SE527670C2 - Faithful safety Optimized coding variable frame length - Google Patents

Faithful safety Optimized coding variable frame length

Info

Publication number
SE527670C2
SE527670C2 SE0400417A SE0400417A SE527670C2 SE 527670 C2 SE527670 C2 SE 527670C2 SE 0400417 A SE0400417 A SE 0400417A SE 0400417 A SE0400417 A SE 0400417A SE 527670 C2 SE527670 C2 SE 527670C2
Authority
SE
Sweden
Prior art keywords
side
signal
mono
encoding
method
Prior art date
Application number
SE0400417A
Other languages
Swedish (sv)
Other versions
SE0400417L (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 to SE0303501A priority Critical patent/SE0303501D0/en
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to SE0400417A priority patent/SE527670C2/en
Publication of SE0400417D0 publication Critical patent/SE0400417D0/en
Priority claimed from US11/011,765 external-priority patent/US7809579B2/en
Publication of SE0400417L publication Critical patent/SE0400417L/en
Publication of SE527670C2 publication Critical patent/SE527670C2/en

Links

Classifications

    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech 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
    • G10L19/008Multichannel audio signal coding or decoding, i.e. using interchannel correlation to reduce redundancies, e.g. joint-stereo, intensity-coding, matrixing

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 Faithful safety Optimized coding variable frame length SE527670C2 (en)

Priority Applications (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 Faithful safety Optimized coding variable frame length

Applications Claiming Priority (24)

Application Number Priority Date Filing Date Title
SE0400417A SE527670C2 (en) 2003-12-19 2004-02-20 Faithful safety Optimized coding variable frame length
CA2690885A CA2690885C (en) 2003-12-19 2004-12-15 Fidelity-optimised variable frame length encoding
DE200460008613 DE602004008613T2 (en) 2003-12-19 2004-12-15 Loyalty Optimized encoding variable frame length
AU2004298708A AU2004298708B2 (en) 2003-12-19 2004-12-15 Fidelity-optimised variable frame length encoding
RU2005134365/09A RU2305870C2 (en) 2003-12-19 2004-12-15 Alternating frame length encoding optimized for precision
AT04820553T AT371924T (en) 2003-12-19 2004-12-15 Loyalty Optimized encoding variable frame length
BRPI0410856 BRPI0410856A (en) 2003-12-19 2004-12-15 methods of encoding and decoding polyphenolic signals, encoder apparatus, and audio system
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
CA 2527971 CA2527971C (en) 2003-12-19 2004-12-15 Fidelity-optimised variable frame length encoding
DE200460023240 DE602004023240D1 (en) 2003-12-19 2004-12-15 Encoding and decoding multi-channel audio based on a main and secondary signal representation
MXPA05012230A MXPA05012230A (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
AT07109801T AT443317T (en) 2003-12-19 2004-12-15 Encoding and decoding of multi-channel audio based on a full and part-signal representation
PCT/SE2004/001867 WO2005059899A1 (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
EP20040820553 EP1623411B1 (en) 2003-12-19 2004-12-15 Fidelity-optimised variable frame length encoding
CN 200710138487 CN101118747B (en) 2003-12-19 2004-12-15 Fidelity-optimized pre echoes inhibition encoding
BRPI0419281-8A BRPI0419281B1 (en) 2003-12-19 2004-12-15 Methods of encoding and decoding multi-channel signals, and encoder and decoder devices
CN 200480018663 CN100559465C (en) 2003-12-19 2004-12-15 Fidelity-optimised variable frame length encoding
JP2006518596A JP4335917B2 (en) 2003-12-19 2004-12-15 Fidelity optimization variable frame length coding
HK06112026A HK1091585A1 (en) 2003-12-19 2006-11-01 Fidelity-optimised variable frame length encoding
HK08106066.8A HK1115665A1 (en) 2003-12-19 2006-11-01 Fidelity-optimised pre-echo suppressing 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 optimization variable frame length coding

Publications (3)

Publication Number Publication Date
SE0400417D0 SE0400417D0 (en) 2004-02-20
SE0400417L SE0400417L (en) 2005-06-20
SE527670C2 true 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 Faithful safety Optimized coding variable frame length

Country Status (14)

Country Link
EP (2) EP1845519B1 (en)
JP (2) JP4335917B2 (en)
CN (2) CN100559465C (en)
AT (2) AT443317T (en)
AU (1) AU2004298708B2 (en)
BR (2) BRPI0419281B1 (en)
CA (2) CA2690885C (en)
DE (2) DE602004008613T2 (en)
HK (2) HK1091585A1 (en)
MX (1) MXPA05012230A (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
EP1845519B1 (en) 2009-09-16
CN101118747B (en) 2011-02-23
DE602004008613T2 (en) 2008-06-12
HK1115665A1 (en) 2011-11-25
JP4335917B2 (en) 2009-09-30
JP4589366B2 (en) 2010-12-01
WO2005059899A1 (en) 2005-06-30
AT371924T (en) 2007-09-15
JP2007529021A (en) 2007-10-18
BRPI0419281B1 (en) 2018-08-14
RU2005134365A (en) 2006-05-27
DE602004023240D1 (en) 2009-10-29
AU2004298708B2 (en) 2008-01-03
JP2008026914A (en) 2008-02-07
AT443317T (en) 2009-10-15
EP1845519A2 (en) 2007-10-17
BRPI0410856A (en) 2006-07-04
DE602004008613D1 (en) 2007-10-11
EP1623411B1 (en) 2007-08-29
CA2527971C (en) 2011-03-15
ZA200508980B (en) 2007-03-28
CN100559465C (en) 2009-11-11
MXPA05012230A (en) 2006-02-10
EP1845519A3 (en) 2007-11-07
CA2690885C (en) 2014-01-21
CN101118747A (en) 2008-02-06
RU2425340C2 (en) 2011-07-27
AU2004298708A1 (en) 2005-06-30
HK1091585A1 (en) 2010-08-06
CN1816847A (en) 2006-08-09
RU2305870C2 (en) 2007-09-10
RU2007121143A (en) 2008-12-10
CA2690885A1 (en) 2005-06-30
SE0400417L (en) 2005-06-20
CA2527971A1 (en) 2005-06-30
SE0400417D0 (en) 2004-02-20
EP1623411A1 (en) 2006-02-08

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