oded Gottesman Redundant compression techniques for transmitting data over degraded communication links and/or storing data on media subject to degradation
US6754624B2 (en) * 2001-02-13 2004-06-22 Qualcomm, Inc. Codebook re-ordering to reduce undesired packet generation
ATE439666T1 (de) * 2001-02-27 2009-08-15 Texas Instruments Inc Verschleierungsverfahren bei verlust von sprachrahmen und dekoder dafer
US7151749B2 (en) * 2001-06-14 2006-12-19 Microsoft Corporation Method and System for providing adaptive bandwidth control for real-time communication
US6658383B2 (en) * 2001-06-26 2003-12-02 Microsoft Corporation Method for coding speech and music signals
US6941263B2 (en) * 2001-06-29 2005-09-06 Microsoft Corporation Frequency domain postfiltering for quality enhancement of coded speech
US6879955B2 (en) * 2001-06-29 2005-04-12 Microsoft Corporation Signal modification based on continuous time warping for low bit rate CELP coding
US7277554B2 (en) 2001-08-08 2007-10-02 Gn Resound North America Corporation Dynamic range compression using digital frequency warping
US7512535B2 (en) 2001-10-03 2009-03-31 Broadcom Corporation Adaptive postfiltering methods and systems for decoding speech
ATE392053T1 (de) * 2001-10-11 2008-04-15 Interdigital Tech Corp System und verfahren zur verwendung unbenutzter kapazität im datenfeld eines speziellen bursts
US6785645B2 (en) * 2001-11-29 2004-08-31 Microsoft Corporation Real-time speech and music classifier
US6934677B2 (en) * 2001-12-14 2005-08-23 Microsoft Corporation Quantization matrices based on critical band pattern information for digital audio wherein quantization bands differ from critical bands
US7027982B2 (en) * 2001-12-14 2006-04-11 Microsoft Corporation Quality and rate control strategy for digital audio
US6789123B2 (en) * 2001-12-28 2004-09-07 Microsoft Corporation System and method for delivery of dynamically scalable audio/video content over a network
US6647366B2 (en) * 2001-12-28 2003-11-11 Microsoft Corporation Rate control strategies for speech and music coding
CA2388439A1 (en) * 2002-05-31 2003-11-30 Voiceage Corporation A method and device for efficient frame erasure concealment in linear predictive based speech codecs
CA2388352A1 (en) 2002-05-31 2003-11-30 Voiceage Corporation A method and device for frequency-selective pitch enhancement of synthesized speed
DE602004004950T2 (de) * 2003-07-09 2007-10-31 Samsung Electronics Co., Ltd., Suwon Vorrichtung und Verfahren zum bitraten-skalierbaren Sprachkodieren und -dekodieren
US7792670B2 (en) * 2003-12-19 2010-09-07 Motorola, Inc. Method and apparatus for speech coding
US7356748B2 (en) 2003-12-19 2008-04-08 Telefonaktiebolaget Lm Ericsson (Publ) Partial spectral loss concealment in transform codecs
ATE396537T1 (de) * 2004-01-19 2008-06-15 Nxp Bv System für die audiosignalverarbeitung
US7668712B2 (en) 2004-03-31 2010-02-23 Microsoft Corporation Audio encoding and decoding with intra frames and adaptive forward error correction
US7362819B2 (en) 2004-06-16 2008-04-22 Lucent Technologies Inc. Device and method for reducing peaks of a composite signal
US7246037B2 (en) * 2004-07-19 2007-07-17 Eberle Design, Inc. Methods and apparatus for an improved signal monitor
US8332228B2 (en) * 2005-04-01 2012-12-11 Qualcomm Incorporated Systems, methods, and apparatus for anti-sparseness filtering
US7831421B2 (en) * 2005-05-31 2010-11-09 Microsoft Corporation Robust decoder
US7707034B2 (en) 2005-05-31 2010-04-27 Microsoft Corporation Audio codec post-filter
US7177804B2 (en) 2005-05-31 2007-02-13 Microsoft Corporation Sub-band voice codec with multi-stage codebooks and redundant coding

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