HK1091585A1 - Fidelity-optimised variable frame length encoding - Google Patents

Fidelity-optimised variable frame length encoding

Info

Publication number
HK1091585A1
HK1091585A1 HK06112026.7A HK06112026A HK1091585A1 HK 1091585 A1 HK1091585 A1 HK 1091585A1 HK 06112026 A HK06112026 A HK 06112026A HK 1091585 A1 HK1091585 A1 HK 1091585A1
Authority
HK
Hong Kong
Prior art keywords
signal
mono
encoding
fidelity
frame length
Prior art date
Application number
HK06112026.7A
Inventor
Stefan Bruhn
Ingemar Johansson
Anisse Taleb
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 HK08106066.8A priority Critical patent/HK1115665A1/en
Publication of HK1091585A1 publication Critical patent/HK1091585A1/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)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (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.
HK06112026.7A 2003-12-19 2006-11-01 Fidelity-optimised variable frame length encoding HK1091585A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
HK08106066.8A HK1115665A1 (en) 2003-12-19 2006-11-01 Fidelity-optimised pre-echo suppressing encoding

Applications Claiming Priority (3)

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
PCT/SE2004/001867 WO2005059899A1 (en) 2003-12-19 2004-12-15 Fidelity-optimised variable frame length encoding

Publications (1)

Publication Number Publication Date
HK1091585A1 true HK1091585A1 (en) 2007-01-19

Family

ID=31996354

Family Applications (2)

Application Number Title Priority Date Filing Date
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

Family Applications Before (1)

Application Number Title Priority Date Filing Date
HK08106066.8A HK1115665A1 (en) 2003-12-19 2006-11-01 Fidelity-optimised pre-echo suppressing encoding

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) BRPI0419281B1 (en)
CA (2) CA2527971C (en)
DE (2) DE602004023240D1 (en)
HK (2) HK1115665A1 (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 (51)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60317203T2 (en) * 2002-07-12 2008-08-07 Koninklijke Philips Electronics N.V. AUDIO CODING
WO2006126859A2 (en) * 2005-05-26 2006-11-30 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
WO2007004833A2 (en) 2005-06-30 2007-01-11 Lg Electronics Inc. Method and apparatus for encoding and decoding an audio signal
JP5227794B2 (en) 2005-06-30 2013-07-03 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
US8073702B2 (en) 2005-06-30 2011-12-06 Lg Electronics Inc. Apparatus for encoding and decoding audio signal and method thereof
US8121836B2 (en) 2005-07-11 2012-02-21 Lg Electronics Inc. Apparatus and method of processing an audio signal
US8577483B2 (en) 2005-08-30 2013-11-05 Lg Electronics, Inc. Method for decoding an audio signal
JP4568363B2 (en) 2005-08-30 2010-10-27 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
WO2007027051A1 (en) 2005-08-30 2007-03-08 Lg Electronics Inc. Apparatus for encoding and decoding audio signal and method thereof
US7788107B2 (en) 2005-08-30 2010-08-31 Lg Electronics Inc. Method for decoding an audio signal
US7672379B2 (en) 2005-10-05 2010-03-02 Lg Electronics Inc. Audio signal processing, encoding, and decoding
KR100857111B1 (en) 2005-10-05 2008-09-08 엘지전자 주식회사 Method and apparatus for signal processing and encoding and decoding method, and apparatus therefor
US7751485B2 (en) 2005-10-05 2010-07-06 Lg Electronics Inc. Signal processing using pilot based coding
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
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
WO2007040364A1 (en) 2005-10-05 2007-04-12 Lg Electronics Inc. Method and apparatus for signal processing and encoding and decoding method, and apparatus therefor
US7653533B2 (en) 2005-10-24 2010-01-26 Lg Electronics Inc. Removing time delays in signal paths
WO2007080211A1 (en) * 2006-01-09 2007-07-19 Nokia Corporation Decoding of binaural audio signals
CN101366082B (en) 2006-02-06 2012-10-03 艾利森电话股份有限公司 Variable frame shifting code method, codec and wireless communication device
US7461106B2 (en) 2006-09-12 2008-12-02 Motorola, Inc. Apparatus and method for low complexity combinatorial coding of 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
BR122020009727B1 (en) 2008-05-23 2021-04-06 Koninklijke Philips N.V. METHOD
US20110137661A1 (en) * 2008-08-08 2011-06-09 Panasonic Corporation Quantizing device, encoding device, quantizing method, and encoding method
KR101655913B1 (en) * 2008-09-17 2016-09-08 오렌지 Pre-echo attenuation in a digital audio 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
US8140342B2 (en) 2008-12-29 2012-03-20 Motorola Mobility, Inc. Selective scaling mask computation based on peak detection
US8200496B2 (en) 2008-12-29 2012-06-12 Motorola Mobility, Inc. Audio signal decoder and method for producing a scaled reconstructed audio signal
WO2011013381A1 (en) * 2009-07-31 2011-02-03 パナソニック株式会社 Coding device and decoding device
JP5295380B2 (en) * 2009-10-20 2013-09-18 パナソニック株式会社 Encoding device, decoding device and methods thereof
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
US9042560B2 (en) * 2009-12-23 2015-05-26 Nokia Corporation Sparse audio
US8442837B2 (en) 2009-12-31 2013-05-14 Motorola Mobility Llc Embedded speech and audio coding using a switchable model core
US8428936B2 (en) 2010-03-05 2013-04-23 Motorola Mobility Llc Decoder for audio signal including generic audio and speech frames
US8423355B2 (en) 2010-03-05 2013-04-16 Motorola Mobility Llc Encoder for audio signal including generic audio and speech frames
EP2544466A1 (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 subtractor
US9129600B2 (en) 2012-09-26 2015-09-08 Google Technology Holdings LLC Method and apparatus for encoding an audio signal
WO2014077254A1 (en) * 2012-11-15 2014-05-22 株式会社Ｎｔｔドコモ Audio coding device, audio coding method, audio coding program, audio decoding device, audio decoding method, and audio decoding program
US10060955B2 (en) * 2014-06-25 2018-08-28 Advanced Micro Devices, Inc. Calibrating power supply voltages using reference measurements from code loop executions
JP6804528B2 (en) 2015-09-25 2020-12-23 ヴォイスエイジ・コーポレーション Methods and systems that use the long-term correlation difference between the left and right channels to time domain downmix the stereo audio signal to the primary and secondary channels.
CN107742521B (en) 2016-08-10 2021-08-13 华为技术有限公司 Coding method and coder 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
CN115831130A (en) * 2018-06-29 2023-03-21 华为技术有限公司 Coding method, decoding method, coding device and decoding device for stereo signal
JP7337966B2 (en) * 2019-06-29 2023-09-04 華為技術有限公司 Stereo encoding method and apparatus, and stereo decoding method and apparatus

Family Cites Families (13)

* 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
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
JP3335605B2 (en) * 2000-03-13 2002-10-21 日本電信電話株式会社 Stereo signal encoding method
CN1244904C (en) * 2001-05-08 2006-03-08 皇家菲利浦电子有限公司 Audio coding
JP2003084790A (en) * 2001-09-17 2003-03-19 Matsushita Electric Ind Co Ltd Speech component emphasizing device
CN1219415C (en) * 2002-07-23 2005-09-14 华南理工大学 5.1 path surround sound earphone repeat signal processing method

Also Published As

Publication number Publication date
WO2005059899A1 (en) 2005-06-30
CA2690885C (en) 2014-01-21
JP2008026914A (en) 2008-02-07
BRPI0410856B1 (en) 2019-10-01
CN101118747A (en) 2008-02-06
PL1623411T3 (en) 2008-01-31
ATE371924T1 (en) 2007-09-15
SE527670C2 (en) 2006-05-09
JP2007529021A (en) 2007-10-18
DE602004008613T2 (en) 2008-06-12
SE0400417L (en) 2005-06-20
ATE443317T1 (en) 2009-10-15
BRPI0419281B1 (en) 2018-08-14
EP1623411B1 (en) 2007-08-29
CN101118747B (en) 2011-02-23
CA2690885A1 (en) 2005-06-30
MXPA05012230A (en) 2006-02-10
JP4589366B2 (en) 2010-12-01
DE602004008613D1 (en) 2007-10-11
EP1845519B1 (en) 2009-09-16
EP1845519A2 (en) 2007-10-17
ZA200508980B (en) 2007-03-28
SE0400417D0 (en) 2004-02-20
CA2527971C (en) 2011-03-15
JP4335917B2 (en) 2009-09-30
CN1816847A (en) 2006-08-09
BRPI0410856B8 (en) 2019-10-15
CN100559465C (en) 2009-11-11
DE602004023240D1 (en) 2009-10-29
AU2004298708A1 (en) 2005-06-30
RU2005134365A (en) 2006-05-27
EP1623411A1 (en) 2006-02-08
RU2425340C2 (en) 2011-07-27
AU2004298708B2 (en) 2008-01-03
BRPI0410856A (en) 2006-07-04
CA2527971A1 (en) 2005-06-30
RU2007121143A (en) 2008-12-10
EP1845519A3 (en) 2007-11-07
HK1115665A1 (en) 2008-12-05
RU2305870C2 (en) 2007-09-10

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