DE602004004818D1 - Audiosignalcodierung oder -decodierung - Google Patents

Audiosignalcodierung oder -decodierung

Info

Publication number
DE602004004818D1
DE602004004818D1 DE602004004818T DE602004004818T DE602004004818D1 DE 602004004818 D1 DE602004004818 D1 DE 602004004818D1 DE 602004004818 T DE602004004818 T DE 602004004818T DE 602004004818 T DE602004004818 T DE 602004004818T DE 602004004818 D1 DE602004004818 D1 DE 602004004818D1
Authority
DE
Germany
Prior art keywords
subband signals
downsampled
subband
audio
channel
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
DE602004004818T
Other languages
English (en)
Other versions
DE602004004818T2 (de
Inventor
F Villemoes
Per Ekstrand
Heiko Purnhagen
G Schuijers
Bont J De
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.)
Koninklijke Philips NV
Coding Technologies Sweden AB
Original Assignee
Koninklijke Philips Electronics NV
Coding Technologies Sweden 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34530779&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE602004004818(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Koninklijke Philips Electronics NV, Coding Technologies Sweden AB filed Critical Koninklijke Philips Electronics NV
Publication of DE602004004818D1 publication Critical patent/DE602004004818D1/de
Application granted granted Critical
Publication of DE602004004818T2 publication Critical patent/DE602004004818T2/de
Anticipated expiration legal-status Critical
Active 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
    • G10L19/008—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
    • G10L19/02—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
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0248—Filters characterised by a particular frequency response or filtering method
    • H03H17/0264—Filter sets with mutual related characteristics
    • H03H17/0266—Filter banks

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Signal Processing (AREA)
  • Computational Linguistics (AREA)
  • Mathematical Physics (AREA)
  • Quality & Reliability (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Stereophonic System (AREA)
  • Insulated Conductors (AREA)
DE602004004818T 2003-10-30 2004-10-28 Audiosignalcodierung oder -decodierung Active DE602004004818T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP03104034 2003-10-30
EP03104034 2003-10-30
PCT/IB2004/052226 WO2005043511A1 (en) 2003-10-30 2004-10-28 Audio signal encoding or decoding

Publications (2)

Publication Number Publication Date
DE602004004818D1 true DE602004004818D1 (de) 2007-03-29
DE602004004818T2 DE602004004818T2 (de) 2007-12-06

Family

ID=34530779

Family Applications (1)

Application Number Title Priority Date Filing Date
DE602004004818T Active DE602004004818T2 (de) 2003-10-30 2004-10-28 Audiosignalcodierung oder -decodierung

Country Status (12)

Country Link
US (3) US7519538B2 (de)
EP (1) EP1683133B1 (de)
JP (4) JP4966013B2 (de)
KR (2) KR101217649B1 (de)
CN (2) CN101540171B (de)
AT (1) ATE354160T1 (de)
BR (2) BR122018007834B1 (de)
DE (1) DE602004004818T2 (de)
ES (1) ES2282899T3 (de)
PL (1) PL1683133T3 (de)
RU (1) RU2374703C2 (de)
WO (1) WO2005043511A1 (de)

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