ES2119932T3 - Formateo de señal codificada para codificador y descodificador de sistema de audio de alta calidad. - Google Patents

Formateo de señal codificada para codificador y descodificador de sistema de audio de alta calidad.

Info

Publication number
ES2119932T3
ES2119932T3 ES94107838T ES94107838T ES2119932T3 ES 2119932 T3 ES2119932 T3 ES 2119932T3 ES 94107838 T ES94107838 T ES 94107838T ES 94107838 T ES94107838 T ES 94107838T ES 2119932 T3 ES2119932 T3 ES 2119932T3
Authority
ES
Spain
Prior art keywords
subband
represented
information
variable
numbers
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
ES94107838T
Other languages
English (en)
Inventor
Louis Dunn Fielder
Mark Franklin Davis
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27404960&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES2119932(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from US07/458,894 external-priority patent/US5109417A/en
Application filed by Dolby Laboratories Licensing Corp filed Critical Dolby Laboratories Licensing Corp
Application granted granted Critical
Publication of ES2119932T3 publication Critical patent/ES2119932T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • 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
    • G10L19/0212—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 orthogonal transformation
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding
    • G06T9/005—Statistical coding, e.g. Huffman, run length coding
    • 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)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Acoustics & Sound (AREA)
  • General Physics & Mathematics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Computational Linguistics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Health & Medical Sciences (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Analogue/Digital Conversion (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Error Detection And Correction (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)

Abstract

UN CODIFICADOR APLICA UN BANCO DE FILTROS DIGITALES TALES COMO UN BANCO DE FILTROS DE TRANSFORMACION O DE SUBBANDA A UNA SEÑAL DE ENTRADA PARA GENERAR UNA INFORMACION DE SUBBANDA DE FRECUENCIA, CODIFICA LA INFORMACION DE LA SUBBANDA RESULTANTE USANDO UNA UBICACION ADAPTATIVA DE BITS PARA GENERAR VALORES DE LONGITUD FIJA REPRESENTADOS POR NUMEROS FIJOS DE BITS Y VALORES DE LONGITUD VARIABLE REPRESENTADOS POR NUMEROS VARIABLES DE BITS, Y FORMATEA LA INFORMACION DE LA SUBBANDA EN UNA SEÑAL CODIFICADA EN LA CUAL LOS VALORES DE LONGITUD FIJA SE ENSAMBLA EN POSICIONES PREESTABLECIDAS DENTRO DE LA SEÑAL CODIFICADA. EN RESPUESTA A UNA SEÑAL CODIFICADA QUE INCLUYA INFORMACION DE SUBBANDA REPRESENTADA POR VALORES DE LONGITUD FIJA Y VALORES DE LONGITUD VARIABLE, UN DESCODIFICADOR EXTRAE LOS VALORES DE LONGITUD FIJA REPRESENTADOS POR NUMEROS FIJOS DE BITS DE LAS POSICIONES PREESTABLECIDAS DENTRO DE LA SEÑAL CODIFICADA, EXTRAE LOS VALORES DE LONGITUD VARIABLE REPRESENTADOS POR NUMEROS VARIABLES DE BITSSE ESTABLECEN EN RESPUESTA CON LOS VALORES DE LONGITUD FIJA, Y GENERA UNA SEÑAL DE SALIDA APLICANDO UN BANCO DE FILTRADO INVERSO A LA INFORMACION DE SUBBANDA EXTRAIDA.
ES94107838T 1989-01-27 1990-01-29 Formateo de señal codificada para codificador y descodificador de sistema de audio de alta calidad. Expired - Lifetime ES2119932T3 (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US30371489A 1989-01-27 1989-01-27
US43986889A 1989-11-20 1989-11-20
US07/458,894 US5109417A (en) 1989-01-27 1989-12-29 Low bit rate transform coder, decoder, and encoder/decoder for high-quality audio

Publications (1)

Publication Number Publication Date
ES2119932T3 true ES2119932T3 (es) 1998-10-16

Family

ID=27404960

Family Applications (2)

Application Number Title Priority Date Filing Date
ES94107838T Expired - Lifetime ES2119932T3 (es) 1989-01-27 1990-01-29 Formateo de señal codificada para codificador y descodificador de sistema de audio de alta calidad.
ES90903695T Expired - Lifetime ES2065524T3 (es) 1989-01-27 1990-01-29 Codificador, descodificador, y codificador/descodificador de transformacion con tiempo de retardo corto para alta calidad de audio.

Family Applications After (1)

Application Number Title Priority Date Filing Date
ES90903695T Expired - Lifetime ES2065524T3 (es) 1989-01-27 1990-01-29 Codificador, descodificador, y codificador/descodificador de transformacion con tiempo de retardo corto para alta calidad de audio.

Country Status (12)

Country Link
EP (2) EP0610975B1 (es)
JP (2) JP2811369B2 (es)
KR (4) KR100220861B1 (es)
AT (2) ATE116495T1 (es)
AU (1) AU643677B2 (es)
BR (1) BR9007062A (es)
CA (5) CA2340610C (es)
DE (2) DE69032624T2 (es)
DK (2) DK0610975T3 (es)
ES (2) ES2119932T3 (es)
SG (1) SG82549A1 (es)
WO (1) WO1990009064A1 (es)

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Also Published As

Publication number Publication date
CA2332407A1 (en) 1990-07-28
ATE170682T1 (de) 1998-09-15
CA2026213A1 (en) 1991-05-21
CA2026207A1 (en) 1990-07-28
KR100214252B1 (ko) 2000-03-15
DK0610975T3 (da) 1999-05-31
JPH1188185A (ja) 1999-03-30
EP0610975A3 (en) 1994-12-14
KR910700526A (ko) 1991-03-15
JP3093179B2 (ja) 2000-10-03
EP0610975B1 (en) 1998-09-02
EP0610975A2 (en) 1994-08-17
SG82549A1 (en) 2001-08-21
AU5156390A (en) 1990-08-24
CA2026213C (en) 1995-04-04
KR920702100A (ko) 1992-08-12
KR100220862B1 (ko) 1999-09-15
ATE116495T1 (de) 1995-01-15
DE69015613T2 (de) 1995-05-24
CA2026207C (en) 1995-04-11
KR100214253B1 (ko) 2000-03-15
CA2140678A1 (en) 1990-07-28
BR9007062A (pt) 1991-10-08
WO1990009064A1 (en) 1990-08-09
DK0447495T3 (da) 1995-04-24
JP2811369B2 (ja) 1998-10-15
DE69032624D1 (de) 1998-10-08
KR100220861B1 (ko) 1999-09-15
EP0447495B1 (en) 1994-12-28
CA2140678C (en) 2001-05-01
DE69015613D1 (de) 1995-02-09
EP0447495A1 (en) 1991-09-25
JPH04503136A (ja) 1992-06-04
CA2332407C (en) 2002-03-05
KR19990037843A (ko) 1999-05-25
AU643677B2 (en) 1993-11-25
ES2065524T3 (es) 1995-02-16
DE69032624T2 (de) 1999-03-25
CA2340610C (en) 2002-03-05

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