WO2004052052A3 - Method and apparatus for processing audio signals from a bitstream - Google Patents

Method and apparatus for processing audio signals from a bitstream Download PDF

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Publication number
WO2004052052A3
WO2004052052A3 PCT/EP2003/013172 EP0313172W WO2004052052A3 WO 2004052052 A3 WO2004052052 A3 WO 2004052052A3 EP 0313172 W EP0313172 W EP 0313172W WO 2004052052 A3 WO2004052052 A3 WO 2004052052A3
Authority
WO
WIPO (PCT)
Prior art keywords
audio
channel
channel configuration
correct
mixdown
Prior art date
Application number
PCT/EP2003/013172
Other languages
French (fr)
Other versions
WO2004052052A2 (en
Inventor
Juergen Schmidt
Jens Spille
Ernst F Schroeder
Johannes Boehm
Original Assignee
Thomson Licensing Sa
Juergen Schmidt
Jens Spille
Ernst F Schroeder
Johannes Boehm
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
Application filed by Thomson Licensing Sa, Juergen Schmidt, Jens Spille, Ernst F Schroeder, Johannes Boehm filed Critical Thomson Licensing Sa
Priority to US10/536,539 priority Critical patent/US8082050B2/en
Priority to BR0316498-5A priority patent/BR0316498A/en
Priority to BRPI0316498-5A priority patent/BRPI0316498B1/en
Priority to JP2004556172A priority patent/JP5031988B2/en
Priority to EP03780037A priority patent/EP1568250B1/en
Priority to AU2003288154A priority patent/AU2003288154B2/en
Priority to CA2508220A priority patent/CA2508220C/en
Publication of WO2004052052A2 publication Critical patent/WO2004052052A2/en
Publication of WO2004052052A3 publication Critical patent/WO2004052052A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S1/00—Two-channel systems
    • 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S1/00—Two-channel systems
    • H04S1/007—Two-channel systems in which the audio signals are in digital form

Abstract

In the MPEG-4 standard ISO/IEC 14496:2001 several audio objects that can be coded with different MPEG-4 format coding types can together form a composed audio system representing a single soundtrack from the several audio substreams. In a receiver the multiple audio objects are decoded separately, but not directly played back to a listener. Instead, transmitted instructions for mixdown are used to prepare a single soundtrack. Mixdown conflicts can occur in case the audio signals to be combined have different channel numbers or configurations. According to the invention an additional audio channel configuration node is used that tags the correct channel configuration information items to the decoded audio data streams to be presented. The invention enables the content provider to set the channel configuration in such a way that the presenter at receiver side can produce a correct channel presentation under all circumstances. An escape code value in the channel configuration data facilitates correct handling of not yet defined channel combinations.
PCT/EP2003/013172 2002-12-02 2003-11-24 Method and apparatus for processing audio signals from a bitstream WO2004052052A2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US10/536,539 US8082050B2 (en) 2002-12-02 2003-11-24 Method and apparatus for processing two or more initially decoded audio signals received or replayed from a bitstream
BR0316498-5A BR0316498A (en) 2002-12-02 2003-11-24 Method and apparatus for processing bitstream audio signals
BRPI0316498-5A BRPI0316498B1 (en) 2002-12-02 2003-11-24 METHOD AND APPARATUS FOR PROCESSING AUDIO SIGNS OF A BIT FLOW
JP2004556172A JP5031988B2 (en) 2002-12-02 2003-11-24 Method and apparatus for processing two or more audio signals
EP03780037A EP1568250B1 (en) 2002-12-02 2003-11-24 Method and apparatus for processing audio signals from a bitstream
AU2003288154A AU2003288154B2 (en) 2002-12-02 2003-11-24 Method and apparatus for processing audio signals from a bitstream
CA2508220A CA2508220C (en) 2002-12-02 2003-11-24 Method and apparatus for processing two or more initially decoded audio signals received or replayed from a bitstream

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP02026779A EP1427252A1 (en) 2002-12-02 2002-12-02 Method and apparatus for processing audio signals from a bitstream
EP02026779.5 2002-12-02

Publications (2)

Publication Number Publication Date
WO2004052052A2 WO2004052052A2 (en) 2004-06-17
WO2004052052A3 true WO2004052052A3 (en) 2004-08-12

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2003/013172 WO2004052052A2 (en) 2002-12-02 2003-11-24 Method and apparatus for processing audio signals from a bitstream

Country Status (9)

Country Link
US (1) US8082050B2 (en)
EP (2) EP1427252A1 (en)
JP (2) JP5031988B2 (en)
KR (1) KR101024749B1 (en)
CN (1) CN100525513C (en)
AU (1) AU2003288154B2 (en)
BR (2) BR0316498A (en)
CA (1) CA2508220C (en)
WO (1) WO2004052052A2 (en)

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Also Published As

Publication number Publication date
EP1427252A1 (en) 2004-06-09
JP5346051B2 (en) 2013-11-20
CA2508220A1 (en) 2004-06-17
AU2003288154A1 (en) 2004-06-23
CN1711800A (en) 2005-12-21
CA2508220C (en) 2013-02-19
EP1568250B1 (en) 2013-01-09
KR101024749B1 (en) 2011-03-24
KR20050085262A (en) 2005-08-29
WO2004052052A2 (en) 2004-06-17
EP1568250A2 (en) 2005-08-31
US8082050B2 (en) 2011-12-20
AU2003288154B2 (en) 2008-08-07
CN100525513C (en) 2009-08-05
JP2011150358A (en) 2011-08-04
JP2006508592A (en) 2006-03-09
BRPI0316498B1 (en) 2018-01-23
BR0316498A (en) 2005-10-11
JP5031988B2 (en) 2012-09-26
US20060174267A1 (en) 2006-08-03

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