NO944285L - Method of reducing data by transmitting and / or storing digital signals from several interdependent channels - Google Patents

Method of reducing data by transmitting and / or storing digital signals from several interdependent channels

Info

Publication number
NO944285L
NO944285L NO944285A NO944285A NO944285L NO 944285 L NO944285 L NO 944285L NO 944285 A NO944285 A NO 944285A NO 944285 A NO944285 A NO 944285A NO 944285 L NO944285 L NO 944285L
Authority
NO
Norway
Prior art keywords
channels
coding
signals
data rate
joint coding
Prior art date
Application number
NO944285A
Other languages
Norwegian (no)
Other versions
NO944285D0 (en
NO307280B1 (en
Inventor
Jurgen Herre
Dieter Seitzer
Karl-Heinz Brandenburg
Ernst Eberlein
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
Application filed by Fraunhofer Ges Forschung filed Critical Fraunhofer Ges Forschung
Publication of NO944285D0 publication Critical patent/NO944285D0/en
Publication of NO944285L publication Critical patent/NO944285L/en
Publication of NO307280B1 publication Critical patent/NO307280B1/en

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission
    • H04B1/665—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission using psychoacoustic properties of the ear, e.g. masking effect

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Dc Digital Transmission (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Optical Communication System (AREA)

Abstract

The description relates to a process for reducing data in the transmission and/or storage of digital signals from several interdependent channels. As the signals from the channels are not mutually independent, it is possible further to reduce the quantity of data during transmission. In prior art processes for coding signals from two stereo channels, it is possible with a poor signal composition to cause interference through the coding which is not covered by the signal actually present in the channel and detract from listening enjoyment. In the process of the invention, by the use of the spectral values of corresponding blocks, the necessary data rate for separate coding of the two channels and for joint coding is balanced. The channels are jointly coded as long as the data rate for joint coding does not exceed the data rate for the separated coding of the channels concerned by a predeterminable value. In this case the spectral values of the corresponding blocks are similar so that joint coding is preferred. With very dissimilar signals, balancing results in separate signal transmission. The joint coding of several channels is temporarily suspended in order to be certain of preventing interference.
NO944285A 1992-05-25 1994-11-10 Method of reducing data by transmitting and / or storing digital signals from several interdependent channels NO307280B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4217276A DE4217276C1 (en) 1992-05-25 1992-05-25
PCT/DE1993/000448 WO1993025015A1 (en) 1992-05-25 1993-05-18 Process for reducing data in the transmission and/or storage of digital signals from several interdependent channels

Publications (3)

Publication Number Publication Date
NO944285D0 NO944285D0 (en) 1994-11-10
NO944285L true NO944285L (en) 1994-11-10
NO307280B1 NO307280B1 (en) 2000-03-06

Family

ID=6459691

Family Applications (1)

Application Number Title Priority Date Filing Date
NO944285A NO307280B1 (en) 1992-05-25 1994-11-10 Method of reducing data by transmitting and / or storing digital signals from several interdependent channels

Country Status (11)

Country Link
EP (1) EP0642719B1 (en)
JP (1) JP3552232B2 (en)
KR (1) KR100240439B1 (en)
AT (1) ATE142829T1 (en)
AU (1) AU683614B2 (en)
CA (1) CA2118402C (en)
DE (2) DE4217276C1 (en)
NO (1) NO307280B1 (en)
RU (1) RU2119259C1 (en)
UA (1) UA34457C2 (en)
WO (1) WO1993025015A1 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4331376C1 (en) * 1993-09-15 1994-11-10 Fraunhofer Ges Forschung Method for determining the type of encoding to selected for the encoding of at least two signals
JP3404837B2 (en) * 1993-12-07 2003-05-12 ソニー株式会社 Multi-layer coding device
DE4437287C2 (en) * 1994-10-18 1996-10-24 Fraunhofer Ges Forschung Methods for measuring the preservation of stereophonic audio signals and method for recognizing jointly coded stereophonic audio signals
JP3279228B2 (en) * 1997-08-09 2002-04-30 日本電気株式会社 Encoded speech decoding device
DE19742655C2 (en) * 1997-09-26 1999-08-05 Fraunhofer Ges Forschung Method and device for coding a discrete-time stereo signal
DE60043585D1 (en) 2000-11-08 2010-02-04 Sony Deutschland Gmbh Noise reduction of a stereo receiver
JP4618873B2 (en) * 2000-11-24 2011-01-26 パナソニック株式会社 Audio signal encoding method, audio signal encoding device, music distribution method, and music distribution system
US7983922B2 (en) 2005-04-15 2011-07-19 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Apparatus and method for generating multi-channel synthesizer control signal and apparatus and method for multi-channel synthesizing
JP4988716B2 (en) 2005-05-26 2012-08-01 エルジー エレクトロニクス インコーポレイティド Audio signal decoding method and apparatus
US8917874B2 (en) 2005-05-26 2014-12-23 Lg Electronics Inc. Method and apparatus for decoding an audio signal
KR100857106B1 (en) 2005-09-14 2008-09-08 엘지전자 주식회사 Method and apparatus for decoding an audio signal
JP4806031B2 (en) 2006-01-19 2011-11-02 エルジー エレクトロニクス インコーポレイティド Media signal processing method and apparatus
JP5147727B2 (en) 2006-01-19 2013-02-20 エルジー エレクトロニクス インコーポレイティド Signal decoding method and apparatus
KR100983286B1 (en) 2006-02-07 2010-09-24 엘지전자 주식회사 Apparatus and method for encoding/decoding signal
KR100904439B1 (en) 2006-02-23 2009-06-26 엘지전자 주식회사 Method and apparatus for processing an audio signal
CA2646961C (en) 2006-03-28 2013-09-03 Sascha Disch Enhanced method for signal shaping in multi-channel audio reconstruction
TWI483619B (en) 2006-03-30 2015-05-01 Lg Electronics Inc Apparatus for encoding/decoding media signal and method thereof
US20080235006A1 (en) 2006-08-18 2008-09-25 Lg Electronics, Inc. Method and Apparatus for Decoding an Audio Signal

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3629434C2 (en) * 1986-08-29 1994-07-28 Karlheinz Dipl Ing Brandenburg Digital coding method
DE3805946A1 (en) * 1988-02-25 1989-09-07 Fraunhofer Ges Forschung DEVICE FOR DETERMINING CHARACTERISTIC PARAMETERS FROM THE INPUT AND OUTPUT SIGNALS OF A SYSTEM FOR AUDIO SIGNAL PROCESSING
NL9000338A (en) * 1989-06-02 1991-01-02 Koninkl Philips Electronics Nv DIGITAL TRANSMISSION SYSTEM, TRANSMITTER AND RECEIVER FOR USE IN THE TRANSMISSION SYSTEM AND RECORD CARRIED OUT WITH THE TRANSMITTER IN THE FORM OF A RECORDING DEVICE.
DE4136825C1 (en) * 1991-11-08 1993-03-18 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung Ev, 8000 Muenchen, De

Also Published As

Publication number Publication date
CA2118402A1 (en) 1993-12-09
WO1993025015A1 (en) 1993-12-09
JPH08501666A (en) 1996-02-20
KR950701786A (en) 1995-04-28
EP0642719B1 (en) 1996-09-11
NO944285D0 (en) 1994-11-10
KR100240439B1 (en) 2000-01-15
UA34457C2 (en) 2001-03-15
CA2118402C (en) 2007-01-16
DE59303771D1 (en) 1996-10-17
RU2119259C1 (en) 1998-09-20
JP3552232B2 (en) 2004-08-11
DE4217276C1 (en) 1993-04-08
NO307280B1 (en) 2000-03-06
EP0642719A1 (en) 1995-03-15
ATE142829T1 (en) 1996-09-15
AU683614B2 (en) 1997-11-20
AU4059393A (en) 1993-12-30

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Legal Events

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