NO20064472L - Frekvensbasert koding av audiokanaler i parametrisk multikanal kodesystem - Google Patents
Frekvensbasert koding av audiokanaler i parametrisk multikanal kodesystemInfo
- Publication number
- NO20064472L NO20064472L NO20064472A NO20064472A NO20064472L NO 20064472 L NO20064472 L NO 20064472L NO 20064472 A NO20064472 A NO 20064472A NO 20064472 A NO20064472 A NO 20064472A NO 20064472 L NO20064472 L NO 20064472L
- Authority
- NO
- Norway
- Prior art keywords
- frequency
- channels
- audio
- channel
- coding
- Prior art date
Links
- 230000005236 sound signal Effects 0.000 abstract 2
Classifications
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
- H04S2420/03—Application of parametric coding in stereophonic audio systems
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Mathematical Physics (AREA)
- Computational Linguistics (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Multimedia (AREA)
- Stereophonic System (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
For et multikanal audiosignal er parametrisk koding anvendt på forskjeUige subsett av audio iimgangskanaler for forskjellige frekvensområder. For eksempel, for et 5.1 surround lydsignal som har fem vanlige kanaler og en lavfrekvent (LFE) kanal, kan binaural cue koding (BCC) bli anvendt på alle seks audiokanaler for subbånd ved eller under en spesifikk grensefrekvens, men bare på fem audiokanaler (ekskluderende LFE-kanalen) for subbånd over grensefrekvensen. Slik frekvensbasert koding av kanaler kan redusere kodings- og dekodings- prosesseringslasten og/eller størrelsen av den kodede audiobitsfrøm relativ til parametriske kodingsteknikker som er anvendt på alle iimgangskanaler over hele frekvensområdet.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US54997204P | 2004-03-04 | 2004-03-04 | |
US10/827,900 US7805313B2 (en) | 2004-03-04 | 2004-04-20 | Frequency-based coding of channels in parametric multi-channel coding systems |
PCT/US2005/005605 WO2005094125A1 (en) | 2004-03-04 | 2005-02-23 | Frequency-based coding of audio channels in parametric multi-channel coding systems |
Publications (2)
Publication Number | Publication Date |
---|---|
NO20064472L true NO20064472L (no) | 2006-10-03 |
NO340421B1 NO340421B1 (no) | 2017-04-18 |
Family
ID=34915657
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO20064472A NO340421B1 (no) | 2004-03-04 | 2006-10-03 | Frekvensbasert koding av audiokanaler i parametrisk multikanal kodesystem |
Country Status (16)
Country | Link |
---|---|
US (1) | US7805313B2 (no) |
EP (1) | EP1721489B1 (no) |
JP (1) | JP4418493B2 (no) |
KR (1) | KR100717598B1 (no) |
AT (1) | ATE373402T1 (no) |
AU (1) | AU2005226536B2 (no) |
BR (1) | BRPI0508146B1 (no) |
CA (1) | CA2557993C (no) |
DE (1) | DE602005002463T2 (no) |
ES (1) | ES2293556T3 (no) |
HK (1) | HK1101634A1 (no) |
MX (1) | MXPA06009931A (no) |
NO (1) | NO340421B1 (no) |
PT (1) | PT1721489E (no) |
TW (1) | TWI376967B (no) |
WO (1) | WO2005094125A1 (no) |
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-
2004
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BRPI0508146B1 (pt) | 2019-04-16 |
US20050195981A1 (en) | 2005-09-08 |
DE602005002463T2 (de) | 2008-06-12 |
KR20060131866A (ko) | 2006-12-20 |
EP1721489B1 (en) | 2007-09-12 |
EP1721489A1 (en) | 2006-11-15 |
HK1101634A1 (en) | 2007-10-18 |
TWI376967B (en) | 2012-11-11 |
KR100717598B1 (ko) | 2007-05-15 |
BRPI0508146A (pt) | 2007-07-31 |
TW200603653A (en) | 2006-01-16 |
WO2005094125A1 (en) | 2005-10-06 |
ES2293556T3 (es) | 2008-03-16 |
ATE373402T1 (de) | 2007-09-15 |
CA2557993A1 (en) | 2005-10-06 |
JP4418493B2 (ja) | 2010-02-17 |
MXPA06009931A (es) | 2007-03-21 |
US7805313B2 (en) | 2010-09-28 |
AU2005226536A1 (en) | 2005-10-06 |
CA2557993C (en) | 2012-11-27 |
AU2005226536B2 (en) | 2008-09-04 |
PT1721489E (pt) | 2007-12-21 |
JP2007526520A (ja) | 2007-09-13 |
NO340421B1 (no) | 2017-04-18 |
DE602005002463D1 (de) | 2007-10-25 |
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