CA2058984C - Polyphonic coding - Google Patents
Polyphonic codingInfo
- Publication number
- CA2058984C CA2058984C CA002058984A CA2058984A CA2058984C CA 2058984 C CA2058984 C CA 2058984C CA 002058984 A CA002058984 A CA 002058984A CA 2058984 A CA2058984 A CA 2058984A CA 2058984 C CA2058984 C CA 2058984C
- Authority
- CA
- Canada
- Prior art keywords
- filter
- signal
- channel
- sum
- difference
- 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 claims abstract description 31
- 238000000034 method Methods 0.000 claims description 18
- 230000003595 spectral effect Effects 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 5
- 230000004044 response Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims 2
- 238000011144 upstream manufacturing Methods 0.000 claims 2
- 230000002087 whitening effect Effects 0.000 abstract description 13
- 230000006978 adaptation Effects 0.000 abstract description 7
- 230000002829 reductive effect Effects 0.000 abstract description 4
- 238000012546 transfer Methods 0.000 description 13
- 230000005540 biological transmission Effects 0.000 description 12
- 230000008901 benefit Effects 0.000 description 6
- 230000001934 delay Effects 0.000 description 5
- 230000001364 causal effect Effects 0.000 description 4
- 230000003111 delayed effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000009795 derivation Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000010561 standard procedure Methods 0.000 description 2
- 241000490229 Eucephalus Species 0.000 description 1
- 102000020897 Formins Human genes 0.000 description 1
- 108091022623 Formins Proteins 0.000 description 1
- RJKFOVLPORLFTN-LEKSSAKUSA-N Progesterone Chemical compound C1CC2=CC(=O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H](C(=O)C)[C@@]1(C)CC2 RJKFOVLPORLFTN-LEKSSAKUSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003679 aging effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000012505 colouration Methods 0.000 description 1
- 238000010219 correlation analysis Methods 0.000 description 1
- 238000005314 correlation function Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000002592 echocardiography Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000013383 initial experiment Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/86—Arrangements characterised by the broadcast information itself
- H04H20/88—Stereophonic broadcast systems
-
- 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
- G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Multimedia (AREA)
- Computational Linguistics (AREA)
- Mathematical Physics (AREA)
- Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Stereophonic System (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8913758.2 | 1989-06-15 | ||
| GB898913758A GB8913758D0 (en) | 1989-06-15 | 1989-06-15 | Polyphonic coding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2058984A1 CA2058984A1 (en) | 1990-12-16 |
| CA2058984C true CA2058984C (en) | 1998-12-01 |
Family
ID=10658483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002058984A Expired - Lifetime CA2058984C (en) | 1989-06-15 | 1990-06-15 | Polyphonic coding |
Country Status (13)
| Country | Link |
|---|---|
| EP (1) | EP0478615B2 (de) |
| JP (1) | JP2703405B2 (de) |
| AT (1) | ATE121900T1 (de) |
| AU (1) | AU640667B2 (de) |
| CA (1) | CA2058984C (de) |
| DE (1) | DE69018989T3 (de) |
| DK (1) | DK0478615T3 (de) |
| ES (1) | ES2071823T3 (de) |
| FI (1) | FI915873A0 (de) |
| GB (1) | GB8913758D0 (de) |
| HK (1) | HK137196A (de) |
| NO (1) | NO180030C (de) |
| WO (1) | WO1990016136A1 (de) |
Families Citing this family (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2077662C (en) * | 1991-01-08 | 2001-04-17 | Mark Franklin Davis | Encoder/decoder for multidimensional sound fields |
| US5274740A (en) * | 1991-01-08 | 1993-12-28 | Dolby Laboratories Licensing Corporation | Decoder for variable number of channel presentation of multidimensional sound fields |
| DE4136825C1 (de) * | 1991-11-08 | 1993-03-18 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung Ev, 8000 Muenchen, De | |
| US5278909A (en) * | 1992-06-08 | 1994-01-11 | International Business Machines Corporation | System and method for stereo digital audio compression with co-channel steering |
| EP0608937B1 (de) * | 1993-01-27 | 2000-04-12 | Koninklijke Philips Electronics N.V. | Tonsignalverarbeitungsanordnung zur Ableitung eines Mittelkanalsignals und audiovisuelles Wiedergabesystem mit solcher Verarbeitungsanordnung |
| DE4320990B4 (de) * | 1993-06-05 | 2004-04-29 | Robert Bosch Gmbh | Verfahren zur Redundanzreduktion |
| US5488665A (en) * | 1993-11-23 | 1996-01-30 | At&T Corp. | Multi-channel perceptual audio compression system with encoding mode switching among matrixed channels |
| GB2303516A (en) * | 1995-07-20 | 1997-02-19 | Plessey Telecomm | Teleconferencing |
| DE19526366A1 (de) | 1995-07-20 | 1997-01-23 | Bosch Gmbh Robert | Verfahren zur Redundanzreduktion bei der Codierung von mehrkanaligen Signalen und Vorrichtung zur Dekodierung von redundanzreduzierten, mehrkanaligen Signalen |
| US6016473A (en) * | 1998-04-07 | 2000-01-18 | Dolby; Ray M. | Low bit-rate spatial coding method and system |
| DE19829284C2 (de) * | 1998-05-15 | 2000-03-16 | Fraunhofer Ges Forschung | Verfahren und Vorrichtung zum Verarbeiten eines zeitlichen Stereosignals und Verfahren und Vorrichtung zum Decodieren eines unter Verwendung einer Prädiktion über der Frequenz codierten Audiobitstroms |
| SE519552C2 (sv) * | 1998-09-30 | 2003-03-11 | Ericsson Telefon Ab L M | Flerkanalig signalkodning och -avkodning |
| SE519985C2 (sv) * | 2000-09-15 | 2003-05-06 | Ericsson Telefon Ab L M | Kodning och avkodning av signaler från flera kanaler |
| SE519981C2 (sv) * | 2000-09-15 | 2003-05-06 | Ericsson Telefon Ab L M | Kodning och avkodning av signaler från flera kanaler |
| SE519976C2 (sv) | 2000-09-15 | 2003-05-06 | Ericsson Telefon Ab L M | Kodning och avkodning av signaler från flera kanaler |
| FR2821475B1 (fr) * | 2001-02-23 | 2003-05-09 | France Telecom | Procede et dispositif de reconstruction spectrale de signaux a plusieurs voies, notamment de signaux stereophoniques |
| US7835918B2 (en) * | 2004-11-04 | 2010-11-16 | Koninklijke Philips Electronics N.V. | Encoding and decoding a set of signals |
| CN103716748A (zh) * | 2007-03-01 | 2014-04-09 | 杰里·马哈布比 | 音频空间化及环境模拟 |
| CN101981616A (zh) * | 2008-04-04 | 2011-02-23 | 松下电器产业株式会社 | 立体声信号变换装置、立体声信号逆变换装置及其方法 |
| KR101629862B1 (ko) * | 2008-05-23 | 2016-06-24 | 코닌클리케 필립스 엔.브이. | 파라메트릭 스테레오 업믹스 장치, 파라메트릭 스테레오 디코더, 파라메트릭 스테레오 다운믹스 장치, 파라메트릭 스테레오 인코더 |
| ES2810824T3 (es) | 2010-04-09 | 2021-03-09 | Dolby Int Ab | Sistema decodificador, método de decodificación y programa informático respectivo |
| EP2375409A1 (de) | 2010-04-09 | 2011-10-12 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Audiocodierer, Audiodecodierer und zugehörige Verfahren zur Verarbeitung von Mehrkanal-Audiosignalen mithilfe einer komplexen Vorhersage |
| BR122020024855B1 (pt) * | 2010-04-13 | 2021-03-30 | Fraunhofer - Gesellschaft Zur Forderung Der Angewandten Forschung E. V. | Codificador de áudio ou vídeo, decodificador de áudio ou vídeo e métodos relacionados para o processamento do sinal de áudio ou vídeo de múltiplos canais usando uma direção de previsão variável |
| UA107771C2 (en) * | 2011-09-29 | 2015-02-10 | Dolby Int Ab | Prediction-based fm stereo radio noise reduction |
| US9380387B2 (en) | 2014-08-01 | 2016-06-28 | Klipsch Group, Inc. | Phase independent surround speaker |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU546069B2 (en) * | 1981-09-07 | 1985-08-15 | Kahn, Leonard Richard | Am stereo distortion correction |
| JPH0761043B2 (ja) * | 1986-04-10 | 1995-06-28 | 株式会社東芝 | ステレオ音声伝送蓄積方式 |
| GB8628046D0 (en) * | 1986-11-24 | 1986-12-31 | British Telecomm | Transmission system |
-
1989
- 1989-06-15 GB GB898913758A patent/GB8913758D0/en active Pending
-
1990
- 1990-06-15 AT AT90909155T patent/ATE121900T1/de not_active IP Right Cessation
- 1990-06-15 EP EP90909155A patent/EP0478615B2/de not_active Expired - Lifetime
- 1990-06-15 DE DE69018989T patent/DE69018989T3/de not_active Expired - Lifetime
- 1990-06-15 ES ES90909155T patent/ES2071823T3/es not_active Expired - Lifetime
- 1990-06-15 JP JP2508936A patent/JP2703405B2/ja not_active Expired - Lifetime
- 1990-06-15 WO PCT/GB1990/000928 patent/WO1990016136A1/en active IP Right Grant
- 1990-06-15 CA CA002058984A patent/CA2058984C/en not_active Expired - Lifetime
- 1990-06-15 AU AU58379/90A patent/AU640667B2/en not_active Ceased
- 1990-06-15 DK DK90909155.5T patent/DK0478615T3/da active
-
1991
- 1991-12-13 NO NO914947A patent/NO180030C/no unknown
- 1991-12-13 FI FI915873A patent/FI915873A0/fi unknown
-
1996
- 1996-07-25 HK HK137196A patent/HK137196A/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| NO180030C (no) | 1997-01-29 |
| GB8913758D0 (en) | 1989-08-02 |
| ATE121900T1 (de) | 1995-05-15 |
| DE69018989T3 (de) | 1998-11-19 |
| FI915873A0 (fi) | 1991-12-13 |
| DE69018989D1 (de) | 1995-06-01 |
| EP0478615B1 (de) | 1995-04-26 |
| WO1990016136A1 (en) | 1990-12-27 |
| NO180030B (no) | 1996-10-21 |
| CA2058984A1 (en) | 1990-12-16 |
| DK0478615T3 (da) | 1995-07-17 |
| EP0478615A1 (de) | 1992-04-08 |
| AU5837990A (en) | 1991-01-08 |
| JPH04506141A (ja) | 1992-10-22 |
| NO914947D0 (no) | 1991-12-13 |
| ES2071823T3 (es) | 1995-07-01 |
| JP2703405B2 (ja) | 1998-01-26 |
| AU640667B2 (en) | 1993-09-02 |
| NO914947L (no) | 1992-02-13 |
| EP0478615B2 (de) | 1998-04-15 |
| DE69018989T2 (de) | 1995-09-07 |
| HK137196A (en) | 1996-08-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry | ||
| MKEX | Expiry |
Effective date: 20100615 |