DE3576444D1 - Sprachkodierung im frequenzbereich. - Google Patents

Sprachkodierung im frequenzbereich.

Info

Publication number
DE3576444D1
DE3576444D1 DE8585306015T DE3576444T DE3576444D1 DE 3576444 D1 DE3576444 D1 DE 3576444D1 DE 8585306015 T DE8585306015 T DE 8585306015T DE 3576444 T DE3576444 T DE 3576444T DE 3576444 D1 DE3576444 D1 DE 3576444D1
Authority
DE
Germany
Prior art keywords
frequency range
speech coding
bits
channels
coder
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
DE8585306015T
Other languages
English (en)
Inventor
Soo Ngee Koh
Costas S University Of Xydeas
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.)
British Telecommunications PLC
Original Assignee
British Telecommunications PLC
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 British Telecommunications PLC filed Critical British Telecommunications PLC
Application granted granted Critical
Publication of DE3576444D1 publication Critical patent/DE3576444D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission
    • H04B1/667—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission using a division in frequency subbands
    • 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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/032—Quantisation or dequantisation of spectral components
    • 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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/0204—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 spectral analysis, e.g. transform vocoders or subband vocoders using subband decomposition

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Human Computer Interaction (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Analogue/Digital Conversion (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
DE8585306015T 1984-08-24 1985-08-23 Sprachkodierung im frequenzbereich. Expired - Lifetime DE3576444D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB848421498A GB8421498D0 (en) 1984-08-24 1984-08-24 Frequency domain speech coding

Publications (1)

Publication Number Publication Date
DE3576444D1 true DE3576444D1 (de) 1990-04-12

Family

ID=10565770

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8585306015T Expired - Lifetime DE3576444D1 (de) 1984-08-24 1985-08-23 Sprachkodierung im frequenzbereich.

Country Status (7)

Country Link
US (1) US4949383A (de)
EP (1) EP0176243B1 (de)
JP (1) JPS61112433A (de)
AT (1) ATE50896T1 (de)
CA (1) CA1248234A (de)
DE (1) DE3576444D1 (de)
GB (1) GB8421498D0 (de)

Families Citing this family (70)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3587251T2 (de) * 1984-12-20 1993-07-15 Gte Laboratories Inc Anpassbares verfahren und vorrichtung fuer sprachkodierung.
WO1986003873A1 (en) * 1984-12-20 1986-07-03 Gte Laboratories Incorporated Method and apparatus for encoding speech
US4790016A (en) * 1985-11-14 1988-12-06 Gte Laboratories Incorporated Adaptive method and apparatus for coding speech
US4899384A (en) * 1986-08-25 1990-02-06 Ibm Corporation Table controlled dynamic bit allocation in a variable rate sub-band speech coder
NL8700985A (nl) * 1987-04-27 1988-11-16 Philips Nv Systeem voor sub-band codering van een digitaal audiosignaal.
US4926482A (en) * 1987-06-26 1990-05-15 Unisys Corp. Apparatus and method for real time data compressor
USRE40280E1 (en) 1988-12-30 2008-04-29 Lucent Technologies Inc. Rate loop processor for perceptual encoder/decoder
US5341457A (en) * 1988-12-30 1994-08-23 At&T Bell Laboratories Perceptual coding of audio signals
US5222189A (en) * 1989-01-27 1993-06-22 Dolby Laboratories Licensing Corporation Low time-delay transform coder, decoder, and encoder/decoder for high-quality audio
US5109417A (en) * 1989-01-27 1992-04-28 Dolby Laboratories Licensing Corporation Low bit rate transform coder, decoder, and encoder/decoder for high-quality audio
AU631404B2 (en) * 1989-01-27 1992-11-26 Dolby Laboratories Licensing Corporation Low bit rate transform coder, decoder and encoder/decoder for high-quality audio
US5142656A (en) * 1989-01-27 1992-08-25 Dolby Laboratories Licensing Corporation Low bit rate transform coder, decoder, and encoder/decoder for high-quality audio
EP0610975B1 (de) * 1989-01-27 1998-09-02 Dolby Laboratories Licensing Corporation Formatierung eines kodierten Signals für Kodierer und Dekodierer eines Audiosystems hoher Qualität
US5752225A (en) * 1989-01-27 1998-05-12 Dolby Laboratories Licensing Corporation Method and apparatus for split-band encoding and split-band decoding of audio information using adaptive bit allocation to adjacent subbands
US5115240A (en) * 1989-09-26 1992-05-19 Sony Corporation Method and apparatus for encoding voice signals divided into a plurality of frequency bands
US5388181A (en) * 1990-05-29 1995-02-07 Anderson; David J. Digital audio compression system
US5235671A (en) * 1990-10-15 1993-08-10 Gte Laboratories Incorporated Dynamic bit allocation subband excited transform coding method and apparatus
US5206884A (en) * 1990-10-25 1993-04-27 Comsat Transform domain quantization technique for adaptive predictive coding
NL9100173A (nl) * 1991-02-01 1992-09-01 Philips Nv Subbandkodeerinrichting, en een zender voorzien van de kodeerinrichting.
US5317672A (en) * 1991-03-05 1994-05-31 Picturetel Corporation Variable bit rate speech encoder
DE69229627T2 (de) * 1991-03-05 1999-12-02 Picturetel Corp Sprachkodierer mit veränderlicher bitrate
US5559900A (en) * 1991-03-12 1996-09-24 Lucent Technologies Inc. Compression of signals for perceptual quality by selecting frequency bands having relatively high energy
EP0522219B1 (de) * 1991-07-11 1997-10-15 International Business Machines Corporation Verbessertes Verfahren zur Teilbandbildkodierung und Einrichtung zur Durchführung dieses Verfahrens
DE4124493C1 (de) * 1991-07-24 1993-02-11 Institut Fuer Rundfunktechnik Gmbh, 8000 Muenchen, De
ES2164640T3 (es) * 1991-08-02 2002-03-01 Sony Corp Codificador digital con asignacion dinamica de bits de cuantificacion.
EP0559348A3 (de) 1992-03-02 1993-11-03 AT&T Corp. Rateurregelschleifenprozessor für einen wahrnehmungsgebundenen Koder/Dekoder
JP3153933B2 (ja) * 1992-06-16 2001-04-09 ソニー株式会社 データ符号化装置及び方法並びにデータ復号化装置及び方法
US6252909B1 (en) * 1992-09-21 2001-06-26 Aware, Inc. Multi-carrier transmission system utilizing channels of different bandwidth
US5408580A (en) * 1992-09-21 1995-04-18 Aware, Inc. Audio compression system employing multi-rate signal analysis
DE4236989C2 (de) * 1992-11-02 1994-11-17 Fraunhofer Ges Forschung Verfahren zur Übertragung und/oder Speicherung digitaler Signale mehrerer Kanäle
JPH0646531U (ja) * 1992-12-07 1994-06-28 利秋 山本 学童用机の作業用天板
US5563960A (en) * 1993-01-22 1996-10-08 David Sarnoff Research Center, Inc. Apparatus and method for emphasizing a selected region in the compressed representation of an image
US5412741A (en) * 1993-01-22 1995-05-02 David Sarnoff Research Center, Inc. Apparatus and method for compressing information
JP3186292B2 (ja) * 1993-02-02 2001-07-11 ソニー株式会社 高能率符号化方法及び装置
JP3186307B2 (ja) * 1993-03-09 2001-07-11 ソニー株式会社 圧縮データ記録装置及び方法
US5526464A (en) * 1993-04-29 1996-06-11 Northern Telecom Limited Reducing search complexity for code-excited linear prediction (CELP) coding
US5581654A (en) * 1993-05-25 1996-12-03 Sony Corporation Method and apparatus for information encoding and decoding
US5664057A (en) * 1993-07-07 1997-09-02 Picturetel Corporation Fixed bit rate speech encoder/decoder
WO1995002240A1 (en) * 1993-07-07 1995-01-19 Picturetel Corporation A fixed bit rate speech encoder/decoder
US5632003A (en) * 1993-07-16 1997-05-20 Dolby Laboratories Licensing Corporation Computationally efficient adaptive bit allocation for coding method and apparatus
BE1007617A3 (nl) * 1993-10-11 1995-08-22 Philips Electronics Nv Transmissiesysteem met gebruik van verschillende codeerprincipes.
JP3125543B2 (ja) * 1993-11-29 2001-01-22 ソニー株式会社 信号符号化方法及び装置、信号復号化方法及び装置、並びに記録媒体
US5608713A (en) * 1994-02-09 1997-03-04 Sony Corporation Bit allocation of digital audio signal blocks by non-linear processing
DE69429917T2 (de) * 1994-02-17 2002-07-18 Motorola Inc Verfahren und vorrichtung zur gruppenkodierung von signalen
JP3186412B2 (ja) * 1994-04-01 2001-07-11 ソニー株式会社 情報符号化方法、情報復号化方法、及び情報伝送方法
JP3277699B2 (ja) * 1994-06-13 2002-04-22 ソニー株式会社 信号符号化方法及び装置並びに信号復号化方法及び装置
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
JP3341474B2 (ja) * 1994-07-28 2002-11-05 ソニー株式会社 情報符号化方法及び復号化方法、情報符号化装置及び復号化装置、並びに情報記録媒体
JP3557674B2 (ja) * 1994-12-15 2004-08-25 ソニー株式会社 高能率符号化方法及び装置
US5913186A (en) * 1996-03-25 1999-06-15 Prometheus, Inc. Discrete one dimensional signal processing apparatus and method using energy spreading coding
US5838377A (en) * 1996-12-20 1998-11-17 Analog Devices, Inc. Video compressed circuit using recursive wavelet filtering
US5984514A (en) * 1996-12-20 1999-11-16 Analog Devices, Inc. Method and apparatus for using minimal and optimal amount of SRAM delay line storage in the calculation of an X Y separable mallat wavelet transform
GB2326572A (en) * 1997-06-19 1998-12-23 Softsound Limited Low bit rate audio coder and decoder
JP2002330075A (ja) * 2001-05-07 2002-11-15 Matsushita Electric Ind Co Ltd サブバンドａｄｐｃｍ符号化方法、復号方法、サブバンドａｄｐｃｍ符号化装置、復号装置およびワイヤレスマイクロホン送信システム、受信システム
US7240001B2 (en) 2001-12-14 2007-07-03 Microsoft Corporation Quality improvement techniques in an audio encoder
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
US7043423B2 (en) * 2002-07-16 2006-05-09 Dolby Laboratories Licensing Corporation Low bit-rate audio coding systems and methods that use expanding quantizers with arithmetic coding
JP4676140B2 (ja) 2002-09-04 2011-04-27 マイクロソフト コーポレーション オーディオの量子化および逆量子化
US7502743B2 (en) 2002-09-04 2009-03-10 Microsoft Corporation Multi-channel audio encoding and decoding with multi-channel transform selection
FR2849727B1 (fr) * 2003-01-08 2005-03-18 France Telecom Procede de codage et de decodage audio a debit variable
KR100940531B1 (ko) * 2003-07-16 2010-02-10 삼성전자주식회사 광대역 음성 신호 압축 및 복원 장치와 그 방법
US7460990B2 (en) 2004-01-23 2008-12-02 Microsoft Corporation Efficient coding of digital media spectral data using wide-sense perceptual similarity
US7885819B2 (en) 2007-06-29 2011-02-08 Microsoft Corporation Bitstream syntax for multi-process audio decoding
US8249883B2 (en) 2007-10-26 2012-08-21 Microsoft Corporation Channel extension coding for multi-channel source
KR20140085453A (ko) * 2011-10-27 2014-07-07 엘지전자 주식회사 음성 신호 부호화 방법 및 복호화 방법과 이를 이용하는 장치
CN103548080B (zh) * 2012-05-11 2017-03-08 松下电器产业株式会社 声音信号混合编码器、声音信号混合解码器、声音信号编码方法以及声音信号解码方法
CN106941004B (zh) * 2012-07-13 2021-05-18 华为技术有限公司 音频信号的比特分配的方法和装置
US9460729B2 (en) 2012-09-21 2016-10-04 Dolby Laboratories Licensing Corporation Layered approach to spatial audio coding
CN111312277B (zh) 2014-03-03 2023-08-15 三星电子株式会社 用于带宽扩展的高频解码的方法及设备
EP3913628A1 (de) * 2014-03-24 2021-11-24 Samsung Electronics Co., Ltd. Hochbandiges codierungsverfahren

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2389277A1 (fr) * 1977-04-29 1978-11-24 Ibm France Procede de quantification a allocation dynamique du taux de bits disponible, et dispositif de mise en oeuvre dudit procede
FR2412987A1 (fr) * 1977-12-23 1979-07-20 Ibm France Procede de compression de donnees relatives au signal vocal et dispositif mettant en oeuvre ledit procede
US4184049A (en) * 1978-08-25 1980-01-15 Bell Telephone Laboratories, Incorporated Transform speech signal coding with pitch controlled adaptive quantizing
DE3102822C2 (de) * 1981-01-28 1984-02-16 Siemens AG, 1000 Berlin und 8000 München Verfahren zur frequenzbandkomprimierten Sprachübertragung
JPS5921039B2 (ja) * 1981-11-04 1984-05-17 日本電信電話株式会社 適応予測符号化方式
EP0085820B1 (de) * 1982-02-09 1985-11-21 International Business Machines Corporation Verfahren zur digitalen Übertragung mit mehreren Geschwindigkeiten und Einrichtung zur Ausführung dieses Verfahrens
US4516258A (en) * 1982-06-30 1985-05-07 At&T Bell Laboratories Bit allocation generator for adaptive transform coder
US4535472A (en) * 1982-11-05 1985-08-13 At&T Bell Laboratories Adaptive bit allocator
CA1253255A (en) * 1983-05-16 1989-04-25 Nec Corporation System for simultaneously coding and decoding a plurality of signals
GB8330885D0 (en) * 1983-11-18 1983-12-29 British Telecomm Data transmission

Also Published As

Publication number Publication date
EP0176243A2 (de) 1986-04-02
US4949383A (en) 1990-08-14
EP0176243A3 (en) 1986-12-30
CA1248234A (en) 1989-01-03
EP0176243B1 (de) 1990-03-07
ATE50896T1 (de) 1990-03-15
JPH0525408B2 (de) 1993-04-12
JPS61112433A (ja) 1986-05-30
GB8421498D0 (en) 1984-09-26

Similar Documents

Publication Publication Date Title
DE3576444D1 (de) Sprachkodierung im frequenzbereich.
US4427848B1 (en) Telephonic alphanumeric data transmission system
CA1294072C (en) Speech processing system
ATE136147T1 (de) Adaptiv bitzuordnung für audio-koder und dekoder
GB2030428B (en) Speech signal transform coding
KR910700526A (ko) 고품질 오디오용 저속 비트 변환 코더, 디코더 및 인코더/디코더
SE7613468L (sv) Forfarande och anordning for kodning av en talsignal
DE3472873D1 (en) Digital audio transmission
PT1125276E (pt) Metodo e dispositivo para pesquisa de altura de som de banda larga adaptativa na codificacao de sinais de banda larga
DE69418994T2 (de) Kodier- und Dekodierapparat welcher keine Tonqualität verschlechtert, sogar wenn ein Sinuswellen-Signal dekodiert wird
DK0520068T3 (da) Koder/dekoder for flerdimensionale lydfelter
EP0259553A3 (en) Table controlled dynamic bit allocation in a variable rate sub-band speech coder
US4589130A (en) Multirate digital transmission method and device for implementing said method
WO1995010760A3 (en) Improved low bit rate vocoders and methods of operation therefor
DE68915758D1 (de) Blockkodierungsschema für die Übertragung von partiellen Bits.
JPS5129808A (de)
Honda et al. Bit allocation in time and frequency domains for predictive coding of speech
SE9403630L (sv) Sätt att åstadkomma ett spektralbrusviktningsfilter att använda i en talkodare
CA2085384A1 (en) Speech encoding and decoding capable of improving a speech quality
GB8326719D0 (en) Digital coding
MX157218A (es) Produccion de etilen-glicol por la reaccion de metano,un peroxido organico y formaldehido
JPS54145415A (en) Hybrid terminal equipment
Mikhael et al. Direct coding of a class of non-stationary signals based on mixed transforms
Gibson et al. Experimental comparison of forward and backward adaptive prediction in DPCM
Mariño Acebal et al. Adaptive prediction and bit-assignment in subband coding of speech

Legal Events

Date Code Title Description
8364 No opposition during term of opposition