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AU2014200719B2 - Mdct-based complex prediction stereo coding - Google Patents
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AU2014200719B2 - Mdct-based complex prediction stereo coding - Google Patents

Mdct-based complex prediction stereo coding

Info

Publication number
AU2014200719B2
AU2014200719B2 AU2014200719A AU2014200719A AU2014200719B2 AU 2014200719 B2 AU2014200719 B2 AU 2014200719B2 AU 2014200719 A AU2014200719 A AU 2014200719A AU 2014200719 A AU2014200719 A AU 2014200719A AU 2014200719 B2 AU2014200719 B2 AU 2014200719B2
Authority
AU
Australia
Prior art keywords
frequency
complex prediction
domain
mdct
input
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
AU2014200719A
Other versions
AU2014200719A1 (en
Inventor
Pontus Carlsson
Heiko Purnhagen
Lars Villemoes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dolby International AB
Original Assignee
Dolby International AB
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 AU2011237869A external-priority patent/AU2011237869B2/en
Priority to AU2014200719A priority Critical patent/AU2014200719B2/en
Application filed by Dolby International AB filed Critical Dolby International AB
Publication of AU2014200719A1 publication Critical patent/AU2014200719A1/en
Application granted granted Critical
Publication of AU2014200719B2 publication Critical patent/AU2014200719B2/en
Priority to AU2016222372A priority patent/AU2016222372B2/en
Priority to AU2018236757A priority patent/AU2018236757B2/en
Priority to AU2019204026A priority patent/AU2019204026B2/en
Priority to AU2019240610A priority patent/AU2019240610B2/en
Priority to AU2020294304A priority patent/AU2020294304B2/en
Priority to AU2022202192A priority patent/AU2022202192B2/en
Priority to AU2023204124A priority patent/AU2023204124B2/en
Priority to AU2023274125A priority patent/AU2023274125B2/en
Priority to AU2024204426A priority patent/AU2024204426B2/en
Priority to AU2025200925A priority patent/AU2025200925B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • G10L19/002—Dynamic bit allocation
    • 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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/0212—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 spectral analysis, e.g. transform vocoders or subband vocoders using orthogonal transformation
    • 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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
    • 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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/03—Spectral prediction for preventing pre-echo; Temporary noise shaping [TNS], e.g. in MPEG2 or MPEG4
    • 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
    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
    • 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
    • G10L19/167—Audio streaming, i.e. formatting and decoding of an encoded audio signal representation into a data stream for transmission or storage purposes
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/008—Systems employing more than two channels, e.g. quadraphonic in which the audio signals are in digital form, i.e. employing more than two discrete digital channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
    • H04S2400/01—Multi-channel, i.e. more than two input channels, sound reproduction with two speakers wherein the multi-channel information is substantially preserved

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Computational Linguistics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mathematical Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Stereophonic System (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

The invention provides methods and devices for stereo encoding and decoding using complex prediction in the frequency domain. In one embodiment, a decoding method, for obtaining an output stereo signal from an input stereo signal encoded by complex prediction coding and comprising first frequency-domain representations of two input channels, comprises the upmixing steps of: (i) computing a second frequency-domain representation of a first input channel; and (ii) computing an output channel on the basis of the first and second frequency-domain representations of the first input channel, the first frequency-domain representation of the second input channel and a complex prediction coefficient. The upmixing can be suspended responsive to control data. C) 0 as C) 0 CC~i CD: IC) C'\I C\J l C\Jj LO' C)
AU2014200719A 2010-04-09 2014-02-11 Mdct-based complex prediction stereo coding Active AU2014200719B2 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
AU2014200719A AU2014200719B2 (en) 2010-04-09 2014-02-11 Mdct-based complex prediction stereo coding
AU2016222372A AU2016222372B2 (en) 2010-04-09 2016-08-31 Mdct-based complex prediction stereo coding
AU2018236757A AU2018236757B2 (en) 2010-04-09 2018-09-26 MDCT-Based Complex Prediction Stereo Coding
AU2019204026A AU2019204026B2 (en) 2010-04-09 2019-06-07 Audio Upmixer Operable in Prediction or Non-Prediction Mode
AU2019240610A AU2019240610B2 (en) 2010-04-09 2019-10-02 Audio Upmixer Operable in Prediction or Non-Prediction Mode
AU2020294304A AU2020294304B2 (en) 2010-04-09 2020-12-24 Audio Upmixer Operable in Prediction or Non-Prediction Mode
AU2022202192A AU2022202192B2 (en) 2010-04-09 2022-03-31 Audio Upmixer Operable in Prediction or Non-Prediction Mode
AU2023204124A AU2023204124B2 (en) 2010-04-09 2023-06-28 Audio Upmixer Operable in Prediction or Non-Prediction Mode
AU2023274125A AU2023274125B2 (en) 2010-04-09 2023-11-29 Audio Upmixer Operable in Prediction or Non-Prediction Mode
AU2024204426A AU2024204426B2 (en) 2010-04-09 2024-06-27 Audio Upmixer Operable in Prediction or Non-Prediction Mode
AU2025200925A AU2025200925B2 (en) 2010-04-09 2025-02-11 Audio Upmixer Operable in Prediction or Non-Prediction Mode

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US61/322,458 2010-04-09
AU2011237869A AU2011237869B2 (en) 2010-04-09 2011-04-06 MDCT-based complex prediction stereo coding
AU2014200719A AU2014200719B2 (en) 2010-04-09 2014-02-11 Mdct-based complex prediction stereo coding

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
AU2011237869A Division AU2011237869B2 (en) 2010-04-09 2011-04-06 MDCT-based complex prediction stereo coding

Related Child Applications (1)

Application Number Title Priority Date Filing Date
AU2016222372A Division AU2016222372B2 (en) 2010-04-09 2016-08-31 Mdct-based complex prediction stereo coding

Publications (2)

Publication Number Publication Date
AU2014200719A1 AU2014200719A1 (en) 2014-03-06
AU2014200719B2 true AU2014200719B2 (en) 2016-07-14

Family

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Family Applications (7)

Application Number Title Priority Date Filing Date
AU2014200719A Active AU2014200719B2 (en) 2010-04-09 2014-02-11 Mdct-based complex prediction stereo coding
AU2020294304A Active AU2020294304B2 (en) 2010-04-09 2020-12-24 Audio Upmixer Operable in Prediction or Non-Prediction Mode
AU2022202192A Active AU2022202192B2 (en) 2010-04-09 2022-03-31 Audio Upmixer Operable in Prediction or Non-Prediction Mode
AU2023204124A Active AU2023204124B2 (en) 2010-04-09 2023-06-28 Audio Upmixer Operable in Prediction or Non-Prediction Mode
AU2023274125A Active AU2023274125B2 (en) 2010-04-09 2023-11-29 Audio Upmixer Operable in Prediction or Non-Prediction Mode
AU2024204426A Active AU2024204426B2 (en) 2010-04-09 2024-06-27 Audio Upmixer Operable in Prediction or Non-Prediction Mode
AU2025200925A Active AU2025200925B2 (en) 2010-04-09 2025-02-11 Audio Upmixer Operable in Prediction or Non-Prediction Mode

Family Applications After (6)

Application Number Title Priority Date Filing Date
AU2020294304A Active AU2020294304B2 (en) 2010-04-09 2020-12-24 Audio Upmixer Operable in Prediction or Non-Prediction Mode
AU2022202192A Active AU2022202192B2 (en) 2010-04-09 2022-03-31 Audio Upmixer Operable in Prediction or Non-Prediction Mode
AU2023204124A Active AU2023204124B2 (en) 2010-04-09 2023-06-28 Audio Upmixer Operable in Prediction or Non-Prediction Mode
AU2023274125A Active AU2023274125B2 (en) 2010-04-09 2023-11-29 Audio Upmixer Operable in Prediction or Non-Prediction Mode
AU2024204426A Active AU2024204426B2 (en) 2010-04-09 2024-06-27 Audio Upmixer Operable in Prediction or Non-Prediction Mode
AU2025200925A Active AU2025200925B2 (en) 2010-04-09 2025-02-11 Audio Upmixer Operable in Prediction or Non-Prediction Mode

Country Status (1)

Country Link
AU (7) AU2014200719B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016184958A1 (en) * 2015-05-20 2016-11-24 Telefonaktiebolaget Lm Ericsson (Publ) Coding of multi-channel audio signals

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110236902A1 (en) * 2004-12-13 2011-09-29 Tyco Healthcare Group Lp Testing a patient population having a cardiovascular condition for drug efficacy
AU2007318506B2 (en) * 2006-11-10 2012-03-08 Iii Holdings 12, Llc Parameter decoding device, parameter encoding device, and parameter decoding method
US7885819B2 (en) * 2007-06-29 2011-02-08 Microsoft Corporation Bitstream syntax for multi-process audio decoding

Also Published As

Publication number Publication date
AU2020294304B2 (en) 2022-02-10
AU2025200925B2 (en) 2026-02-12
AU2023204124B2 (en) 2023-09-07
AU2023274125B2 (en) 2024-03-28
AU2024204426A1 (en) 2024-07-18
AU2022202192A1 (en) 2022-05-05
AU2014200719A1 (en) 2014-03-06
AU2023274125A1 (en) 2023-12-21
AU2023204124A1 (en) 2023-07-13
AU2020294304A1 (en) 2021-02-25
AU2025200925A1 (en) 2025-02-27
AU2024204426B2 (en) 2024-11-14
AU2022202192B2 (en) 2023-04-06

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