AU2002214496A1 - Enhancing perceptual performance of high frequency reconstruction coding methodsby adaptive filtering - Google Patents

Enhancing perceptual performance of high frequency reconstruction coding methodsby adaptive filtering

Info

Publication number
AU2002214496A1
AU2002214496A1 AU2002214496A AU1449602A AU2002214496A1 AU 2002214496 A1 AU2002214496 A1 AU 2002214496A1 AU 2002214496 A AU2002214496 A AU 2002214496A AU 1449602 A AU1449602 A AU 1449602A AU 2002214496 A1 AU2002214496 A1 AU 2002214496A1
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AU
Australia
Prior art keywords
high frequency
adaptive filtering
methodsby
frequency reconstruction
perceptual performance
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.)
Abandoned
Application number
AU2002214496A
Inventor
Per Ekstrand
Fredrik Henn
Kristofer Kjorling
Lars Villemoes
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.)
Coding Technologies Sweden AB
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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=20281813&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=AU2002214496(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Coding Technologies Sweden AB filed Critical Coding Technologies Sweden AB
Publication of AU2002214496A1 publication Critical patent/AU2002214496A1/en
Abandoned 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
    • 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
    • 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

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)
  • Quality & Reliability (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Networks Using Active Elements (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Amplifiers (AREA)
  • Filters And Equalizers (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)

Abstract

The present invention proposes a new method and a new apparatus for enhancement of audio source coding systems utilising high frequency reconstruction (HFR). It utilises adaptive filtering to reduce artifacts due to different tonal characteristics in different frequency ranges of an audio signal upon which HFR is performed. The present invention is applicable to both speech coding and natural audio coding systems.
AU2002214496A 2000-11-14 2001-11-13 Enhancing perceptual performance of high frequency reconstruction coding methodsby adaptive filtering Abandoned AU2002214496A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE0004163A SE0004163D0 (en) 2000-11-14 2000-11-14 Enhancing perceptual performance or high frequency reconstruction coding methods by adaptive filtering
SE0004163 2000-11-14
PCT/SE2001/002510 WO2002041301A1 (en) 2000-11-14 2001-11-13 Enhancing perceptual performance of high frequency reconstruction coding methods by adaptive filtering

Publications (1)

Publication Number Publication Date
AU2002214496A1 true AU2002214496A1 (en) 2002-05-27

Family

ID=20281813

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2002214496A Abandoned AU2002214496A1 (en) 2000-11-14 2001-11-13 Enhancing perceptual performance of high frequency reconstruction coding methodsby adaptive filtering

Country Status (14)

Country Link
US (2) US7003451B2 (en)
EP (1) EP1342230B1 (en)
JP (2) JP3954495B2 (en)
KR (1) KR100517229B1 (en)
CN (2) CN1267890C (en)
AT (1) ATE264533T1 (en)
AU (1) AU2002214496A1 (en)
DE (1) DE60102838T2 (en)
DK (1) DK1342230T3 (en)
ES (1) ES2215935T3 (en)
HK (1) HK1056429A1 (en)
PT (1) PT1342230E (en)
SE (1) SE0004163D0 (en)
WO (1) WO2002041301A1 (en)

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Also Published As

Publication number Publication date
ATE264533T1 (en) 2004-04-15
WO2002041301A1 (en) 2002-05-23
KR20030062338A (en) 2003-07-23
JP2006079106A (en) 2006-03-23
CN1766993A (en) 2006-05-03
DE60102838D1 (en) 2004-05-19
HK1056429A1 (en) 2004-02-13
DE60102838T2 (en) 2005-04-21
EP1342230A1 (en) 2003-09-10
CN1766993B (en) 2011-07-27
JP2004514179A (en) 2004-05-13
SE0004163D0 (en) 2000-11-14
EP1342230B1 (en) 2004-04-14
ES2215935T3 (en) 2004-10-16
US7433817B2 (en) 2008-10-07
US20020087304A1 (en) 2002-07-04
JP3954495B2 (en) 2007-08-08
DK1342230T3 (en) 2004-08-02
KR100517229B1 (en) 2005-09-27
PT1342230E (en) 2004-09-30
CN1481545A (en) 2004-03-10
US20060036432A1 (en) 2006-02-16
US7003451B2 (en) 2006-02-21
CN1267890C (en) 2006-08-02

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