ATE322734T1 - Audio kodierer mit unregelmässiger filterbank - Google Patents

Audio kodierer mit unregelmässiger filterbank

Info

Publication number
ATE322734T1
ATE322734T1 AT02755519T AT02755519T ATE322734T1 AT E322734 T1 ATE322734 T1 AT E322734T1 AT 02755519 T AT02755519 T AT 02755519T AT 02755519 T AT02755519 T AT 02755519T AT E322734 T1 ATE322734 T1 AT E322734T1
Authority
AT
Austria
Prior art keywords
filter bank
filters
segmentation
combined
group
Prior art date
Application number
AT02755519T
Other languages
English (en)
Inventor
Omar A Niamut
Richard Heusdens
Original Assignee
Koninkl Philips Electronics Nv
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 Koninkl Philips Electronics Nv filed Critical Koninkl Philips Electronics Nv
Application granted granted Critical
Publication of ATE322734T1 publication Critical patent/ATE322734T1/de

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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission
    • H04B1/667—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission using a division in frequency subbands
    • 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)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Analogue/Digital Conversion (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
AT02755519T 2001-08-21 2002-08-14 Audio kodierer mit unregelmässiger filterbank ATE322734T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP01203161 2001-08-21

Publications (1)

Publication Number Publication Date
ATE322734T1 true ATE322734T1 (de) 2006-04-15

Family

ID=8180810

Family Applications (1)

Application Number Title Priority Date Filing Date
AT02755519T ATE322734T1 (de) 2001-08-21 2002-08-14 Audio kodierer mit unregelmässiger filterbank

Country Status (7)

Country Link
US (1) US20040254797A1 (de)
EP (1) EP1421579B1 (de)
JP (1) JP2005501277A (de)
CN (1) CN1223992C (de)
AT (1) ATE322734T1 (de)
DE (1) DE60210479T2 (de)
WO (1) WO2003019532A1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7778196B2 (en) * 2005-05-31 2010-08-17 Avaya Inc. Method and apparatus for link performance measurements in a packet-switched network
ATE487337T1 (de) * 2005-08-02 2010-11-15 Gn Resound As Hörhilfegerät mit windgeräuschunterdrückung
EP1999747B1 (de) * 2006-03-29 2016-10-12 Koninklijke Philips N.V. Dekodierung von audiosignalen
TWI559679B (zh) * 2009-02-18 2016-11-21 杜比國際公司 低延遲調變濾波器組及用以設計該低延遲調變濾波器組之方法
PL4152320T3 (pl) * 2009-10-21 2024-02-19 Dolby International Ab Nadpróbkowanie w banku filtrów połączonym z modułem transpozycji
US10158375B1 (en) 2018-03-21 2018-12-18 Nxp Usa, Inc. PDM bitstream to PCM data converter using Walsh-Hadamard transform
TWI866996B (zh) 2019-06-26 2024-12-21 美商杜拜研究特許公司 具有改善頻率解析度的低延遲音訊濾波器組
CN120475316A (zh) 2019-09-03 2025-08-12 杜比实验室特许公司 具有解相关分量的音频滤波器组

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4790016A (en) * 1985-11-14 1988-12-06 Gte Laboratories Incorporated Adaptive method and apparatus for coding speech
US4754492A (en) * 1985-06-03 1988-06-28 Picturetel Corporation Method and system for adapting a digitized signal processing system for block processing with minimal blocking artifacts
US5109417A (en) * 1989-01-27 1992-04-28 Dolby Laboratories Licensing Corporation Low bit rate transform coder, decoder, and encoder/decoder for high-quality audio
DE3902948A1 (de) * 1989-02-01 1990-08-09 Telefunken Fernseh & Rundfunk Verfahren zur uebertragung eines signals
US5502789A (en) * 1990-03-07 1996-03-26 Sony Corporation Apparatus for encoding digital data with reduction of perceptible noise
US5285498A (en) * 1992-03-02 1994-02-08 At&T Bell Laboratories Method and apparatus for coding audio signals based on perceptual model
US5913186A (en) * 1996-03-25 1999-06-15 Prometheus, Inc. Discrete one dimensional signal processing apparatus and method using energy spreading coding
US5805739A (en) * 1996-04-02 1998-09-08 Picturetel Corporation Lapped orthogonal vector quantization
US5848391A (en) * 1996-07-11 1998-12-08 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Method subband of coding and decoding audio signals using variable length windows
US6115689A (en) * 1998-05-27 2000-09-05 Microsoft Corporation Scalable audio coder and decoder

Also Published As

Publication number Publication date
DE60210479T2 (de) 2007-04-12
JP2005501277A (ja) 2005-01-13
WO2003019532A1 (en) 2003-03-06
CN1223992C (zh) 2005-10-19
EP1421579B1 (de) 2006-04-05
EP1421579A1 (de) 2004-05-26
CN1545697A (zh) 2004-11-10
DE60210479D1 (de) 2006-05-18
US20040254797A1 (en) 2004-12-16

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