MY154633A - Multi-resolution switched audio encoding/decoding scheme - Google Patents

Multi-resolution switched audio encoding/decoding scheme

Info

Publication number
MY154633A
MY154633A MYPI2011001560A MYPI20111560A MY154633A MY 154633 A MY154633 A MY 154633A MY PI2011001560 A MYPI2011001560 A MY PI2011001560A MY PI20111560 A MYPI20111560 A MY PI20111560A MY 154633 A MY154633 A MY 154633A
Authority
MY
Malaysia
Prior art keywords
signal
time
audio
resolution
encoded
Prior art date
Application number
MYPI2011001560A
Inventor
Neuendorf Max
Grill Bernhard
Gournay Philippe
Salami Redwan
Bayer Stefan
Lecomte Jérémie
Fuchs Guillaume
Robilliard Julien
Rettelbach Nikolaus
Nagel Frederik
Geiger Ralf
Multrus Markus
Original Assignee
Fraunhofer Ges Forschung
Voiceage Corp
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 EP09002271A external-priority patent/EP2144230A1/en
Application filed by Fraunhofer Ges Forschung, Voiceage Corp filed Critical Fraunhofer Ges Forschung
Publication of MY154633A publication Critical patent/MY154633A/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
    • G10L19/04—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
    • G10L19/24—Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding
    • 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
    • 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
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Quality & Reliability (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

AN AUDIO ENCODER FOR ENCODING AN AUDIO SIGNAL COMPRISES A FIRST CODING BRANCH (400), THE FIRST CODING BRANCH COMPRISING A FIRST CONVERTER (410) FOR CONVERTING A SIGNAL FROM A TIME DOMAIN INTO A FREQUENCY DOMAIN. FURTHERMORE, THE AUDIO ENCODER COMPRISES A SECOND CODING BRANCH (500) COMPRISING A SECOND TIME/FREQUENCY CONVERTER (523). ADDITIONALLY, A SIGNAL ANALYZER (300/525) FOR ANALYZING THE AUDIO SIGNAL IS PROVIDED. THE SIGNAL ANALYZER, ON THE HAND, DETERMINES WHETHER AN AUDIO PORTION IS EFFECTIVE IN THE ENCODER OUTPUT SIGNAL AS A FIRST ENCODED SIGNAL FROM THE FIRST ENCODING BRANCH OR AS A SECOND ENCODED SIGNAL FROM A SECOND ENCODING BRANCH. ON THE OTHER HAND, THE SIGNAL ANALYZER DETERMINES A TIME/FREQUENCY RESOLUTION TO BE APPLIED BY THE CONVERTERS (410, 523) WHEN GENERATING THE ENCODED SIGNALS. AN OUTPUT INTERFACE INCLUDES, IN ADDITION TO THE FIRST ENCODED SIGNAL AND THE SECOND ENCODED SIGNAL, A RESOLUTION INFORMATION IDENTIFYING THE RESOLUTION USED BY THE FIRST TIME/FREQUENCY CONVERTER AND USED BY THE SECOND TIME/FREQUENCY CONVERTER.
MYPI2011001560A 2008-10-08 2009-10-07 Multi-resolution switched audio encoding/decoding scheme MY154633A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10382508P 2008-10-08 2008-10-08
EP08017663 2008-10-08
EP09002271A EP2144230A1 (en) 2008-07-11 2009-02-18 Low bitrate audio encoding/decoding scheme having cascaded switches

Publications (1)

Publication Number Publication Date
MY154633A true MY154633A (en) 2015-07-15

Family

ID=42101010

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI2011001560A MY154633A (en) 2008-10-08 2009-10-07 Multi-resolution switched audio encoding/decoding scheme

Country Status (14)

Country Link
EP (2) EP2345030A2 (en)
JP (1) JP5555707B2 (en)
KR (3) KR20130069833A (en)
CN (1) CN102177426B (en)
AR (1) AR076060A1 (en)
BR (1) BRPI0914056B1 (en)
CA (1) CA2739736C (en)
CO (1) CO6362072A2 (en)
MX (1) MX2011003824A (en)
MY (1) MY154633A (en)
RU (1) RU2520402C2 (en)
TW (2) TWI419148B (en)
WO (1) WO2010040522A2 (en)
ZA (1) ZA201102537B (en)

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CN102177426A (en) 2011-09-07
AU2009301358A1 (en) 2010-04-15
MX2011003824A (en) 2011-05-02
TWI419148B (en) 2013-12-11
WO2010040522A3 (en) 2010-09-02
CO6362072A2 (en) 2012-01-20
JP5555707B2 (en) 2014-07-23
BRPI0914056B1 (en) 2019-07-02
TW201142827A (en) 2011-12-01
BRPI0914056A2 (en) 2015-11-03
KR20110081291A (en) 2011-07-13
EP3640941A1 (en) 2020-04-22
CN102177426B (en) 2014-11-05
KR20130133917A (en) 2013-12-09
TWI520128B (en) 2016-02-01
RU2520402C2 (en) 2014-06-27
KR20130069833A (en) 2013-06-26
JP2012505423A (en) 2012-03-01
RU2011117699A (en) 2012-11-10
EP2345030A2 (en) 2011-07-20
CA2739736A1 (en) 2010-04-15
AU2009301358A8 (en) 2011-05-26
TW201344679A (en) 2013-11-01
KR101403115B1 (en) 2014-06-27
ZA201102537B (en) 2011-12-28
CA2739736C (en) 2015-12-01
AR076060A1 (en) 2011-05-18
WO2010040522A2 (en) 2010-04-15

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