ES2085680T5 - Asignacion adaptativa de bits para un codificador y un descodificador de audio. - Google Patents
Asignacion adaptativa de bits para un codificador y un descodificador de audio.Info
- Publication number
- ES2085680T5 ES2085680T5 ES93108874T ES93108874T ES2085680T5 ES 2085680 T5 ES2085680 T5 ES 2085680T5 ES 93108874 T ES93108874 T ES 93108874T ES 93108874 T ES93108874 T ES 93108874T ES 2085680 T5 ES2085680 T5 ES 2085680T5
- Authority
- ES
- Spain
- Prior art keywords
- encoder
- audio decoder
- bits assignment
- adaptive bits
- adaptive
- 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
Links
- 230000003044 adaptive effect Effects 0.000 title abstract 2
- 230000003595 spectral effect Effects 0.000 abstract 2
- 238000013139 quantization Methods 0.000 abstract 1
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
- G10L19/02—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
- G10L19/0212—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 orthogonal transformation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T9/00—Image coding
- G06T9/005—Statistical coding, e.g. Huffman, run length coding
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10527—Audio or video recording; Data buffering arrangements
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
- G11B20/1806—Pulse code modulation systems for audio signals
- G11B20/1809—Pulse code modulation systems for audio signals by interleaving
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M5/00—Conversion of the form of the representation of individual digits
- H03M5/02—Conversion to or from representation by pulses
- H03M5/04—Conversion to or from representation by pulses the pulses having two levels
-
- 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
- H04B1/665—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 psychoacoustic properties of the ear, e.g. masking effect
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computational Linguistics (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Analogue/Digital Conversion (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Stereo-Broadcasting Methods (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Stereophonic System (AREA)
Abstract
UN SISTEMA CODIFICADOR, DECODIFICADOR Y CODIFICADOR/DECODIFICADOR HACE USO DE UNA CUANTIFICACION Y DISTRIBUCION DE BITS ADAPTABLE PARA CODIFICAR Y DECODIFICAR LA INFORMACION ESPECTRAL QUE SE ENCUENTRA DENTRO DE LAS SUBBANDAS DE FRECUENCIA. SEGUN LOS NIVELES ESPECTRALES DENTRO DE UNA SUBBANDA RESPECTIVA, LOS BITS SE DISTRIBUYEN DE FORMA ADAPTADA A LAS REPRESENTACIONES DE LA INFORMACION DE LA SUBBANDA CORRESPONDIENTE Y DE SUBBANDAS ADYACENTES.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US30371489A | 1989-01-27 | 1989-01-27 | |
US43986889A | 1989-11-20 | 1989-11-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
ES2085680T3 ES2085680T3 (es) | 1996-06-01 |
ES2085680T5 true ES2085680T5 (es) | 2002-10-16 |
Family
ID=26973611
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES93108874T Expired - Lifetime ES2085680T5 (es) | 1989-01-27 | 1990-01-29 | Asignacion adaptativa de bits para un codificador y un descodificador de audio. |
ES92112940T Expired - Lifetime ES2099185T3 (es) | 1989-01-27 | 1990-01-29 | Codificador, descodificador y codificador/descodificador de transformada de baja frecuencia de bits para aplicaciones de audio de alta calidad. |
ES92112939T Expired - Lifetime ES2109296T3 (es) | 1989-01-27 | 1990-01-29 | Codificador, descodificador y codificador/descodificador con transformacion de baja frecuencia de bits para audioinformacion de alta calidad. |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES92112940T Expired - Lifetime ES2099185T3 (es) | 1989-01-27 | 1990-01-29 | Codificador, descodificador y codificador/descodificador de transformada de baja frecuencia de bits para aplicaciones de audio de alta calidad. |
ES92112939T Expired - Lifetime ES2109296T3 (es) | 1989-01-27 | 1990-01-29 | Codificador, descodificador y codificador/descodificador con transformacion de baja frecuencia de bits para audioinformacion de alta calidad. |
Country Status (10)
Country | Link |
---|---|
EP (5) | EP0514949B1 (es) |
JP (1) | JP2821713B2 (es) |
AT (4) | ATE136147T1 (es) |
AU (2) | AU631404B2 (es) |
BR (1) | BR9007063A (es) |
DE (4) | DE69031737T2 (es) |
DK (3) | DK0560413T4 (es) |
ES (3) | ES2085680T5 (es) |
SG (3) | SG48247A1 (es) |
WO (1) | WO1990009022A1 (es) |
Families Citing this family (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2087522T3 (es) * | 1991-01-08 | 1996-07-16 | Dolby Lab Licensing Corp | Descodificacion/codificacion para campos sonoros multidimensionales. |
JP3123290B2 (ja) * | 1993-03-09 | 2001-01-09 | ソニー株式会社 | 圧縮データ記録装置及び方法、圧縮データ再生方法、記録媒体 |
US5463424A (en) * | 1993-08-03 | 1995-10-31 | Dolby Laboratories Licensing Corporation | Multi-channel transmitter/receiver system providing matrix-decoding compatible signals |
JP3131542B2 (ja) * | 1993-11-25 | 2001-02-05 | シャープ株式会社 | 符号化復号化装置 |
JP3186413B2 (ja) * | 1994-04-01 | 2001-07-11 | ソニー株式会社 | データ圧縮符号化方法、データ圧縮符号化装置及びデータ記録媒体 |
US6167093A (en) * | 1994-08-16 | 2000-12-26 | Sony Corporation | Method and apparatus for encoding the information, method and apparatus for decoding the information and method for information transmission |
JPH08190764A (ja) * | 1995-01-05 | 1996-07-23 | Sony Corp | ディジタル信号処理方法、ディジタル信号処理装置及び記録媒体 |
JP3521596B2 (ja) * | 1996-01-30 | 2004-04-19 | ソニー株式会社 | 信号符号化方法 |
JP4033906B2 (ja) * | 1996-03-19 | 2008-01-16 | 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 | 時間領域エイリアシング相殺を用いる効率的奇数積重ね単一側波帯フィルタバンクを有する分析・合成濾波システム |
US5890106A (en) * | 1996-03-19 | 1999-03-30 | Dolby Laboratories Licensing Corporation | Analysis-/synthesis-filtering system with efficient oddly-stacked singleband filter bank using time-domain aliasing cancellation |
KR100378790B1 (ko) * | 1996-04-23 | 2003-05-01 | 엘지전자 주식회사 | 서브밴드양자화레벨디코딩장치 |
KR100223169B1 (ko) * | 1996-06-14 | 1999-10-15 | 윤종용 | 펄스부호변조된 디지털 오디오신호의 기록 및 재생을 위한 시스템 |
US5892746A (en) * | 1996-06-15 | 1999-04-06 | Samsung Electronics Co., Ltd. | System for recording and/or reproducing a pulse code modulation digital audio signal |
JP3092653B2 (ja) * | 1996-06-21 | 2000-09-25 | 日本電気株式会社 | 広帯域音声符号化装置及び音声復号装置並びに音声符号化復号装置 |
TW301103B (en) * | 1996-09-07 | 1997-03-21 | Nat Science Council | The time domain alias cancellation device and its signal processing method |
JPH1083623A (ja) * | 1996-09-10 | 1998-03-31 | Sony Corp | 信号記録方法、信号記録装置、記録媒体および信号処理方法 |
GB2326572A (en) * | 1997-06-19 | 1998-12-23 | Softsound Limited | Low bit rate audio coder and decoder |
US6081783A (en) * | 1997-11-14 | 2000-06-27 | Cirrus Logic, Inc. | Dual processor digital audio decoder with shared memory data transfer and task partitioning for decompressing compressed audio data, and systems and methods using the same |
US6016473A (en) * | 1998-04-07 | 2000-01-18 | Dolby; Ray M. | Low bit-rate spatial coding method and system |
US6665409B1 (en) | 1999-04-12 | 2003-12-16 | Cirrus Logic, Inc. | Methods for surround sound simulation and circuits and systems using the same |
US6356871B1 (en) | 1999-06-14 | 2002-03-12 | Cirrus Logic, Inc. | Methods and circuits for synchronizing streaming data and systems using the same |
US6349285B1 (en) | 1999-06-28 | 2002-02-19 | Cirrus Logic, Inc. | Audio bass management methods and circuits and systems using the same |
JP2002135122A (ja) | 2000-10-19 | 2002-05-10 | Nec Corp | オーディオ信号符号化装置 |
US7016502B2 (en) | 2000-12-22 | 2006-03-21 | Sony Corporation | Encoder and decoder |
US7123655B2 (en) | 2001-08-09 | 2006-10-17 | Sharp Laboratories Of America, Inc. | Method for reduced bit-depth quantization |
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 |
US7240001B2 (en) | 2001-12-14 | 2007-07-03 | Microsoft Corporation | Quality improvement techniques in an audio encoder |
CA2672165C (en) | 2006-12-12 | 2014-07-29 | Ralf Geiger | Encoder, decoder and methods for encoding and decoding data segments representing a time-domain data stream |
US7885819B2 (en) | 2007-06-29 | 2011-02-08 | Microsoft Corporation | Bitstream syntax for multi-process audio decoding |
WO2009109373A2 (en) * | 2008-03-04 | 2009-09-11 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus for mixing a plurality of input data streams |
KR100940532B1 (ko) * | 2009-09-28 | 2010-02-10 | 삼성전자주식회사 | 저비트율 복호화방법 및 장치 |
EP2849180B1 (en) * | 2012-05-11 | 2020-01-01 | Panasonic Corporation | Hybrid audio signal encoder, hybrid audio signal decoder, method for encoding audio signal, and method for decoding audio signal |
US10844689B1 (en) | 2019-12-19 | 2020-11-24 | Saudi Arabian Oil Company | Downhole ultrasonic actuator system for mitigating lost circulation |
WO2013173080A1 (en) | 2012-05-18 | 2013-11-21 | Dolby Laboratories Licensing Corporation | System for maintaining reversible dynamic range control information associated with parametric audio coders |
US10438597B2 (en) | 2017-08-31 | 2019-10-08 | Dolby International Ab | Decoder-provided time domain aliasing cancellation during lossy/lossless transitions |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0064119B1 (fr) * | 1981-04-30 | 1985-08-28 | International Business Machines Corporation | Perfectionnement aux procédés de codage de la voix et dispositif de mise en oeuvre du procédé perfectionné |
US4455649A (en) * | 1982-01-15 | 1984-06-19 | International Business Machines Corporation | Method and apparatus for efficient statistical multiplexing of voice and data signals |
GB8330885D0 (en) * | 1983-11-18 | 1983-12-29 | British Telecomm | Data transmission |
GB8421498D0 (en) * | 1984-08-24 | 1984-09-26 | British Telecomm | Frequency domain speech coding |
DE3506912A1 (de) † | 1985-02-27 | 1986-08-28 | Telefunken Fernseh Und Rundfunk Gmbh, 3000 Hannover | Verfahren zur uebertragung eines audiosignals |
IL76283A0 (en) * | 1985-09-03 | 1986-01-31 | Ibm | Process and system for coding signals |
DE3629434C2 (de) * | 1986-08-29 | 1994-07-28 | Karlheinz Dipl Ing Brandenburg | Digitales Codierverfahren |
DE3639753A1 (de) † | 1986-11-21 | 1988-06-01 | Inst Rundfunktechnik Gmbh | Verfahren zum uebertragen digitalisierter tonsignale |
NL8700985A (nl) * | 1987-04-27 | 1988-11-16 | Philips Nv | Systeem voor sub-band codering van een digitaal audiosignaal. |
NL8901032A (nl) * | 1988-11-10 | 1990-06-01 | Philips Nv | Coder om extra informatie op te nemen in een digitaal audiosignaal met een tevoren bepaald formaat, een decoder om deze extra informatie uit dit digitale signaal af te leiden, een inrichting voor het opnemen van een digitaal signaal op een registratiedrager, voorzien van de coder, en een registratiedrager verkregen met deze inrichting. |
-
1990
- 1990-01-29 JP JP2503825A patent/JP2821713B2/ja not_active Expired - Lifetime
- 1990-01-29 DE DE69031737T patent/DE69031737T2/de not_active Expired - Lifetime
- 1990-01-29 AT AT93108874T patent/ATE136147T1/de not_active IP Right Cessation
- 1990-01-29 AT AT90903518T patent/ATE100235T1/de not_active IP Right Cessation
- 1990-01-29 SG SG1996008275A patent/SG48247A1/en unknown
- 1990-01-29 DK DK93108874T patent/DK0560413T4/da active
- 1990-01-29 DK DK92112939T patent/DK0514949T3/da active
- 1990-01-29 ES ES93108874T patent/ES2085680T5/es not_active Expired - Lifetime
- 1990-01-29 DE DE69026278T patent/DE69026278T3/de not_active Expired - Lifetime
- 1990-01-29 EP EP92112939A patent/EP0514949B1/en not_active Expired - Lifetime
- 1990-01-29 DK DK92112940.9T patent/DK0513860T3/da active
- 1990-01-29 ES ES92112940T patent/ES2099185T3/es not_active Expired - Lifetime
- 1990-01-29 WO PCT/US1990/000501 patent/WO1990009022A1/en active IP Right Grant
- 1990-01-29 SG SG1996008335A patent/SG47111A1/en unknown
- 1990-01-29 EP EP90903518A patent/EP0455738B2/en not_active Expired - Lifetime
- 1990-01-29 DE DE69006011T patent/DE69006011T3/de not_active Expired - Lifetime
- 1990-01-29 EP EP92112940A patent/EP0513860B1/en not_active Expired - Lifetime
- 1990-01-29 AU AU51596/90A patent/AU631404B2/en not_active Expired
- 1990-01-29 EP EP19920112967 patent/EP0511692A3/en not_active Withdrawn
- 1990-01-29 SG SG1996008307A patent/SG49891A1/en unknown
- 1990-01-29 AT AT92112939T patent/ATE160464T1/de not_active IP Right Cessation
- 1990-01-29 AT AT92112940T patent/ATE150571T1/de not_active IP Right Cessation
- 1990-01-29 EP EP93108874A patent/EP0560413B2/en not_active Expired - Lifetime
- 1990-01-29 ES ES92112939T patent/ES2109296T3/es not_active Expired - Lifetime
- 1990-01-29 BR BR909007063A patent/BR9007063A/pt unknown
- 1990-01-29 DE DE69030266T patent/DE69030266T2/de not_active Expired - Lifetime
-
1993
- 1993-02-23 AU AU33736/93A patent/AU655535B2/en not_active Expired
Also Published As
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES2085680T5 (es) | Asignacion adaptativa de bits para un codificador y un descodificador de audio. | |
DE69418994D1 (de) | Kodier- und Dekodierapparat welcher keine Tonqualität verschlechtert, sogar wenn ein Sinuswellen-Signal dekodiert wird | |
ES2155449T3 (es) | Metodo y aparato para la codificacion, decodificacion y compresion de datos de tipo audio. | |
EP0650262A3 (en) | Perceptual coding of multi-channel audio signals with adaptive bit allocation. | |
DE3576444D1 (de) | Sprachkodierung im frequenzbereich. | |
DE69232251D1 (de) | Digitaler Kodierer mit dynamischer Quantisierungsbitverteilung | |
MY117039A (en) | Scalable audio coding/decoding method and apparatus | |
DE69033651D1 (de) | Verfahren und Vorrichtung mit Bitzuordnung zur Quantisierung und Dequantizierung von transformierten Sprachsignalen. | |
KR960704300A (ko) | 부호화 방법, 복호화 방법, 부호화/복호화 방법, 부호화 장치, 복호화 장치 및 부호화/복호화 장치(Encoding method, decoding method, encoding/decoding method, encoding apparatus, decoding apparatus, and encoding/decoding apparatus) | |
CA2085384A1 (en) | Speech encoding and decoding capable of improving a speech quality | |
DE69325865D1 (de) | Bitzuordnungsverfahren in Teilbandkodierung | |
Crochiere | A Mid‐Rise/Mid‐Tread Quantizer Switch for Improved Idle‐Channel Performance in Adaptive Coders | |
KR960011952A (ko) | 적응적 디지탈 오디오 부호화 장치 | |
KR950024449A (ko) | 적응적으로 각 프레임에 비트 할당하여 부호화하는 디지탈 오디오 부호화장치 | |
KR950010626A (ko) | 음향신호의 적응적 부호화 및 복호화장치 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
Ref document number: 560413 Country of ref document: ES |