NO20180990A1 - Kompatibel flerkanal-koding/dekoding. - Google Patents

Kompatibel flerkanal-koding/dekoding.

Info

Publication number
NO20180990A1
NO20180990A1 NO20180990A NO20180990A NO20180990A1 NO 20180990 A1 NO20180990 A1 NO 20180990A1 NO 20180990 A NO20180990 A NO 20180990A NO 20180990 A NO20180990 A NO 20180990A NO 20180990 A1 NO20180990 A1 NO 20180990A1
Authority
NO
Norway
Prior art keywords
channel
channels
downmix
side information
original
Prior art date
Application number
NO20180990A
Other languages
English (en)
Other versions
NO344760B1 (no
Inventor
Jürgen Herre
Johannes Hilpert
Stefan Geyerserger
Andreas Holzer
Claus Spenger
Original Assignee
Fraunhofer Ges Forschung
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34394093&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=NO20180990(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Publication of NO20180990A1 publication Critical patent/NO20180990A1/no
Application filed by Fraunhofer Ges Forschung filed Critical Fraunhofer Ges Forschung
Publication of NO344760B1 publication Critical patent/NO344760B1/no

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/02—Systems employing more than two channels, e.g. quadraphonic of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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 OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/032—Quantisation or dequantisation of spectral components
    • 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 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/008—Systems employing more than two channels, e.g. quadraphonic in which the audio signals are in digital form, i.e. employing more than two discrete digital channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
    • H04S2400/03—Aspects of down-mixing multi-channel audio to configurations with lower numbers of playback channels, e.g. 7.1 -> 5.1
    • 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

Abstract

Ved behandling av et flerkanals audiosignal med minst tre opprinnelige kanaler, blir en første nedblandekanal og en andre nedblandekanal tilveiebrakt (12) som avledes fra de opprinnelige kanaler. For en valgt, opprinnelig kanal av de opprinnelige kanaler, blir kanalsideinformasjonen beregnet (14) slik at en nedblandekanal eller en kombinert nedblandekanal med første og andre nedblandekanaler under vekting ved å bruke kanalsideinnformasjonen, fører til en approksimering av den valgte, opprinnelige kanal. Kanalsideinformasjonen og de første og andre nedblandekanaler danner utgangsdata (20) for overføring til en dekoder som for en lavnivådekoder bare dekoder de første og andre nedblandekanaler, eller i tilfellet av en høynivådekoder, tilveiebringer et fullstendig flerkanals audiosignal basert på nedblandekanalene og kanalsideinformasjonen. Siden kanalsideinformasjonen bare opptar et lite antall biter og siden dekoderen ikke bruker dematrising, oppnås en effektiv og høykvalitativ flerekanals forlengelse for stereospillere og forbedrede flerkanalsspillere.
NO20180990A 2003-10-02 2018-07-13 Kompatibel flerkanal-koding/dekoding. NO344760B1 (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/679,085 US7447317B2 (en) 2003-10-02 2003-10-02 Compatible multi-channel coding/decoding by weighting the downmix channel
PCT/EP2004/010948 WO2005036925A2 (en) 2003-10-02 2004-09-30 Compatible multi-channel coding/decoding

Publications (2)

Publication Number Publication Date
NO20180990A1 true NO20180990A1 (no) 2006-06-30
NO344760B1 NO344760B1 (no) 2020-04-14

Family

ID=34394093

Family Applications (8)

Application Number Title Priority Date Filing Date
NO20191058A NO347074B1 (no) 2003-10-02 2004-09-30 Kompatibel flerkanalkoding/dekoding
NO20061898A NO342804B1 (no) 2003-10-02 2006-04-28 Kompatibel flerkanal-koding/dekoding
NO20180980A NO344483B1 (no) 2003-10-02 2018-07-12 Kompatibel flerkanal-koding/dekoding
NO20180978A NO344635B1 (no) 2003-10-02 2018-07-12 Kompatibel flerkanal-koding/dekoding
NO20180993A NO344093B1 (no) 2003-10-02 2018-07-13 Kompatibel flerkanal-koding/dekoding.
NO20180990A NO344760B1 (no) 2003-10-02 2018-07-13 Kompatibel flerkanal-koding/dekoding.
NO20180991A NO344091B1 (no) 2003-10-02 2018-07-13 Kompatibel flerkanal-koding/dekoding.
NO20200106A NO345265B1 (no) 2003-10-02 2020-01-28 Kompatibel flerkanal-koding/dekoding

Family Applications Before (5)

Application Number Title Priority Date Filing Date
NO20191058A NO347074B1 (no) 2003-10-02 2004-09-30 Kompatibel flerkanalkoding/dekoding
NO20061898A NO342804B1 (no) 2003-10-02 2006-04-28 Kompatibel flerkanal-koding/dekoding
NO20180980A NO344483B1 (no) 2003-10-02 2018-07-12 Kompatibel flerkanal-koding/dekoding
NO20180978A NO344635B1 (no) 2003-10-02 2018-07-12 Kompatibel flerkanal-koding/dekoding
NO20180993A NO344093B1 (no) 2003-10-02 2018-07-13 Kompatibel flerkanal-koding/dekoding.

Family Applications After (2)

Application Number Title Priority Date Filing Date
NO20180991A NO344091B1 (no) 2003-10-02 2018-07-13 Kompatibel flerkanal-koding/dekoding.
NO20200106A NO345265B1 (no) 2003-10-02 2020-01-28 Kompatibel flerkanal-koding/dekoding

Country Status (18)

Country Link
US (11) US7447317B2 (no)
EP (1) EP1668959B1 (no)
JP (1) JP4547380B2 (no)
KR (1) KR100737302B1 (no)
CN (1) CN1864436B (no)
AT (1) ATE350879T1 (no)
BR (5) BR122018069726B1 (no)
CA (1) CA2540851C (no)
DE (1) DE602004004168T2 (no)
DK (1) DK1668959T3 (no)
ES (1) ES2278348T3 (no)
HK (1) HK1092001A1 (no)
IL (1) IL174286A (no)
MX (1) MXPA06003627A (no)
NO (8) NO347074B1 (no)
PT (1) PT1668959E (no)
RU (1) RU2327304C2 (no)
WO (1) WO2005036925A2 (no)

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