DE69420431D1 - Sprachkodierungssystem - Google Patents

Sprachkodierungssystem

Info

Publication number
DE69420431D1
DE69420431D1 DE69420431T DE69420431T DE69420431D1 DE 69420431 D1 DE69420431 D1 DE 69420431D1 DE 69420431 T DE69420431 T DE 69420431T DE 69420431 T DE69420431 T DE 69420431T DE 69420431 D1 DE69420431 D1 DE 69420431D1
Authority
DE
Germany
Prior art keywords
spectral
signals
speech signals
parameters
spectral parameters
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
DE69420431T
Other languages
English (en)
Other versions
DE69420431T2 (de
Inventor
Kazunori Ozawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Publication of DE69420431D1 publication Critical patent/DE69420431D1/de
Application granted granted Critical
Publication of DE69420431T2 publication Critical patent/DE69420431T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/083—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being an excitation gain
    • 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
    • G10L19/07—Line spectrum pair [LSP] 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
    • 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
    • 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
    • G10L2019/0002—Codebook adaptations
    • 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)
  • 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)
DE69420431T 1993-01-22 1994-01-21 Sprachkodierungssystem Expired - Lifetime DE69420431T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5008737A JP2746039B2 (ja) 1993-01-22 1993-01-22 音声符号化方式

Publications (2)

Publication Number Publication Date
DE69420431D1 true DE69420431D1 (de) 1999-10-14
DE69420431T2 DE69420431T2 (de) 2000-07-13

Family

ID=11701269

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69420431T Expired - Lifetime DE69420431T2 (de) 1993-01-22 1994-01-21 Sprachkodierungssystem

Country Status (6)

Country Link
US (1) US5737484A (de)
EP (1) EP0607989B1 (de)
JP (1) JP2746039B2 (de)
AU (1) AU666599B2 (de)
CA (1) CA2113928C (de)
DE (1) DE69420431T2 (de)

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US5751903A (en) * 1994-12-19 1998-05-12 Hughes Electronics Low rate multi-mode CELP codec that encodes line SPECTRAL frequencies utilizing an offset
JPH08179796A (ja) * 1994-12-21 1996-07-12 Sony Corp 音声符号化方法
DE69615870T2 (de) * 1995-01-17 2002-04-04 Nec Corp Sprachkodierer mit aus aktuellen und vorhergehenden Rahmen extrahierten Merkmalen
SE508788C2 (sv) * 1995-04-12 1998-11-02 Ericsson Telefon Ab L M Förfarande att bestämma positionerna inom en talram för excitationspulser
JPH08292797A (ja) * 1995-04-20 1996-11-05 Nec Corp 音声符号化装置
JP3308764B2 (ja) * 1995-05-31 2002-07-29 日本電気株式会社 音声符号化装置
JP3196595B2 (ja) * 1995-09-27 2001-08-06 日本電気株式会社 音声符号化装置
JP4005154B2 (ja) * 1995-10-26 2007-11-07 ソニー株式会社 音声復号化方法及び装置
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US6463405B1 (en) 1996-12-20 2002-10-08 Eliot M. Case Audiophile encoding of digital audio data using 2-bit polarity/magnitude indicator and 8-bit scale factor for each subband
US5845251A (en) * 1996-12-20 1998-12-01 U S West, Inc. Method, system and product for modifying the bandwidth of subband encoded audio data
US5864820A (en) * 1996-12-20 1999-01-26 U S West, Inc. Method, system and product for mixing of encoded audio signals
US6148282A (en) * 1997-01-02 2000-11-14 Texas Instruments Incorporated Multimodal code-excited linear prediction (CELP) coder and method using peakiness measure
US7024355B2 (en) * 1997-01-27 2006-04-04 Nec Corporation Speech coder/decoder
KR20000064913A (ko) * 1997-02-10 2000-11-06 요트.게.아. 롤페즈 저ㄴ송 시스템, 수신기, 및 재구성된 음성 신호 유도 방법
CA2233896C (en) * 1997-04-09 2002-11-19 Kazunori Ozawa Signal coding system
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
EP1002237B1 (de) 1998-06-09 2011-08-10 Panasonic Corporation Sprachkodierung und sprachdekodierung
EP1093230A4 (de) 1998-06-30 2005-07-13 Nec Corp Sprachkodierer
US6138092A (en) * 1998-07-13 2000-10-24 Lockheed Martin Corporation CELP speech synthesizer with epoch-adaptive harmonic generator for pitch harmonics below voicing cutoff frequency
JP3319396B2 (ja) 1998-07-13 2002-08-26 日本電気株式会社 音声符号化装置ならびに音声符号化復号化装置
US6148283A (en) * 1998-09-23 2000-11-14 Qualcomm Inc. Method and apparatus using multi-path multi-stage vector quantizer
JP3180786B2 (ja) * 1998-11-27 2001-06-25 日本電気株式会社 音声符号化方法及び音声符号化装置
US6681203B1 (en) * 1999-02-26 2004-01-20 Lucent Technologies Inc. Coupled error code protection for multi-mode vocoders
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
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JP3582589B2 (ja) 2001-03-07 2004-10-27 日本電気株式会社 音声符号化装置及び音声復号化装置
MXPA04008111A (es) * 2002-02-22 2005-06-17 Le Berger Du Savoir Inc Conector para fibras opticas.
FI118834B (fi) * 2004-02-23 2008-03-31 Nokia Corp Audiosignaalien luokittelu
FI118835B (fi) * 2004-02-23 2008-03-31 Nokia Corp Koodausmallin valinta
US7668712B2 (en) * 2004-03-31 2010-02-23 Microsoft Corporation Audio encoding and decoding with intra frames and adaptive forward error correction
EP2273494A3 (de) 2004-09-17 2012-11-14 Panasonic Corporation Skalierbare Kodierungsvorrichtung, skalierbare Dekodierungsvorrichtung
EP1801783B1 (de) * 2004-09-30 2009-08-19 Panasonic Corporation Einrichtung für skalierbare codierung, einrichtung für skalierbare decodierung und verfahren dafür
JP2006145712A (ja) * 2004-11-18 2006-06-08 Pioneer Electronic Corp オーディオデータ補間装置
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
US8090573B2 (en) * 2006-01-20 2012-01-03 Qualcomm Incorporated Selection of encoding modes and/or encoding rates for speech compression with open loop re-decision
US8032369B2 (en) * 2006-01-20 2011-10-04 Qualcomm Incorporated Arbitrary average data rates for variable rate coders
US8346544B2 (en) * 2006-01-20 2013-01-01 Qualcomm Incorporated Selection of encoding modes and/or encoding rates for speech compression with closed loop re-decision
CN101548317B (zh) * 2006-12-15 2012-01-18 松下电器产业株式会社 自适应激励矢量量化装置和自适应激励矢量量化方法
JP5241509B2 (ja) 2006-12-15 2013-07-17 パナソニック株式会社 適応音源ベクトル量子化装置、適応音源ベクトル逆量子化装置、およびこれらの方法
US7628530B2 (en) * 2007-03-14 2009-12-08 Nike, Inc. Watch casing construction incorporating watch band lugs
JP4525694B2 (ja) * 2007-03-27 2010-08-18 パナソニック株式会社 音声符号化装置
US20110026581A1 (en) * 2007-10-16 2011-02-03 Nokia Corporation Scalable Coding with Partial Eror Protection
WO2009081568A1 (ja) * 2007-12-21 2009-07-02 Panasonic Corporation 符号化装置、復号装置および符号化方法
JP5269195B2 (ja) * 2009-05-29 2013-08-21 日本電信電話株式会社 符号化装置、復号装置、符号化方法、復号方法及びそのプログラム
KR101747917B1 (ko) * 2010-10-18 2017-06-15 삼성전자주식회사 선형 예측 계수를 양자화하기 위한 저복잡도를 가지는 가중치 함수 결정 장치 및 방법

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JPH0451199A (ja) * 1990-06-18 1992-02-19 Fujitsu Ltd 音声符号化・復号化方式
JP2626223B2 (ja) * 1990-09-26 1997-07-02 日本電気株式会社 音声符号化装置
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JP3143956B2 (ja) * 1991-06-27 2001-03-07 日本電気株式会社 音声パラメータ符号化方式

Also Published As

Publication number Publication date
JPH06222797A (ja) 1994-08-12
AU666599B2 (en) 1996-02-15
US5737484A (en) 1998-04-07
AU5391394A (en) 1994-07-28
EP0607989B1 (de) 1999-09-08
CA2113928C (en) 1998-08-18
EP0607989A2 (de) 1994-07-27
DE69420431T2 (de) 2000-07-13
EP0607989A3 (en) 1994-09-21
JP2746039B2 (ja) 1998-04-28
CA2113928A1 (en) 1994-07-23

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