HK1115665A1 - Fidelity-optimised pre-echo suppressing encoding - Google Patents
Fidelity-optimised pre-echo suppressing encodingInfo
- Publication number
- HK1115665A1 HK1115665A1 HK08106066.8A HK08106066A HK1115665A1 HK 1115665 A1 HK1115665 A1 HK 1115665A1 HK 08106066 A HK08106066 A HK 08106066A HK 1115665 A1 HK1115665 A1 HK 1115665A1
- Authority
- HK
- Hong Kong
- Prior art keywords
- signal
- encoding
- mono
- fidelity
- channel
- 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)
- Mobile Radio Communication Systems (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (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 (3)
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 |
HK06112026.7A HK1091585A1 (en) | 2003-12-19 | 2006-11-01 | Fidelity-optimised variable frame length encoding |
Publications (1)
Publication Number | Publication Date |
---|---|
HK1115665A1 true HK1115665A1 (en) | 2008-12-05 |
Family
ID=31996354
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HK08106066.8A HK1115665A1 (en) | 2003-12-19 | 2006-11-01 | Fidelity-optimised pre-echo suppressing encoding |
HK06112026.7A HK1091585A1 (en) | 2003-12-19 | 2006-11-01 | Fidelity-optimised variable frame length encoding |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HK06112026.7A HK1091585A1 (en) | 2003-12-19 | 2006-11-01 | Fidelity-optimised variable frame length encoding |
Country Status (15)
Country | Link |
---|---|
EP (2) | EP1623411B1 (en) |
JP (2) | JP4335917B2 (en) |
CN (2) | CN100559465C (en) |
AT (2) | ATE443317T1 (en) |
AU (1) | AU2004298708B2 (en) |
BR (2) | BRPI0419281B1 (en) |
CA (2) | CA2690885C (en) |
DE (2) | DE602004023240D1 (en) |
HK (2) | HK1115665A1 (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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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 |
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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 |
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BRPI0908630B1 (en) | 2008-05-23 | 2020-09-15 | Koninklijke Philips N.V. | PARAMETRIC STEREO 'UPMIX' APPLIANCE, PARAMETRIC STEREO DECODER, METHOD FOR GENERATING A LEFT SIGN AND A RIGHT SIGN FROM A MONO 'DOWNMIX' SIGN BASED ON SPATIAL PARAMETERS, AUDIO EXECUTION DEVICE, DEVICE FOR AUDIO EXECUTION. DOWNMIX 'STEREO PARAMETRIC, STEREO PARAMETRIC ENCODER, METHOD FOR GENERATING A RESIDUAL FORECAST SIGNAL FOR A DIFFERENCE SIGNAL FROM A LEFT SIGN AND A RIGHT SIGNAL BASED ON SPACE PARAMETERS, AND PRODUCT PRODUCT PRODUCTS. |
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 |
KR101655913B1 (en) * | 2008-09-17 | 2016-09-08 | 오렌지 | Pre-echo attenuation in a digital audio signal |
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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CN109215668B (en) * | 2017-06-30 | 2021-01-05 | 华为技术有限公司 | Method and device for encoding inter-channel phase difference parameters |
CN115831130A (en) | 2018-06-29 | 2023-03-21 | 华为技术有限公司 | Coding method, decoding method, coding device and decoding device for stereo 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 CA CA2690885A patent/CA2690885C/en active Active
- 2004-12-15 RU RU2005134365/09A patent/RU2305870C2/en active
- 2004-12-15 BR BRPI0419281-8A patent/BRPI0419281B1/en not_active IP Right Cessation
- 2004-12-15 CN CNB2004800186630A patent/CN100559465C/en active Active
- 2004-12-15 CN CN200710138487XA patent/CN101118747B/en not_active Expired - Fee Related
- 2004-12-15 PL PL04820553T patent/PL1623411T3/en unknown
- 2004-12-15 AU AU2004298708A patent/AU2004298708B2/en not_active Ceased
- 2004-12-15 DE DE602004023240T patent/DE602004023240D1/en active Active
- 2004-12-15 CA CA2527971A patent/CA2527971C/en active Active
- 2004-12-15 EP EP04820553A patent/EP1623411B1/en not_active Not-in-force
- 2004-12-15 AT AT07109801T patent/ATE443317T1/en not_active IP Right Cessation
- 2004-12-15 WO PCT/SE2004/001867 patent/WO2005059899A1/en active IP Right Grant
- 2004-12-15 JP JP2006518596A patent/JP4335917B2/en not_active Expired - Fee Related
- 2004-12-15 ZA ZA200508980A patent/ZA200508980B/en unknown
- 2004-12-15 BR BRPI0410856A patent/BRPI0410856B8/en not_active IP Right Cessation
- 2004-12-15 AT AT04820553T patent/ATE371924T1/en not_active IP Right Cessation
- 2004-12-15 DE DE602004008613T patent/DE602004008613T2/en active Active
- 2004-12-15 EP EP07109801A patent/EP1845519B1/en active Active
-
2006
- 2006-11-01 HK HK08106066.8A patent/HK1115665A1/en not_active IP Right Cessation
- 2006-11-01 HK HK06112026.7A patent/HK1091585A1/en not_active IP Right Cessation
-
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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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PC | Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee) |
Effective date: 20231215 |