ES2176722T3 - Sistema de filtrado de analisis/sintesis con bancos de filtros eficaces de banda lateral unica con apilamiento no uniforme, que utiliza cancelacion de solapamiento de espectro en el dominio del tiempo. - Google Patents

Sistema de filtrado de analisis/sintesis con bancos de filtros eficaces de banda lateral unica con apilamiento no uniforme, que utiliza cancelacion de solapamiento de espectro en el dominio del tiempo.

Info

Publication number
ES2176722T3
ES2176722T3 ES97915117T ES97915117T ES2176722T3 ES 2176722 T3 ES2176722 T3 ES 2176722T3 ES 97915117 T ES97915117 T ES 97915117T ES 97915117 T ES97915117 T ES 97915117T ES 2176722 T3 ES2176722 T3 ES 2176722T3
Authority
ES
Spain
Prior art keywords
domain
time
analysis
single side
side band
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.)
Expired - Lifetime
Application number
ES97915117T
Other languages
English (en)
Inventor
Marina Bosi-Goldberg
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.)
Dolby Laboratories Licensing Corp
Original Assignee
Dolby Laboratories Licensing Corp
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 Dolby Laboratories Licensing Corp filed Critical Dolby Laboratories Licensing Corp
Application granted granted Critical
Publication of ES2176722T3 publication Critical patent/ES2176722T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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
    • H04B1/665—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 psychoacoustic properties of the ear, e.g. masking effect

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Stereophonic System (AREA)
  • Complex Calculations (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Filters And Equalizers (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

UNOS BANCOS DE FILTROS DE ANALISIS/SINTESIS DE UNA SOLA BANDA APILADOS DE FORMA DESIGUAL MUESTREADOS DE FORMA CRITICA DE IMPLEMENTACION EFICIENTE SE CONSIGUEN MEDIANTE LA APLICACION DE UN CONJUNTO DE FUNCIONES A UNOS VALORES DE FRECUENCIA-DOMINIO Y TIEMPO-DOMINIO ANTES Y DESPUES DE SUS TRANSFORMACIONES. SE DESCRIBE UN IMPLEMENTACION DE UNAS CANCELACIONES DE SOLAPAMIENTO EN DOMINIO DE TIEMPO APILADAS DE FORMA DESIGUAL QUE PERMITE SELECCIONAR DE FORMA ADAPTATIVA LA LONGITUD DE LA TRANSFORMACION.
ES97915117T 1996-03-19 1997-03-17 Sistema de filtrado de analisis/sintesis con bancos de filtros eficaces de banda lateral unica con apilamiento no uniforme, que utiliza cancelacion de solapamiento de espectro en el dominio del tiempo. Expired - Lifetime ES2176722T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US61850696A 1996-03-19 1996-03-19

Publications (1)

Publication Number Publication Date
ES2176722T3 true ES2176722T3 (es) 2002-12-01

Family

ID=24478002

Family Applications (1)

Application Number Title Priority Date Filing Date
ES97915117T Expired - Lifetime ES2176722T3 (es) 1996-03-19 1997-03-17 Sistema de filtrado de analisis/sintesis con bancos de filtros eficaces de banda lateral unica con apilamiento no uniforme, que utiliza cancelacion de solapamiento de espectro en el dominio del tiempo.

Country Status (10)

Country Link
EP (1) EP0827647B1 (es)
JP (1) JP4033906B2 (es)
KR (1) KR100424036B1 (es)
AT (1) ATE220831T1 (es)
AU (1) AU712719B2 (es)
CA (1) CA2221845C (es)
DE (1) DE69713971T2 (es)
DK (1) DK0827647T3 (es)
ES (1) ES2176722T3 (es)
WO (1) WO1997035386A1 (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5899969A (en) * 1997-10-17 1999-05-04 Dolby Laboratories Licensing Corporation Frame-based audio coding with gain-control words
US5913191A (en) * 1997-10-17 1999-06-15 Dolby Laboratories Licensing Corporation Frame-based audio coding with additional filterbank to suppress aliasing artifacts at frame boundaries
US20090099844A1 (en) * 2007-10-16 2009-04-16 Qualcomm Incorporated Efficient implementation of analysis and synthesis filterbanks for mpeg aac and mpeg aac eld encoders/decoders

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR9007063A (pt) * 1989-01-27 1991-10-08 Dolby Lab Licensing Corp Codificador,descodificador e codificador/descodificador de transformada de taxa de bites baixa para audio de alta qualidade
KR100220862B1 (ko) * 1989-01-27 1999-09-15 쥬더 에드 에이. 고품질 오디오용 저속 비트 변환 코더, 디코더 및 인코더/디코더
US5297236A (en) * 1989-01-27 1994-03-22 Dolby Laboratories Licensing Corporation Low computational-complexity digital filter bank for encoder, decoder, and encoder/decoder

Also Published As

Publication number Publication date
KR100424036B1 (ko) 2004-07-05
DE69713971T2 (de) 2003-03-20
WO1997035386A1 (en) 1997-09-25
DK0827647T3 (da) 2002-09-02
JP4033906B2 (ja) 2008-01-16
JPH11507492A (ja) 1999-06-29
EP0827647B1 (en) 2002-07-17
EP0827647A1 (en) 1998-03-11
KR19990014716A (ko) 1999-02-25
AU2214097A (en) 1997-10-10
DE69713971D1 (de) 2002-08-22
CA2221845A1 (en) 1997-09-25
CA2221845C (en) 2004-06-08
ATE220831T1 (de) 2002-08-15
AU712719B2 (en) 1999-11-11

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