BRPI0917762A2 - codificador de áudio e decodificador de extensão de largura de banda - Google Patents

codificador de áudio e decodificador de extensão de largura de banda

Info

Publication number
BRPI0917762A2
BRPI0917762A2 BRPI0917762A BRPI0917762A BRPI0917762A2 BR PI0917762 A2 BRPI0917762 A2 BR PI0917762A2 BR PI0917762 A BRPI0917762 A BR PI0917762A BR PI0917762 A BRPI0917762 A BR PI0917762A BR PI0917762 A2 BRPI0917762 A2 BR PI0917762A2
Authority
BR
Brazil
Prior art keywords
audio encoder
bandwidth extension
extension decoder
decoder
bandwidth
Prior art date
Application number
BRPI0917762A
Other languages
English (en)
Inventor
Christian Griebel
Frederik Nagel
Guillaume Fuchs
Jürgen Herre
Sascha Disch
Original Assignee
Fraunhofer Ges Forschung
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 Fraunhofer Ges Forschung filed Critical Fraunhofer Ges Forschung
Priority to BR122015019030-4A priority Critical patent/BR122015019030B1/pt
Publication of BRPI0917762A2 publication Critical patent/BRPI0917762A2/pt
Publication of BRPI0917762B1 publication Critical patent/BRPI0917762B1/pt

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
    • G10L19/02—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
    • G10L19/26—Pre-filtering or post-filtering
    • G10L19/265—Pre-filtering, e.g. high frequency emphasis prior to 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
    • 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
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading 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
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/04—Time compression or expansion
    • 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

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)
  • Quality & Reliability (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Circuits Of Receivers In General (AREA)
  • Stereophonic System (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Amplifiers (AREA)
BRPI0917762-0A 2008-12-15 2009-12-11 Codificador de áudio e decodificador de extensão de largura de banda BRPI0917762B1 (pt)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BR122015019030-4A BR122015019030B1 (pt) 2008-12-15 2009-12-11 codificador de audio e decodificador de extensão de largura de banda

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US12255208P 2008-12-15 2008-12-15
US61/122,552 2008-12-15
PCT/EP2009/066980 WO2010069885A1 (en) 2008-12-15 2009-12-11 Audio encoder and bandwidth extension decoder

Publications (2)

Publication Number Publication Date
BRPI0917762A2 true BRPI0917762A2 (pt) 2016-07-26
BRPI0917762B1 BRPI0917762B1 (pt) 2020-09-29

Family

ID=42104496

Family Applications (2)

Application Number Title Priority Date Filing Date
BR122015019030-4A BR122015019030B1 (pt) 2008-12-15 2009-12-11 codificador de audio e decodificador de extensão de largura de banda
BRPI0917762-0A BRPI0917762B1 (pt) 2008-12-15 2009-12-11 Codificador de áudio e decodificador de extensão de largura de banda

Family Applications Before (1)

Application Number Title Priority Date Filing Date
BR122015019030-4A BR122015019030B1 (pt) 2008-12-15 2009-12-11 codificador de audio e decodificador de extensão de largura de banda

Country Status (16)

Country Link
US (13) US8401862B2 (pt)
EP (12) EP4224474B1 (pt)
JP (3) JP2012512437A (pt)
KR (2) KR101369267B1 (pt)
CN (1) CN102246231B (pt)
AU (1) AU2009328247B9 (pt)
BR (2) BR122015019030B1 (pt)
CA (5) CA2989886C (pt)
DK (1) DK3364414T3 (pt)
ES (12) ES2968884T3 (pt)
HU (9) HUE064773T2 (pt)
MX (1) MX2011006163A (pt)
PL (12) PL2945159T3 (pt)
PT (3) PT2359366T (pt)
TR (1) TR201808500T4 (pt)
WO (1) WO2010069885A1 (pt)

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