[go: up one dir, main page]

SE0400417D0 - Fidelity-optimized variable frame length encoding - Google Patents

Fidelity-optimized variable frame length encoding

Info

Publication number
SE0400417D0
SE0400417D0 SE0400417A SE0400417A SE0400417D0 SE 0400417 D0 SE0400417 D0 SE 0400417D0 SE 0400417 A SE0400417 A SE 0400417A SE 0400417 A SE0400417 A SE 0400417A SE 0400417 D0 SE0400417 D0 SE 0400417D0
Authority
SE
Sweden
Prior art keywords
signal
mono
encoding
fidelity
frame length
Prior art date
Application number
SE0400417A
Other languages
Swedish (sv)
Other versions
SE527670C2 (en
SE0400417L (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 CA2527971A priority patent/CA2527971C/en
Priority to ZA200508980A priority patent/ZA200508980B/en
Priority to CNB2004800186630A priority patent/CN100559465C/en
Priority to EP04820553A priority patent/EP1623411B1/en
Priority to EP07109801A priority patent/EP1845519B1/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 AT07109801T priority patent/ATE443317T1/en
Priority to DE602004008613T priority patent/DE602004008613T2/en
Priority to RU2005134365/09A priority patent/RU2305870C2/en
Priority to AU2004298708A priority patent/AU2004298708B2/en
Priority to BRPI0410856A priority patent/BRPI0410856B8/en
Priority to HK06112026.7A priority patent/HK1091585B/en
Priority to PL04820553T priority patent/PL1623411T3/en
Priority to CA2690885A priority patent/CA2690885C/en
Priority to AT04820553T priority patent/ATE371924T1/en
Priority to US11/011,765 priority patent/US7809579B2/en
Priority to MXPA05012230A priority patent/MXPA05012230A/en
Priority to JP2006518596A priority patent/JP4335917B2/en
Priority to CN200710138487XA priority patent/CN101118747B/en
Publication of SE0400417L publication Critical patent/SE0400417L/en
Publication of SE527670C2 publication Critical patent/SE527670C2/en
Priority to HK08106066.8A priority patent/HK1115665B/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
JP2006518596A JP4335917B2 (en) 2003-12-19 2004-12-15 Fidelity optimized variable frame length coding
CN200710138487XA CN101118747B (en) 2003-12-19 2004-12-15 Fidelity-optimized pre echoes inhibition encoding
RU2005134365/09A RU2305870C2 (en) 2003-12-19 2004-12-15 Alternating frame length encoding optimized for precision
HK06112026.7A HK1091585B (en) 2003-12-19 2004-12-15 Fidelity-optimised variable frame length encoding
CNB2004800186630A CN100559465C (en) 2003-12-19 2004-12-15 Fidelity optimized variable frame length encoding
EP04820553A EP1623411B1 (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
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
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
AT07109801T ATE443317T1 (en) 2003-12-19 2004-12-15 CODING AND DECODING OF MULTI-CHANNEL SIGNALS BASED ON A MAIN AND SECONDARY SIGNAL REPRESENTATION
DE602004008613T DE602004008613T2 (en) 2003-12-19 2004-12-15 TREUE OPTIMIZED CODING WITH VARIABLE FRAME LENGTH
CA2527971A CA2527971C (en) 2003-12-19 2004-12-15 Fidelity-optimised variable frame length encoding
AU2004298708A AU2004298708B2 (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
ZA200508980A ZA200508980B (en) 2003-12-19 2004-12-15 Fidelity-optimised variable frame length encoding
PL04820553T PL1623411T3 (en) 2003-12-19 2004-12-15 Fidelity-optimised variable frame length encoding
CA2690885A CA2690885C (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
US11/011,765 US7809579B2 (en) 2003-12-19 2004-12-15 Fidelity-optimized variable frame length encoding
MXPA05012230A MXPA05012230A (en) 2003-12-19 2004-12-15 Fidelity-optimised variable frame length encoding.
HK08106066.8A HK1115665B (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 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 true SE0400417D0 (en) 2004-02-20
SE0400417L 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 (14)

Country Link
EP (2) EP1623411B1 (en)
JP (2) JP4335917B2 (en)
CN (2) CN100559465C (en)
AT (2) ATE443317T1 (en)
AU (1) AU2004298708B2 (en)
BR (2) BRPI0419281B1 (en)
CA (2) CA2527971C (en)
DE (2) DE602004008613T2 (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)

Families Citing this family (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4322207B2 (en) * 2002-07-12 2009-08-26 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Audio encoding method
EP1899959A2 (en) 2005-05-26 2008-03-19 LG Electronics Inc. Method of encoding and decoding an audio signal
JP4639966B2 (en) * 2005-05-31 2011-02-23 ヤマハ株式会社 Audio data compression method, audio data compression circuit, and audio data expansion circuit
US8185403B2 (en) 2005-06-30 2012-05-22 Lg Electronics Inc. Method and apparatus for encoding and decoding an audio signal
JP2009500657A (en) 2005-06-30 2009-01-08 エルジー エレクトロニクス インコーポレイティド Apparatus and method for encoding and decoding audio signals
EP1913577B1 (en) 2005-06-30 2021-05-05 Lg Electronics Inc. Apparatus for encoding an audio signal and method thereof
US7830921B2 (en) 2005-07-11 2010-11-09 Lg Electronics Inc. Apparatus and method of encoding and decoding audio signal
JP5111376B2 (en) 2005-08-30 2013-01-09 エルジー エレクトロニクス インコーポレイティド Apparatus and method for encoding and decoding audio signals
KR100880642B1 (en) 2005-08-30 2009-01-30 엘지전자 주식회사 Method and apparatus for decoding audio signal
US7788107B2 (en) 2005-08-30 2010-08-31 Lg Electronics Inc. Method for decoding an audio signal
JP4859925B2 (en) 2005-08-30 2012-01-25 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
US7672379B2 (en) 2005-10-05 2010-03-02 Lg Electronics Inc. Audio signal processing, encoding, and decoding
US7751485B2 (en) 2005-10-05 2010-07-06 Lg Electronics Inc. Signal processing using pilot based coding
KR100857112B1 (en) 2005-10-05 2008-09-05 엘지전자 주식회사 Method and apparatus for signal processing and encoding and decoding method, and apparatus therefor
EP1949367B1 (en) 2005-10-05 2013-07-10 LG Electronics Inc. Method and apparatus for audio signal processing
US7696907B2 (en) 2005-10-05 2010-04-13 Lg Electronics Inc. Method and apparatus for signal processing and encoding and decoding method, and apparatus therefor
US8068569B2 (en) 2005-10-05 2011-11-29 Lg Electronics, Inc. Method and apparatus for signal processing and encoding and decoding
US7646319B2 (en) 2005-10-05 2010-01-12 Lg Electronics Inc. Method and apparatus for signal processing and encoding and decoding method, and apparatus therefor
US7761289B2 (en) 2005-10-24 2010-07-20 Lg Electronics Inc. Removing time delays in signal paths
WO2007080211A1 (en) * 2006-01-09 2007-07-19 Nokia Corporation Decoding of binaural audio signals
WO2007091927A1 (en) * 2006-02-06 2007-08-16 Telefonaktiebolaget Lm Ericsson (Publ) Variable frame offset coding
US7461106B2 (en) 2006-09-12 2008-12-02 Motorola, Inc. Apparatus and method for low complexity combinatorial coding of signals
BRPI0806346B1 (en) * 2007-01-10 2020-09-29 Koninklijke Philips N.V. AUDIO DECODER, METHOD FOR DECODING AUDIO SIGNALS, RECEIVER FOR RECEIVING AUDIO SIGNALS, COMMUNICATION SYSTEM FOR COMMUNICATING AUDIO SIGNALS, METHODS FOR RECEIVING AUDIO SIGNALS AND FOR TRANSMITTING AND RECEIVING AUDIO SIGNALS, AUDIO SIGNALS
US8576096B2 (en) 2007-10-11 2013-11-05 Motorola Mobility Llc Apparatus and method for low complexity combinatorial coding of signals
US8209190B2 (en) 2007-10-25 2012-06-26 Motorola Mobility, Inc. Method and apparatus for generating an enhancement layer within an audio coding system
US7889103B2 (en) 2008-03-13 2011-02-15 Motorola Mobility, Inc. Method and apparatus for low complexity combinatorial coding of signals
US8639519B2 (en) 2008-04-09 2014-01-28 Motorola Mobility Llc Method and apparatus for selective signal coding based on core encoder performance
EP2124486A1 (en) * 2008-05-13 2009-11-25 Clemens Par Angle-dependent operating device or method for generating a pseudo-stereophonic audio signal
MX2010012580A (en) 2008-05-23 2010-12-20 Koninkl Philips Electronics Nv PARAMETER STEREO ASCENDANT MIXING DEVICE, PARAMETRIC STEREO DECODER, PARAMETER STEREO DESCENDING MIXING DEVICE, PARAMETRIC STEREO ENCODER.
JPWO2010016270A1 (en) * 2008-08-08 2012-01-19 パナソニック株式会社 Quantization apparatus, encoding apparatus, quantization method, and encoding method
RU2481650C2 (en) * 2008-09-17 2013-05-10 Франс Телеком Attenuation of anticipated echo signals in digital sound signal
JP5309944B2 (en) 2008-12-11 2013-10-09 富士通株式会社 Audio decoding apparatus, method, and program
US8219408B2 (en) 2008-12-29 2012-07-10 Motorola Mobility, Inc. Audio signal decoder and method for producing a scaled reconstructed audio signal
US8175888B2 (en) 2008-12-29 2012-05-08 Motorola Mobility, Inc. Enhanced layered gain factor balancing within a multiple-channel audio coding system
US8200496B2 (en) 2008-12-29 2012-06-12 Motorola Mobility, Inc. Audio signal decoder and method for producing a scaled reconstructed audio signal
US8140342B2 (en) 2008-12-29 2012-03-20 Motorola Mobility, Inc. Selective scaling mask computation based on peak detection
JP5793675B2 (en) 2009-07-31 2015-10-14 パナソニックＩｐマネジメント株式会社 Encoding device and decoding device
CN102576539B (en) * 2009-10-20 2016-08-03 松下电器（美国）知识产权公司 Code device, communication terminal, base station apparatus and coded method
EP2346028A1 (en) * 2009-12-17 2011-07-20 Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V. An apparatus and a method for converting a first parametric spatial audio signal into a second parametric spatial audio signal
EP2517201B1 (en) * 2009-12-23 2015-11-04 Nokia Technologies Oy Sparse audio processing
US8442837B2 (en) 2009-12-31 2013-05-14 Motorola Mobility Llc Embedded speech and audio coding using a switchable model core
US8423355B2 (en) 2010-03-05 2013-04-16 Motorola Mobility Llc Encoder for audio signal including generic audio and speech frames
US8428936B2 (en) 2010-03-05 2013-04-23 Motorola Mobility Llc Decoder for audio signal including generic audio and speech frames
EP2544465A1 (en) * 2011-07-05 2013-01-09 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method and apparatus for decomposing a stereo recording using frequency-domain processing employing a spectral weights generator
US9129600B2 (en) 2012-09-26 2015-09-08 Google Technology Holdings LLC Method and apparatus for encoding an audio signal
PL2922053T3 (en) * 2012-11-15 2019-11-29 Ntt Docomo Inc AUDIO ENCODING DEVICE, AUDIO ENCODING METHOD, AUDIO ENCODING SOFTWARE, AUDIO ENCODING DEVICE, AUDIO ENCODING METHOD, AND AUDIO DECODING SOFTWARE
US10060955B2 (en) * 2014-06-25 2018-08-28 Advanced Micro Devices, Inc. Calibrating power supply voltages using reference measurements from code loop executions
US12125492B2 (en) 2015-09-25 2024-10-22 Voiceage Coproration Method and system for decoding left and right channels of a stereo sound signal
RU2728535C2 (en) 2015-09-25 2020-07-30 Войсэйдж Корпорейшн Method and system using difference of long-term correlations between left and right channels for downmixing in time area of stereophonic audio signal to primary and secondary channels
CN107742521B (en) 2016-08-10 2021-08-13 华为技术有限公司 Coding method and encoder for multi-channel signal
CN109215668B (en) * 2017-06-30 2021-01-05 华为技术有限公司 Method and device for encoding inter-channel phase difference parameters
CN110728986B (en) 2018-06-29 2022-10-18 华为技术有限公司 Coding method, decoding method, coding device and decoding device for stereo signal
CN112233682B (en) * 2019-06-29 2024-07-16 华为技术有限公司 A stereo encoding method, a stereo decoding method and a device

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5434948A (en) * 1989-06-15 1995-07-18 British Telecommunications Public Limited Company Polyphonic coding
NL9100173A (en) * 1991-02-01 1992-09-01 Philips Nv SUBBAND CODING DEVICE, AND A TRANSMITTER EQUIPPED WITH THE CODING DEVICE.
US5285498A (en) * 1992-03-02 1994-02-08 At&T Bell Laboratories Method and apparatus for coding audio signals based on perceptual model
US5694332A (en) * 1994-12-13 1997-12-02 Lsi Logic Corporation MPEG audio decoding system with subframe input buffering
US5956674A (en) * 1995-12-01 1999-09-21 Digital Theater Systems, Inc. Multi-channel predictive subband audio coder using psychoacoustic adaptive bit allocation in frequency, time and over the multiple channels
US5812971A (en) * 1996-03-22 1998-09-22 Lucent Technologies Inc. Enhanced joint stereo coding method using temporal envelope shaping
US5796842A (en) * 1996-06-07 1998-08-18 That Corporation BTSC encoder
RU2256293C2 (en) * 1997-06-10 2005-07-10 Коудинг Технолоджиз Аб Improving initial coding using duplicating band
US6463410B1 (en) * 1998-10-13 2002-10-08 Victor Company Of Japan, Ltd. Audio signal processing apparatus
US6226616B1 (en) * 1999-06-21 2001-05-01 Digital Theater Systems, Inc. Sound quality of established low bit-rate audio coding systems without loss of decoder compatibility
US6782360B1 (en) * 1999-09-22 2004-08-24 Mindspeed Technologies, Inc. Gain quantization for a CELP speech coder
DE19959156C2 (en) * 1999-12-08 2002-01-31 Fraunhofer Ges Forschung Method and device for processing a stereo audio signal to be encoded
JP3335605B2 (en) * 2000-03-13 2002-10-21 日本電信電話株式会社 Stereo signal encoding method
RU2161868C1 (en) * 2000-05-12 2001-01-10 Федеральное государственное унитарное предприятие Научно-исследовательский институт радио Государственного комитета РФ по связи и информатизации Method for broadcast relaying of stereophonic signal
DE60209888T2 (en) * 2001-05-08 2006-11-23 Koninklijke Philips Electronics N.V. CODING AN AUDIO SIGNAL
JP2003084790A (en) * 2001-09-17 2003-03-19 Matsushita Electric Ind Co Ltd Dialogue component emphasis device
JP2003330497A (en) * 2002-05-15 2003-11-19 Matsushita Electric Ind Co Ltd Audio signal encoding method and apparatus, encoding and decoding system, program for executing encoding, and recording medium on which the program is recorded
CN1219415C (en) * 2002-07-23 2005-09-14 华南理工大学 A signal processing method for earphone retransmission with 5.1 channel surround sound

Also Published As

Publication number Publication date
CA2690885A1 (en) 2005-06-30
CN100559465C (en) 2009-11-11
EP1623411A1 (en) 2006-02-08
ATE443317T1 (en) 2009-10-15
EP1623411B1 (en) 2007-08-29
CN101118747B (en) 2011-02-23
RU2305870C2 (en) 2007-09-10
HK1115665A1 (en) 2008-12-05
EP1845519B1 (en) 2009-09-16
MXPA05012230A (en) 2006-02-10
DE602004008613T2 (en) 2008-06-12
JP2008026914A (en) 2008-02-07
ZA200508980B (en) 2007-03-28
CA2690885C (en) 2014-01-21
SE527670C2 (en) 2006-05-09
AU2004298708B2 (en) 2008-01-03
CA2527971C (en) 2011-03-15
RU2005134365A (en) 2006-05-27
HK1091585A1 (en) 2007-01-19
SE0400417L (en) 2005-06-20
WO2005059899A1 (en) 2005-06-30
RU2007121143A (en) 2008-12-10
DE602004023240D1 (en) 2009-10-29
CN1816847A (en) 2006-08-09
JP4589366B2 (en) 2010-12-01
BRPI0410856B8 (en) 2019-10-15
JP4335917B2 (en) 2009-09-30
CA2527971A1 (en) 2005-06-30
RU2425340C2 (en) 2011-07-27
JP2007529021A (en) 2007-10-18
CN101118747A (en) 2008-02-06
AU2004298708A1 (en) 2005-06-30
BRPI0410856B1 (en) 2019-10-01
PL1623411T3 (en) 2008-01-31
BRPI0419281B1 (en) 2018-08-14
BRPI0410856A (en) 2006-07-04
EP1845519A2 (en) 2007-10-17
ATE371924T1 (en) 2007-09-15
DE602004008613D1 (en) 2007-10-11
EP1845519A3 (en) 2007-11-07

Similar Documents

Publication Publication Date Title
SE0400417D0 (en) Fidelity-optimized variable frame length encoding
CA2197128A1 (en) Enhanced Joint Stereo Coding Method Using Temporal Envelope Shaping
ATE424606T1 (en) INDIVIDUAL CHANNEL TEMPORARY ENVELOPE SHAPING FOR BINAURAL CUE CODING PROCEDURES AND THE LIKE
DE60120734D1 (en) DEVICE FOR EXPANDING THE BANDWIDTH OF AN AUDIO SIGNAL
DE69521164D1 (en) System for coding and decoding signals
ATE433182T1 (en) AUDIO CODING AND AUDIO DECODING
DE60127566D1 (en) MULTICHANNEL SIGNAL CODING AND DECODING
WO1998018230A3 (en) Audio decoder with an adaptive frequency domain downmixer
FR2849727B1 (en) METHOD FOR AUDIO CODING AND DECODING AT VARIABLE FLOW
DK0910928T3 (en) Coding and decoding of audio signals using intensity stereo and prediction
DK1016320T3 (en) Method and apparatus for encoding and decoding multiple audio channels at low bit rates
BR0305555A (en) Method and encoder for encoding an audio signal, apparatus for providing an audio signal, encoded audio signal, storage medium, and method and decoder for decoding an encoded audio signal
ATE320681T1 (en) TRANSMISSION SYSTEM
DE69734543D1 (en) WITH 2-CHANNEL AND 1-CHANNEL TRANSMISSION COMPATIBLE N-CHANNEL TRANSMISSION
DE602005017660D1 (en) AUDIO CODING DEVICE AND AUDIO CODING METHOD
DK1016319T3 (en) Method and apparatus for encoding a time-discrete stereo signal
EP1422944B8 (en) Picture decoding method and apparatus thereof
ES2180919T3 (en) METHOD AND PROVISION FOR CODING A VIDEO SIGNAL.
DE60200632D1 (en) Method for voice activity detection in a signal, and voice encoder with device for carrying out the method
SE9300290D0 (en) METHOD AND APPARATUS FOR ENCODING / DECODING OF BACKGROUND SOUNDS
FR2791167B1 (en) AUDIO ENCODING, DECODING AND TRANSCODING METHODS
TR199701134T1 (en) 7-channel transmission compatible with 5-channel transmission and 2-channel transmission.