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WO2008114078A8 - Codeur - Google Patents

Codeur Download PDF

Info

Publication number
WO2008114078A8
WO2008114078A8 PCT/IB2007/001712 IB2007001712W WO2008114078A8 WO 2008114078 A8 WO2008114078 A8 WO 2008114078A8 IB 2007001712 W IB2007001712 W IB 2007001712W WO 2008114078 A8 WO2008114078 A8 WO 2008114078A8
Authority
WO
WIPO (PCT)
Prior art keywords
encoder
audio signal
further configured
signal
synthesized audio
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.)
Ceased
Application number
PCT/IB2007/001712
Other languages
English (en)
Other versions
WO2008114078A1 (fr
Inventor
Adriana Vasilache
Marcel Vasilache
Anssi Ramo
Lasse Laaksonen
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.)
Nokia Inc
Original Assignee
Nokia Inc
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
Application filed by Nokia Inc filed Critical Nokia Inc
Priority to PCT/IB2007/001712 priority Critical patent/WO2008114078A1/fr
Publication of WO2008114078A1 publication Critical patent/WO2008114078A1/fr
Anticipated expiration legal-status Critical
Publication of WO2008114078A8 publication Critical patent/WO2008114078A8/fr
Ceased legal-status Critical Current

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
    • G10L19/02—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
    • G10L19/0204—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 subband decomposition
    • G10L19/0208—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
    • G10L19/02—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

Landscapes

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

Abstract

L'invention concerne un codeur configuré pour recevoir un signal audio. Ce codeur est également configuré pour générer un signal audio synthétisé et un signal de différence. Le codeur selon l'invention est également configuré pour étalonner le signal de différence en fonction du signal audio synthétisé.
PCT/IB2007/001712 2007-03-16 2007-03-16 Codeur Ceased WO2008114078A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IB2007/001712 WO2008114078A1 (fr) 2007-03-16 2007-03-16 Codeur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2007/001712 WO2008114078A1 (fr) 2007-03-16 2007-03-16 Codeur

Publications (2)

Publication Number Publication Date
WO2008114078A1 WO2008114078A1 (fr) 2008-09-25
WO2008114078A8 true WO2008114078A8 (fr) 2010-08-12

Family

ID=38562950

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/001712 Ceased WO2008114078A1 (fr) 2007-03-16 2007-03-16 Codeur

Country Status (1)

Country Link
WO (1) WO2008114078A1 (fr)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7983904B2 (en) * 2004-11-05 2011-07-19 Panasonic Corporation Scalable decoding apparatus and scalable encoding apparatus

Also Published As

Publication number Publication date
WO2008114078A1 (fr) 2008-09-25

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