SE0400417L - Natural fidelity optimized coding with variable frame length - Google Patents

Natural fidelity optimized coding with variable frame length

Info

Publication number
SE0400417L
SE0400417L SE0400417A SE0400417A SE0400417L SE 0400417 L SE0400417 L SE 0400417L SE 0400417 A SE0400417 A SE 0400417A SE 0400417 A SE0400417 A SE 0400417A SE 0400417 L SE0400417 L SE 0400417L
Authority
SE
Sweden
Prior art keywords
signal
mono
encoding
frame length
variable frame
Prior art date
Application number
SE0400417A
Other languages
Swedish (sv)
Other versions
SE527670C2 (en
SE0400417D0 (en
Inventor
Ingemar Johansson
Anisse Taleb
Stefan Bruhn
Daniel Enstroem
Original Assignee
Ericsson Telefon Ab L M
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
Priority claimed from SE0303501A external-priority patent/SE0303501D0/en
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to SE0400417A priority Critical patent/SE527670C2/en
Publication of SE0400417D0 publication Critical patent/SE0400417D0/en
Priority to AT04820553T priority patent/ATE371924T1/en
Priority to DE602004023240T priority patent/DE602004023240D1/en
Priority to BRPI0419281-8A priority patent/BRPI0419281B1/en
Priority to PCT/SE2004/001867 priority patent/WO2005059899A1/en
Priority to ZA200508980A priority patent/ZA200508980B/en
Priority to US11/011,765 priority patent/US7809579B2/en
Priority to CN200710138487XA priority patent/CN101118747B/en
Priority to AU2004298708A priority patent/AU2004298708B2/en
Priority to CNB2004800186630A priority patent/CN100559465C/en
Priority to PL04820553T priority patent/PL1623411T3/en
Priority to CA2527971A priority patent/CA2527971C/en
Priority to JP2006518596A priority patent/JP4335917B2/en
Priority to MXPA05012230A priority patent/MXPA05012230A/en
Priority to AT07109801T priority patent/ATE443317T1/en
Priority to DE602004008613T priority patent/DE602004008613T2/en
Priority to EP04820553A priority patent/EP1623411B1/en
Priority to BRPI0410856A priority patent/BRPI0410856B8/en
Priority to RU2005134365/09A priority patent/RU2305870C2/en
Priority to CA2690885A priority patent/CA2690885C/en
Priority to EP07109801A priority patent/EP1845519B1/en
Publication of SE0400417L publication Critical patent/SE0400417L/en
Publication of SE527670C2 publication Critical patent/SE527670C2/en
Priority to HK06112026.7A priority patent/HK1091585A1/en
Priority to HK08106066.8A priority patent/HK1115665A1/en
Priority to RU2007121143/09A priority patent/RU2425340C2/en
Priority to JP2007216374A priority patent/JP4589366B2/en

Links

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)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • Computational Linguistics (AREA)
  • Mathematical Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Compression Of Band Width Or Redundancy In Fax (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.
SE0400417A 2003-12-19 2004-02-20 Natural fidelity optimized coding with variable frame length SE527670C2 (en)

Priority Applications (25)

Application Number Priority Date Filing Date Title
SE0400417A SE527670C2 (en) 2003-12-19 2004-02-20 Natural fidelity optimized coding with variable frame length
CA2690885A CA2690885C (en) 2003-12-19 2004-12-15 Fidelity-optimised variable frame length encoding
EP07109801A EP1845519B1 (en) 2003-12-19 2004-12-15 Encoding and decoding of multi-channel audio signals based on a main and side signal representation
CA2527971A CA2527971C (en) 2003-12-19 2004-12-15 Fidelity-optimised variable frame length encoding
AT07109801T ATE443317T1 (en) 2003-12-19 2004-12-15 CODING AND DECODING OF MULTI-CHANNEL SIGNALS BASED ON A MAIN AND SECONDARY SIGNAL REPRESENTATION
BRPI0419281-8A BRPI0419281B1 (en) 2003-12-19 2004-12-15 METHODS OF ENCODING AND DECODING MULTI-CHANNEL SIGNALS AND, CODING AND DECODING DEVICES
PCT/SE2004/001867 WO2005059899A1 (en) 2003-12-19 2004-12-15 Fidelity-optimised variable frame length encoding
ZA200508980A ZA200508980B (en) 2003-12-19 2004-12-15 Fidelity-optimised variable frame length encoding
US11/011,765 US7809579B2 (en) 2003-12-19 2004-12-15 Fidelity-optimized variable frame length encoding
CN200710138487XA CN101118747B (en) 2003-12-19 2004-12-15 Fidelity-optimized pre echoes inhibition encoding
AU2004298708A AU2004298708B2 (en) 2003-12-19 2004-12-15 Fidelity-optimised variable frame length encoding
CNB2004800186630A CN100559465C (en) 2003-12-19 2004-12-15 The variable frame length coding that fidelity is optimized
PL04820553T PL1623411T3 (en) 2003-12-19 2004-12-15 Fidelity-optimised variable frame length encoding
AT04820553T ATE371924T1 (en) 2003-12-19 2004-12-15 FIDELITY-OPTIMIZED CODING WITH VARIABLE FRAME LENGTH
JP2006518596A JP4335917B2 (en) 2003-12-19 2004-12-15 Fidelity optimized variable frame length coding
MXPA05012230A MXPA05012230A (en) 2003-12-19 2004-12-15 Fidelity-optimised variable frame length encoding.
DE602004023240T DE602004023240D1 (en) 2003-12-19 2004-12-15 Coding and decoding of multi-channel sound signals based on a main and sub signal representation
DE602004008613T DE602004008613T2 (en) 2003-12-19 2004-12-15 TREUE OPTIMIZED CODING WITH VARIABLE FRAME LENGTH
EP04820553A EP1623411B1 (en) 2003-12-19 2004-12-15 Fidelity-optimised variable frame length encoding
BRPI0410856A BRPI0410856B8 (en) 2003-12-19 2004-12-15 methods of encoding and decoding multichannel signals, encoder apparatus, and decoder apparatus
RU2005134365/09A RU2305870C2 (en) 2003-12-19 2004-12-15 Alternating frame length encoding optimized for precision
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
RU2007121143/09A RU2425340C2 (en) 2003-12-19 2007-06-05 Accuracy-optimised encoding with supression of lead echo
JP2007216374A JP4589366B2 (en) 2003-12-19 2007-08-22 Fidelity optimized variable frame length coding

Applications Claiming Priority (2)

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

Publications (3)

Publication Number Publication Date
SE0400417D0 SE0400417D0 (en) 2004-02-20
SE0400417L true SE0400417L (en) 2005-06-20
SE527670C2 SE527670C2 (en) 2006-05-09

Family

ID=31996354

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0400417A SE527670C2 (en) 2003-12-19 2004-02-20 Natural fidelity optimized coding with variable frame length

Country Status (15)

Country Link
EP (2) EP1845519B1 (en)
JP (2) JP4335917B2 (en)
CN (2) CN100559465C (en)
AT (2) ATE443317T1 (en)
AU (1) AU2004298708B2 (en)
BR (2) BRPI0410856B8 (en)
CA (2) CA2690885C (en)
DE (2) DE602004008613T2 (en)
HK (2) HK1091585A1 (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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Also Published As

Publication number Publication date
CA2527971C (en) 2011-03-15
RU2425340C2 (en) 2011-07-27
RU2005134365A (en) 2006-05-27
HK1115665A1 (en) 2008-12-05
EP1845519A2 (en) 2007-10-17
RU2007121143A (en) 2008-12-10
EP1623411B1 (en) 2007-08-29
AU2004298708B2 (en) 2008-01-03
PL1623411T3 (en) 2008-01-31
JP4589366B2 (en) 2010-12-01
DE602004008613D1 (en) 2007-10-11
ATE371924T1 (en) 2007-09-15
SE527670C2 (en) 2006-05-09
CN101118747B (en) 2011-02-23
JP2008026914A (en) 2008-02-07
BRPI0419281B1 (en) 2018-08-14
ATE443317T1 (en) 2009-10-15
SE0400417D0 (en) 2004-02-20
CN100559465C (en) 2009-11-11
ZA200508980B (en) 2007-03-28
BRPI0410856A (en) 2006-07-04
CN101118747A (en) 2008-02-06
DE602004023240D1 (en) 2009-10-29
RU2305870C2 (en) 2007-09-10
HK1091585A1 (en) 2007-01-19
CA2527971A1 (en) 2005-06-30
JP2007529021A (en) 2007-10-18
EP1845519B1 (en) 2009-09-16
DE602004008613T2 (en) 2008-06-12
EP1845519A3 (en) 2007-11-07
BRPI0410856B1 (en) 2019-10-01
MXPA05012230A (en) 2006-02-10
AU2004298708A1 (en) 2005-06-30
CA2690885C (en) 2014-01-21
CA2690885A1 (en) 2005-06-30
WO2005059899A1 (en) 2005-06-30
EP1623411A1 (en) 2006-02-08
CN1816847A (en) 2006-08-09
BRPI0410856B8 (en) 2019-10-15
JP4335917B2 (en) 2009-09-30

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