DE69918898D1 - Vorrichtung zur Sprachkodierung und -dekodierung - Google Patents

Vorrichtung zur Sprachkodierung und -dekodierung

Info

Publication number
DE69918898D1
DE69918898D1 DE69918898T DE69918898T DE69918898D1 DE 69918898 D1 DE69918898 D1 DE 69918898D1 DE 69918898 T DE69918898 T DE 69918898T DE 69918898 T DE69918898 T DE 69918898T DE 69918898 D1 DE69918898 D1 DE 69918898D1
Authority
DE
Germany
Prior art keywords
decoding
speech coding
speech
coding
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
DE69918898T
Other languages
English (en)
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
Application granted granted Critical
Publication of DE69918898D1 publication Critical patent/DE69918898D1/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
    • G10L19/012—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
    • G10L19/08—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

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)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
DE69918898T 1998-05-11 1999-05-11 Vorrichtung zur Sprachkodierung und -dekodierung Expired - Lifetime DE69918898D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14508798A JP3180762B2 (ja) 1998-05-11 1998-05-11 音声符号化装置及び音声復号化装置

Publications (1)

Publication Number Publication Date
DE69918898D1 true DE69918898D1 (de) 2004-09-02

Family

ID=15377091

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69918898T Expired - Lifetime DE69918898D1 (de) 1998-05-11 1999-05-11 Vorrichtung zur Sprachkodierung und -dekodierung

Country Status (5)

Country Link
US (1) US6978235B1 (de)
EP (1) EP0957472B1 (de)
JP (1) JP3180762B2 (de)
CA (1) CA2271410C (de)
DE (1) DE69918898D1 (de)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6556966B1 (en) * 1998-08-24 2003-04-29 Conexant Systems, Inc. Codebook structure for changeable pulse multimode speech coding
WO2000016501A1 (en) * 1998-09-11 2000-03-23 Motorola Inc. Method and apparatus for coding an information signal
JP2001318698A (ja) * 2000-05-10 2001-11-16 Nec Corp 音声符号化装置及び音声復号化装置
JP3404016B2 (ja) 2000-12-26 2003-05-06 三菱電機株式会社 音声符号化装置及び音声符号化方法
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
KR100546758B1 (ko) * 2003-06-30 2006-01-26 한국전자통신연구원 음성의 상호부호화시 전송률 결정 장치 및 방법
JP4887288B2 (ja) * 2005-03-25 2012-02-29 パナソニック株式会社 音声符号化装置および音声符号化方法
US20090240494A1 (en) * 2006-06-29 2009-09-24 Panasonic Corporation Voice encoding device and voice encoding method
ATE512437T1 (de) * 2006-11-29 2011-06-15 Loquendo Spa Quellenabhängige codierung und decodierung mit mehreren codebüchern
JP5241701B2 (ja) * 2007-03-02 2013-07-17 パナソニック株式会社 符号化装置および符号化方法
GB2466675B (en) 2009-01-06 2013-03-06 Skype Speech coding
GB2466669B (en) * 2009-01-06 2013-03-06 Skype Speech coding
GB2466674B (en) 2009-01-06 2013-11-13 Skype Speech coding
GB2466671B (en) 2009-01-06 2013-03-27 Skype Speech encoding
GB2466670B (en) 2009-01-06 2012-11-14 Skype Speech encoding
GB2466673B (en) 2009-01-06 2012-11-07 Skype Quantization
GB2466672B (en) 2009-01-06 2013-03-13 Skype Speech coding
CN101609680B (zh) * 2009-06-01 2012-01-04 华为技术有限公司 压缩编码和解码的方法、编码器和解码器以及编码装置
US8452606B2 (en) 2009-09-29 2013-05-28 Skype Speech encoding using multiple bit rates
US8700406B2 (en) * 2011-05-23 2014-04-15 Qualcomm Incorporated Preserving audio data collection privacy in mobile devices
US9015044B2 (en) 2012-03-05 2015-04-21 Malaspina Labs (Barbados) Inc. Formant based speech reconstruction from noisy signals
US9384759B2 (en) 2012-03-05 2016-07-05 Malaspina Labs (Barbados) Inc. Voice activity detection and pitch estimation
US9437213B2 (en) 2012-03-05 2016-09-06 Malaspina Labs (Barbados) Inc. Voice signal enhancement
CN111933162B (zh) * 2020-08-08 2024-03-26 北京百瑞互联技术股份有限公司 一种优化lc3编码器残差编码和噪声估计编码的方法

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5754976A (en) * 1990-02-23 1998-05-19 Universite De Sherbrooke Algebraic codebook with signal-selected pulse amplitude/position combinations for fast coding of speech
US5701392A (en) * 1990-02-23 1997-12-23 Universite De Sherbrooke Depth-first algebraic-codebook search for fast coding of speech
CA2010830C (en) * 1990-02-23 1996-06-25 Jean-Pierre Adoul Dynamic codebook for efficient speech coding based on algebraic codes
JP3114197B2 (ja) 1990-11-02 2000-12-04 日本電気株式会社 音声パラメータ符号化方法
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
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
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
US5479559A (en) 1993-05-28 1995-12-26 Motorola, Inc. Excitation synchronous time encoding vocoder and method
US5602961A (en) 1994-05-31 1997-02-11 Alaris, Inc. Method and apparatus for speech compression using multi-mode code excited linear predictive coding
JP3003531B2 (ja) 1995-01-05 2000-01-31 日本電気株式会社 音声符号化装置
US5751903A (en) * 1994-12-19 1998-05-12 Hughes Electronics Low rate multi-mode CELP codec that encodes line SPECTRAL frequencies utilizing an offset
JP3089967B2 (ja) 1995-01-17 2000-09-18 日本電気株式会社 音声符号化装置
US5704003A (en) * 1995-09-19 1997-12-30 Lucent Technologies Inc. RCELP coder
JP3196595B2 (ja) 1995-09-27 2001-08-06 日本電気株式会社 音声符号化装置

Also Published As

Publication number Publication date
JPH11327597A (ja) 1999-11-26
CA2271410C (en) 2004-11-02
EP0957472A2 (de) 1999-11-17
JP3180762B2 (ja) 2001-06-25
CA2271410A1 (en) 1999-11-11
EP0957472B1 (de) 2004-07-28
EP0957472A3 (de) 2000-02-23
US6978235B1 (en) 2005-12-20

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