WO2010040522A3 - Multi-resolution switched audio encoding/decoding scheme - Google Patents

Multi-resolution switched audio encoding/decoding scheme Download PDF

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Publication number
WO2010040522A3
WO2010040522A3 PCT/EP2009/007205 EP2009007205W WO2010040522A3 WO 2010040522 A3 WO2010040522 A3 WO 2010040522A3 EP 2009007205 W EP2009007205 W EP 2009007205W WO 2010040522 A3 WO2010040522 A3 WO 2010040522A3
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WO
WIPO (PCT)
Prior art keywords
signal
time
audio
resolution
encoded
Prior art date
Application number
PCT/EP2009/007205
Other languages
French (fr)
Other versions
WO2010040522A2 (en
Inventor
Max Neuendorf
Stefan Bayer
Jérémie Lecomte
Guillaume Fuchs
Juiien Robilliard
Nikolaus Rettelbach
Frederik Nagel
Raif Geiger
Markus Multrus
Bernhard Grill
Philippe Gournay
Redwan Salami
Original Assignee
Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
Voiceage Corporation
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
Priority to JP2011530415A priority Critical patent/JP5555707B2/en
Priority to KR1020137011185A priority patent/KR20130069833A/en
Priority to EP19213835.2A priority patent/EP3640941A1/en
Priority to KR1020137031257A priority patent/KR20130133917A/en
Priority to EP09736835A priority patent/EP2345030A2/en
Priority to CA2739736A priority patent/CA2739736C/en
Priority to KR1020117010644A priority patent/KR101403115B1/en
Priority to TW102120721A priority patent/TWI520128B/en
Priority to BRPI0914056-5A priority patent/BRPI0914056B1/en
Application filed by Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V., Voiceage Corporation filed Critical Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
Priority to CN200980140055.XA priority patent/CN102177426B/en
Priority to TW098133982A priority patent/TWI419148B/en
Priority to MX2011003824A priority patent/MX2011003824A/en
Priority to AU2009301358A priority patent/AU2009301358B2/en
Priority to RU2011117699/08A priority patent/RU2520402C2/en
Priority to ARP090103876A priority patent/AR076060A1/en
Publication of WO2010040522A2 publication Critical patent/WO2010040522A2/en
Publication of WO2010040522A3 publication Critical patent/WO2010040522A3/en
Priority to ZA2011/02537A priority patent/ZA201102537B/en
Priority to US13/081,223 priority patent/US8447620B2/en
Priority to US13/707,192 priority patent/US9043215B2/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

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  • 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.
PCT/EP2009/007205 2008-10-08 2009-10-07 Multi-resolution switched audio encoding/decoding scheme WO2010040522A2 (en)

Priority Applications (18)

Application Number Priority Date Filing Date Title
RU2011117699/08A RU2520402C2 (en) 2008-10-08 2009-10-07 Multi-resolution switched audio encoding/decoding scheme
TW098133982A TWI419148B (en) 2008-10-08 2009-10-07 Multi-resolution switched audio encoding/decoding scheme
CN200980140055.XA CN102177426B (en) 2008-10-08 2009-10-07 Multi-resolution switched audio encoding/decoding scheme
MX2011003824A MX2011003824A (en) 2008-10-08 2009-10-07 Multi-resolution switched audio encoding/decoding scheme.
KR1020137011185A KR20130069833A (en) 2008-10-08 2009-10-07 Multi-resolution switched audio encoding/decoding scheme
CA2739736A CA2739736C (en) 2008-10-08 2009-10-07 Multi-resolution switched audio encoding/decoding scheme
KR1020117010644A KR101403115B1 (en) 2008-10-08 2009-10-07 Multi-resolution switched audio encoding/decoding method and appratus
TW102120721A TWI520128B (en) 2008-10-08 2009-10-07 Multi-resolution switched audio encoding/decoding scheme
BRPI0914056-5A BRPI0914056B1 (en) 2008-10-08 2009-10-07 MULTI-RESOLUTION SWITCHED AUDIO CODING / DECODING SCHEME
JP2011530415A JP5555707B2 (en) 2008-10-08 2009-10-07 Multi-resolution switching audio encoding and decoding scheme
EP19213835.2A EP3640941A1 (en) 2008-10-08 2009-10-07 Multi-resolution switched audio encoding/decoding scheme
EP09736835A EP2345030A2 (en) 2008-10-08 2009-10-07 Multi-resolution switched audio encoding/decoding scheme
KR1020137031257A KR20130133917A (en) 2008-10-08 2009-10-07 Multi-resolution switched audio encoding/decoding scheme
AU2009301358A AU2009301358B2 (en) 2008-10-08 2009-10-07 Multi-resolution switched audio encoding/decoding scheme
ARP090103876A AR076060A1 (en) 2008-10-08 2009-10-08 SCHEDULE OF MULTIPLE RESOLUTION SWITCHED AUDIO CODE / DECODIFICATION
ZA2011/02537A ZA201102537B (en) 2008-10-08 2011-04-06 Multi-resolution switched audio encoding/decoding scheme
US13/081,223 US8447620B2 (en) 2008-10-08 2011-04-06 Multi-resolution switched audio encoding/decoding scheme
US13/707,192 US9043215B2 (en) 2008-10-08 2012-12-06 Multi-resolution switched audio encoding/decoding scheme

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US10382508P 2008-10-08 2008-10-08
EP08017663.9 2008-10-08
EP08017663 2008-10-08
US61/103,825 2008-10-08
EP09002271.6 2009-02-18
EP09002271A EP2144230A1 (en) 2008-07-11 2009-02-18 Low bitrate audio encoding/decoding scheme having cascaded switches

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/081,223 Continuation US8447620B2 (en) 2008-10-08 2011-04-06 Multi-resolution switched audio encoding/decoding scheme

Publications (2)

Publication Number Publication Date
WO2010040522A2 WO2010040522A2 (en) 2010-04-15
WO2010040522A3 true WO2010040522A3 (en) 2010-09-02

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/007205 WO2010040522A2 (en) 2008-10-08 2009-10-07 Multi-resolution switched audio encoding/decoding scheme

Country Status (14)

Country Link
EP (2) EP3640941A1 (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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