FI956106A0 - Pienen nopeuden monimoodinen CELP-koodekki, joka käyttää taaksepäin ennustamista - Google Patents

Pienen nopeuden monimoodinen CELP-koodekki, joka käyttää taaksepäin ennustamista

Info

Publication number
FI956106A0
FI956106A0 FI956106A FI956106A FI956106A0 FI 956106 A0 FI956106 A0 FI 956106A0 FI 956106 A FI956106 A FI 956106A FI 956106 A FI956106 A FI 956106A FI 956106 A0 FI956106 A0 FI 956106A0
Authority
FI
Finland
Prior art keywords
low
uses reverse
reverse prediction
celp codec
speed multimode
Prior art date
Application number
FI956106A
Other languages
English (en)
Swedish (sv)
Other versions
FI956106A (fi
Inventor
Kumar Swaminathan
Murthy Vemuganti
Original Assignee
Hughes Aircraft Co
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 Hughes Aircraft Co filed Critical Hughes Aircraft Co
Publication of FI956106A0 publication Critical patent/FI956106A0/fi
Publication of FI956106A publication Critical patent/FI956106A/fi

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
    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
    • 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
    • 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
    • G10L2019/0013—Codebook search algorithms
    • 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
    • G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
    • G10L25/24—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being the cepstrum
    • 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)
  • Physics & Mathematics (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
FI956106A 1994-12-19 1995-12-19 Pienen nopeuden monimoodinen CELP-koodekki, joka käyttää taaksepäin ennustamista FI956106A (fi)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/359,116 US5751903A (en) 1994-12-19 1994-12-19 Low rate multi-mode CELP codec that encodes line SPECTRAL frequencies utilizing an offset

Publications (2)

Publication Number Publication Date
FI956106A0 true FI956106A0 (fi) 1995-12-19
FI956106A FI956106A (fi) 1996-06-20

Family

ID=23412383

Family Applications (1)

Application Number Title Priority Date Filing Date
FI956106A FI956106A (fi) 1994-12-19 1995-12-19 Pienen nopeuden monimoodinen CELP-koodekki, joka käyttää taaksepäin ennustamista

Country Status (4)

Country Link
US (1) US5751903A (fi)
EP (1) EP0718822A3 (fi)
CA (1) CA2165484C (fi)
FI (1) FI956106A (fi)

Families Citing this family (79)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2729246A1 (fr) * 1995-01-06 1996-07-12 Matra Communication Procede de codage de parole a analyse par synthese
FR2729247A1 (fr) * 1995-01-06 1996-07-12 Matra Communication Procede de codage de parole a analyse par synthese
DE69615227T2 (de) * 1995-01-17 2002-04-25 Nec Corp Sprachkodierer mit aus aktuellen und vorhergehenden Rahmen extrahierten Merkmalen
US5835495A (en) * 1995-10-11 1998-11-10 Microsoft Corporation System and method for scaleable streamed audio transmission over a network
WO1997015046A1 (en) 1995-10-20 1997-04-24 America Online, Inc. Repetitive sound compression system
GB9603582D0 (en) 1996-02-20 1996-04-17 Hewlett Packard Co Method of accessing service resource items that are for use in a telecommunications system
JP3092652B2 (ja) * 1996-06-10 2000-09-25 日本電気株式会社 音声再生装置
CA2213909C (en) * 1996-08-26 2002-01-22 Nec Corporation High quality speech coder at low bit rates
US6111870A (en) * 1996-11-07 2000-08-29 Interdigital Technology Corporation Method and apparatus for compressing and transmitting high speed data
EP1085504B1 (en) * 1996-11-07 2002-05-29 Matsushita Electric Industrial Co., Ltd. CELP-Codec
JP3266178B2 (ja) * 1996-12-18 2002-03-18 日本電気株式会社 音声符号化装置
US6148282A (en) * 1997-01-02 2000-11-14 Texas Instruments Incorporated Multimodal code-excited linear prediction (CELP) coder and method using peakiness measure
FR2762464B1 (fr) * 1997-04-16 1999-06-25 France Telecom Procede et dispositif de codage d'un signal audiofrequence par analyse lpc "avant" et "arriere"
JP3134817B2 (ja) 1997-07-11 2001-02-13 日本電気株式会社 音声符号化復号装置
CN1124590C (zh) * 1997-09-10 2003-10-15 三星电子株式会社 改善话音信号编码器性能的方法
US5966688A (en) * 1997-10-28 1999-10-12 Hughes Electronics Corporation Speech mode based multi-stage vector quantizer
JP3357829B2 (ja) * 1997-12-24 2002-12-16 株式会社東芝 音声符号化／復号化方法
ATE302991T1 (de) * 1998-01-22 2005-09-15 Deutsche Telekom Ag Verfahren zur signalgesteuerten schaltung zwischen verschiedenen audiokodierungssystemen
US7415120B1 (en) 1998-04-14 2008-08-19 Akiba Electronics Institute Llc User adjustable volume control that accommodates hearing
DE69942521D1 (de) * 1998-04-14 2010-08-05 Hearing Enhancement Co Llc Vom benutzer einstellbare lautstärkensteuerung zur höranpassung
US6311155B1 (en) * 2000-02-04 2001-10-30 Hearing Enhancement Company Llc Use of voice-to-remaining audio (VRA) in consumer applications
GB9809820D0 (en) * 1998-05-09 1998-07-08 Univ Manchester Speech encoding
JP3180762B2 (ja) * 1998-05-11 2001-06-25 日本電気株式会社 音声符号化装置及び音声復号化装置
US6249758B1 (en) * 1998-06-30 2001-06-19 Nortel Networks Limited Apparatus and method for coding speech signals by making use of voice/unvoiced characteristics of the speech signals
US6260010B1 (en) * 1998-08-24 2001-07-10 Conexant Systems, Inc. Speech encoder using gain normalization that combines open and closed loop gains
US7117146B2 (en) * 1998-08-24 2006-10-03 Mindspeed Technologies, Inc. System for improved use of pitch enhancement with subcodebooks
US6240386B1 (en) 1998-08-24 2001-05-29 Conexant Systems, Inc. Speech codec employing noise classification for noise compensation
US7072832B1 (en) * 1998-08-24 2006-07-04 Mindspeed Technologies, Inc. System for speech encoding having an adaptive encoding arrangement
US6389389B1 (en) 1998-10-13 2002-05-14 Motorola, Inc. Speech recognition using unequally-weighted subvector error measures for determining a codebook vector index to represent plural speech parameters
US6691084B2 (en) * 1998-12-21 2004-02-10 Qualcomm Incorporated Multiple mode variable rate speech coding
US6311154B1 (en) 1998-12-30 2001-10-30 Nokia Mobile Phones Limited Adaptive windows for analysis-by-synthesis CELP-type speech coding
DE19911179C1 (de) * 1999-03-12 2000-11-02 Deutsche Telekom Mobil Verfahren zur Adaption der Betriebsart eines Multi-Mode-Codecs an sich verändernde Funkbedingungen in einem CDMA-Mobilfunknetz
JP2000308167A (ja) * 1999-04-20 2000-11-02 Mitsubishi Electric Corp 音声符号化装置
US6442278B1 (en) 1999-06-15 2002-08-27 Hearing Enhancement Company, Llc Voice-to-remaining audio (VRA) interactive center channel downmix
AR024353A1 (es) 1999-06-15 2002-10-02 He Chunhong Audifono y equipo auxiliar interactivo con relacion de voz a audio remanente
JP2001109489A (ja) * 1999-08-03 2001-04-20 Canon Inc 音声情報処理方法、装置および記憶媒体
US6604070B1 (en) * 1999-09-22 2003-08-05 Conexant Systems, Inc. System of encoding and decoding speech signals
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
US6959274B1 (en) * 1999-09-22 2005-10-25 Mindspeed Technologies, Inc. Fixed rate speech compression system and method
US6418405B1 (en) * 1999-09-30 2002-07-09 Motorola, Inc. Method and apparatus for dynamic segmentation of a low bit rate digital voice message
US6370500B1 (en) * 1999-09-30 2002-04-09 Motorola, Inc. Method and apparatus for non-speech activity reduction of a low bit rate digital voice message
US7016835B2 (en) * 1999-10-29 2006-03-21 International Business Machines Corporation Speech and signal digitization by using recognition metrics to select from multiple techniques
WO2001052241A1 (en) * 2000-01-11 2001-07-19 Matsushita Electric Industrial Co., Ltd. Multi-mode voice encoding device and decoding device
US7266501B2 (en) * 2000-03-02 2007-09-04 Akiba Electronics Institute Llc Method and apparatus for accommodating primary content audio and secondary content remaining audio capability in the digital audio production process
US6351733B1 (en) 2000-03-02 2002-02-26 Hearing Enhancement Company, Llc Method and apparatus for accommodating primary content audio and secondary content remaining audio capability in the digital audio production process
US20040096065A1 (en) * 2000-05-26 2004-05-20 Vaudrey Michael A. Voice-to-remaining audio (VRA) interactive center channel downmix
US6673710B1 (en) 2000-10-13 2004-01-06 Bridge Semiconductor Corporation Method of connecting a conductive trace and an insulative base to a semiconductor chip
CA2327041A1 (en) * 2000-11-22 2002-05-22 Voiceage Corporation A method for indexing pulse positions and signs in algebraic codebooks for efficient coding of wideband signals
CN1210690C (zh) * 2000-11-30 2005-07-13 松下电器产业株式会社 音频解码器和音频解码方法
DE10063079A1 (de) * 2000-12-18 2002-07-11 Infineon Technologies Ag Verfahren zum Erkennen von Identifikationsmustern
US6633839B2 (en) * 2001-02-02 2003-10-14 Motorola, Inc. Method and apparatus for speech reconstruction in a distributed speech recognition system
US6658383B2 (en) 2001-06-26 2003-12-02 Microsoft Corporation Method for coding speech and music signals
US6725191B2 (en) * 2001-07-19 2004-04-20 Vocaltec Communications Limited Method and apparatus for transmitting voice over internet
KR100434275B1 (ko) * 2001-07-23 2004-06-05 엘지전자 주식회사 패킷 변환 장치 및 그를 이용한 패킷 변환 방법
US6999928B2 (en) * 2001-08-21 2006-02-14 International Business Machines Corporation Method and apparatus for speaker identification using cepstral covariance matrices and distance metrics
US7453936B2 (en) * 2001-11-09 2008-11-18 Sony Corporation Transmitting apparatus and method, receiving apparatus and method, program and recording medium, and transmitting/receiving system
US6785645B2 (en) 2001-11-29 2004-08-31 Microsoft Corporation Real-time speech and music classifier
US6647366B2 (en) * 2001-12-28 2003-11-11 Microsoft Corporation Rate control strategies for speech and music coding
US7363218B2 (en) 2002-10-25 2008-04-22 Dilithium Networks Pty. Ltd. Method and apparatus for fast CELP parameter mapping
WO2004064041A1 (en) * 2003-01-09 2004-07-29 Dilithium Networks Pty Limited Method and apparatus for improved quality voice transcoding
KR100527002B1 (ko) * 2003-02-26 2005-11-08 한국전자통신연구원 음성 신호의 에너지 분포 특성을 고려한 쉐이핑 장치 및 방법
US7596488B2 (en) * 2003-09-15 2009-09-29 Microsoft Corporation System and method for real-time jitter control and packet-loss concealment in an audio signal
US7412376B2 (en) * 2003-09-10 2008-08-12 Microsoft Corporation System and method for real-time detection and preservation of speech onset in a signal
US7668712B2 (en) * 2004-03-31 2010-02-23 Microsoft Corporation Audio encoding and decoding with intra frames and adaptive forward error correction
MXPA06012578A (es) * 2004-05-17 2006-12-15 Nokia Corp Codificacion de audio con distintos modelos de codificacion.
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
US7177804B2 (en) * 2005-05-31 2007-02-13 Microsoft Corporation Sub-band voice codec with multi-stage codebooks and redundant coding
US8050915B2 (en) * 2005-07-11 2011-11-01 Lg Electronics Inc. Apparatus and method of encoding and decoding audio signals using hierarchical block switching and linear prediction coding
EP1989703A4 (en) * 2006-01-18 2012-03-14 Lg Electronics Inc DEVICE AND METHOD FOR CODING AND DECODING A SIGNAL
KR100883656B1 (ko) * 2006-12-28 2009-02-18 삼성전자주식회사 오디오 신호의 분류 방법 및 장치와 이를 이용한 오디오신호의 부호화/복호화 방법 및 장치
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
US8238538B2 (en) 2009-05-28 2012-08-07 Comcast Cable Communications, Llc Stateful home phone service
KR102150496B1 (ko) 2013-04-05 2020-09-01 돌비 인터네셔널 에이비 오디오 인코더 및 디코더
US9418671B2 (en) * 2013-08-15 2016-08-16 Huawei Technologies Co., Ltd. Adaptive high-pass post-filter
US9997172B2 (en) * 2013-12-02 2018-06-12 Nuance Communications, Inc. Voice activity detection (VAD) for a coded speech bitstream without decoding
CN108922565B (zh) * 2018-07-30 2021-07-13 四川大学 基于ftsl谱线的腭裂语音咽擦音自动检测方法
US10694298B2 (en) * 2018-10-22 2020-06-23 Zeev Neumeier Hearing aid

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5194950A (en) * 1988-02-29 1993-03-16 Mitsubishi Denki Kabushiki Kaisha Vector quantizer
JPH0636156B2 (ja) * 1989-03-13 1994-05-11 インターナショナル・ビジネス・マシーンズ・コーポレーション 音声認識装置
JPH0451199A (ja) * 1990-06-18 1992-02-19 Fujitsu Ltd 音声符号化・復号化方式
US5293449A (en) * 1990-11-23 1994-03-08 Comsat Corporation Analysis-by-synthesis 2,4 kbps linear predictive speech codec
JP3151874B2 (ja) * 1991-02-26 2001-04-03 日本電気株式会社 音声パラメータ符号化方式および装置
US5255339A (en) * 1991-07-19 1993-10-19 Motorola, Inc. Low bit rate vocoder means and method
US5233660A (en) * 1991-09-10 1993-08-03 At&T Bell Laboratories Method and apparatus for low-delay celp speech coding and decoding
US5448680A (en) * 1992-02-12 1995-09-05 The United States Of America As Represented By The Secretary Of The Navy Voice communication processing system
US5495555A (en) * 1992-06-01 1996-02-27 Hughes Aircraft Company High quality low bit rate celp-based speech codec
EP0751496B1 (en) * 1992-06-29 2000-04-19 Nippon Telegraph And Telephone Corporation Speech coding method and apparatus for the same
US5513297A (en) * 1992-07-10 1996-04-30 At&T Corp. Selective application of speech coding techniques to input signal segments
JP2746039B2 (ja) * 1993-01-22 1998-04-28 日本電気株式会社 音声符号化方式

Also Published As

Publication number Publication date
CA2165484A1 (en) 1996-06-20
FI956106A (fi) 1996-06-20
CA2165484C (en) 2001-02-13
EP0718822A2 (en) 1996-06-26
EP0718822A3 (en) 1998-09-23
US5751903A (en) 1998-05-12

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