PL1623411T3 - Fidelity-optimised variable frame length encoding - Google Patents
Fidelity-optimised variable frame length encodingInfo
- Publication number
- PL1623411T3 PL1623411T3 PL04820553T PL04820553T PL1623411T3 PL 1623411 T3 PL1623411 T3 PL 1623411T3 PL 04820553 T PL04820553 T PL 04820553T PL 04820553 T PL04820553 T PL 04820553T PL 1623411 T3 PL1623411 T3 PL 1623411T3
- Authority
- PL
- Poland
- Prior art keywords
- signal
- mono
- encoding
- fidelity
- frame length
- Prior art date
Links
- 230000005236 sound signal Effects 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
- G10L19/008—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
- G10L19/16—Vocoder architecture
- G10L19/18—Vocoders using multiple modes
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Computational Linguistics (AREA)
- Mathematical Physics (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
- Mobile Radio Communication Systems (AREA)
- Compression Of Band Width Or Redundancy In Fax (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Endoscopes (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
A method of encoding multi-channel audio signals comprises generating of a first output signal (x' mono ), being encoding (38) parameters representing a main signal (x mono ). The main signal (x mono ) is a first linear combination (34) of signals (16A,16B) of at least a first and a second channel. The method further comprises generating (30) of a second output signal (p side ), being encoding parameters representing a side signal (x side ). The side signal (x side ) is a second linear combination (36) of signals (16A,16B) of at least the first and the second channel within an encoding frame. The method is characterised in that the generating of the second output signal further comprises scaling of the side signal (x side ) to an energy contour of the main signal (x mono ). A method of decoding is also presented as well as an encoder, a decoder and audio system, all according to the same basic idea.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0303501A SE0303501D0 (en) | 2003-12-19 | 2003-12-19 | Filter-based parametric multi-channel coding |
SE0400417A SE527670C2 (en) | 2003-12-19 | 2004-02-20 | Natural fidelity optimized coding with variable frame length |
EP04820553A EP1623411B1 (en) | 2003-12-19 | 2004-12-15 | Fidelity-optimised variable frame length encoding |
PCT/SE2004/001867 WO2005059899A1 (en) | 2003-12-19 | 2004-12-15 | Fidelity-optimised variable frame length encoding |
Publications (1)
Publication Number | Publication Date |
---|---|
PL1623411T3 true PL1623411T3 (en) | 2008-01-31 |
Family
ID=31996354
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PL04820553T PL1623411T3 (en) | 2003-12-19 | 2004-12-15 | Fidelity-optimised variable frame length encoding |
Country Status (15)
Country | Link |
---|---|
EP (2) | EP1845519B1 (en) |
JP (2) | JP4335917B2 (en) |
CN (2) | CN100559465C (en) |
AT (2) | ATE443317T1 (en) |
AU (1) | AU2004298708B2 (en) |
BR (2) | BRPI0410856B8 (en) |
CA (2) | CA2690885C (en) |
DE (2) | DE602004008613T2 (en) |
HK (2) | HK1091585A1 (en) |
MX (1) | MXPA05012230A (en) |
PL (1) | PL1623411T3 (en) |
RU (2) | RU2305870C2 (en) |
SE (1) | SE527670C2 (en) |
WO (1) | WO2005059899A1 (en) |
ZA (1) | ZA200508980B (en) |
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US8032240B2 (en) | 2005-07-11 | 2011-10-04 | Lg Electronics Inc. | Apparatus and method of processing an audio signal |
US8577483B2 (en) | 2005-08-30 | 2013-11-05 | Lg Electronics, Inc. | Method for decoding an audio signal |
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US8068569B2 (en) | 2005-10-05 | 2011-11-29 | Lg Electronics, Inc. | Method and apparatus for signal processing and encoding and decoding |
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KR100857115B1 (en) | 2005-10-05 | 2008-09-05 | 엘지전자 주식회사 | Method and apparatus for signal processing and encoding and decoding method, and apparatus therefor |
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US7672379B2 (en) | 2005-10-05 | 2010-03-02 | Lg Electronics Inc. | Audio signal processing, encoding, and decoding |
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US7461106B2 (en) | 2006-09-12 | 2008-12-02 | Motorola, Inc. | Apparatus and method for low complexity combinatorial coding of signals |
US8576096B2 (en) | 2007-10-11 | 2013-11-05 | Motorola Mobility Llc | Apparatus and method for low complexity combinatorial coding of signals |
US8209190B2 (en) | 2007-10-25 | 2012-06-26 | Motorola Mobility, Inc. | Method and apparatus for generating an enhancement layer within an audio coding system |
US7889103B2 (en) | 2008-03-13 | 2011-02-15 | Motorola Mobility, Inc. | Method and apparatus for low complexity combinatorial coding of signals |
US8639519B2 (en) | 2008-04-09 | 2014-01-28 | Motorola Mobility Llc | Method and apparatus for selective signal coding based on core encoder performance |
EP2124486A1 (en) * | 2008-05-13 | 2009-11-25 | Clemens Par | Angle-dependent operating device or method for generating a pseudo-stereophonic audio signal |
EP2283483B1 (en) * | 2008-05-23 | 2013-03-13 | Koninklijke Philips Electronics N.V. | A parametric stereo upmix apparatus, a parametric stereo decoder, a parametric stereo downmix apparatus, a parametric stereo encoder |
WO2010016270A1 (en) * | 2008-08-08 | 2010-02-11 | パナソニック株式会社 | Quantizing device, encoding device, quantizing method, and encoding method |
JP5295372B2 (en) * | 2008-09-17 | 2013-09-18 | フランス・テレコム | Pre-echo attenuation in digital audio signals |
JP5309944B2 (en) | 2008-12-11 | 2013-10-09 | 富士通株式会社 | Audio decoding apparatus, method, and program |
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US8175888B2 (en) | 2008-12-29 | 2012-05-08 | Motorola Mobility, Inc. | Enhanced layered gain factor balancing within a multiple-channel audio coding system |
US8140342B2 (en) | 2008-12-29 | 2012-03-20 | Motorola Mobility, Inc. | Selective scaling mask computation based on peak detection |
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JP5793675B2 (en) * | 2009-07-31 | 2015-10-14 | パナソニックIpマネジメント株式会社 | Encoding device and decoding device |
US8977546B2 (en) * | 2009-10-20 | 2015-03-10 | Panasonic Intellectual Property Corporation Of America | Encoding device, decoding device and method for both |
EP2346028A1 (en) * | 2009-12-17 | 2011-07-20 | Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V. | An apparatus and a method for converting a first parametric spatial audio signal into a second parametric spatial audio signal |
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2004
- 2004-02-20 SE SE0400417A patent/SE527670C2/en unknown
- 2004-12-15 MX MXPA05012230A patent/MXPA05012230A/en active IP Right Grant
- 2004-12-15 JP JP2006518596A patent/JP4335917B2/en not_active Expired - Fee Related
- 2004-12-15 BR BRPI0410856A patent/BRPI0410856B8/en active IP Right Grant
- 2004-12-15 RU RU2005134365/09A patent/RU2305870C2/en active
- 2004-12-15 AU AU2004298708A patent/AU2004298708B2/en active Active
- 2004-12-15 AT AT07109801T patent/ATE443317T1/en not_active IP Right Cessation
- 2004-12-15 DE DE602004008613T patent/DE602004008613T2/en active Active
- 2004-12-15 PL PL04820553T patent/PL1623411T3/en unknown
- 2004-12-15 AT AT04820553T patent/ATE371924T1/en not_active IP Right Cessation
- 2004-12-15 CN CNB2004800186630A patent/CN100559465C/en active Active
- 2004-12-15 EP EP07109801A patent/EP1845519B1/en active Active
- 2004-12-15 ZA ZA200508980A patent/ZA200508980B/en unknown
- 2004-12-15 CN CN200710138487XA patent/CN101118747B/en not_active Expired - Fee Related
- 2004-12-15 EP EP04820553A patent/EP1623411B1/en active Active
- 2004-12-15 CA CA2690885A patent/CA2690885C/en active Active
- 2004-12-15 BR BRPI0419281-8A patent/BRPI0419281B1/en not_active IP Right Cessation
- 2004-12-15 CA CA2527971A patent/CA2527971C/en active Active
- 2004-12-15 DE DE602004023240T patent/DE602004023240D1/en active Active
- 2004-12-15 WO PCT/SE2004/001867 patent/WO2005059899A1/en active IP Right Grant
-
2006
- 2006-11-01 HK HK06112026.7A patent/HK1091585A1/en unknown
- 2006-11-01 HK HK08106066.8A patent/HK1115665A1/en unknown
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2007
- 2007-06-05 RU RU2007121143/09A patent/RU2425340C2/en active
- 2007-08-22 JP JP2007216374A patent/JP4589366B2/en not_active Expired - Fee Related
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