ES2143312T3 - Codificacion y decodificacion de señales audio con la utilizacion de intensidad estereo y prediccion. - Google Patents

Codificacion y decodificacion de señales audio con la utilizacion de intensidad estereo y prediccion.

Info

Publication number
ES2143312T3
ES2143312T3 ES97927117T ES97927117T ES2143312T3 ES 2143312 T3 ES2143312 T3 ES 2143312T3 ES 97927117 T ES97927117 T ES 97927117T ES 97927117 T ES97927117 T ES 97927117T ES 2143312 T3 ES2143312 T3 ES 2143312T3
Authority
ES
Spain
Prior art keywords
prediction
coding
stereo
audio signals
intensity
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
ES97927117T
Other languages
English (en)
Inventor
Uwe Gbur
Martin Dietz
Karlheinz Brandenburg
Heinz Gerhauser
Jurgen Herre
Schuyler Quackenbush
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.)
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
AT&T Labs Inc
Nokia of America Corp
Original Assignee
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Lucent Technologies Inc
AT&T Labs Inc
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 Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV, Lucent Technologies Inc, AT&T Labs Inc filed Critical Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Application granted granted Critical
Publication of ES2143312T3 publication Critical patent/ES2143312T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S1/00—Two-channel systems
    • 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
    • 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
    • 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
    • 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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
    • H04B14/06—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using differential modulation, e.g. delta modulation
    • H04B14/066—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using differential modulation, e.g. delta modulation using differential modulation with several bits [NDPCM]
    • H04B14/068—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using differential modulation, e.g. delta modulation using differential modulation with several bits [NDPCM] with adaptive feedback
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S1/00—Two-channel systems
    • H04S1/007—Two-channel systems in which the audio signals are in digital form
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • 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
    • G10L19/04—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 predictive techniques

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Mathematical Physics (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)

Abstract

EN LA CODIFICACION Y DESCODIFICACION DE VALORES ESPECTRALES ESTEREOFONICOS, TANTO EL PROCESO ESTEREO DE INTENSIDAD Y PROCESO DE PREDICCION SON UTILIZADOS PARA CONSEGUIR UNA COMPRESION DE DATOS ALTA. CUANDO UNA CODIFICACION ESTEREO DE INTENSIDAD ES ACTIVA EN UNA SECCION COMPUESTA DE BANDAS (28) DE FACTOR DE ESCALA, ES DESACTIVADA LA PREDICCION PARA EL CANAL (R) DERECHO EN ESTA AREA, DE TAL FORMA QUE LOS RESULTADOS DE PREDICCION NO SON UTILIZADOS PARA LA FORMACION DE LOS VALORES ESPECTRALES ESTEREOFONICOS CODIFICADOS. EL PREDICTOR DEL CANAL (R) DERECHO ES SUMINISTRADO CON VALORES ESPECTRALES ESTEREOFONICOS PARA ESTE CANAL, QUE SON DESCODIFICADOS MEDIANTE UN PROCESO ESTEREO DE INTENSIDAD, DE TAL FORMA QUE LA PREDICCION PARA EL CANAL (R) DERECHO PUEDE CONTINUAR PARA ADAPTARSE POR SI MISMO.
ES97927117T 1996-07-12 1997-06-03 Codificacion y decodificacion de señales audio con la utilizacion de intensidad estereo y prediccion. Expired - Lifetime ES2143312T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19628293A DE19628293C1 (de) 1996-07-12 1996-07-12 Codieren und Decodieren von Audiosignalen unter Verwendung von Intensity-Stereo und Prädiktion

Publications (1)

Publication Number Publication Date
ES2143312T3 true ES2143312T3 (es) 2000-05-01

Family

ID=7799743

Family Applications (1)

Application Number Title Priority Date Filing Date
ES97927117T Expired - Lifetime ES2143312T3 (es) 1996-07-12 1997-06-03 Codificacion y decodificacion de señales audio con la utilizacion de intensidad estereo y prediccion.

Country Status (14)

Country Link
US (1) US6341165B1 (es)
EP (1) EP0910928B1 (es)
JP (1) JP3502639B2 (es)
KR (1) KR100299528B1 (es)
AT (1) ATE188833T1 (es)
AU (1) AU707665B2 (es)
CA (1) CA2260222C (es)
DE (2) DE19628293C1 (es)
DK (1) DK0910928T3 (es)
ES (1) ES2143312T3 (es)
GR (1) GR3032445T3 (es)
NO (1) NO316972B1 (es)
PT (1) PT910928E (es)
WO (1) WO1998003037A1 (es)

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Also Published As

Publication number Publication date
EP0910928A1 (de) 1999-04-28
US6341165B1 (en) 2002-01-22
AU707665B2 (en) 1999-07-15
AU3172297A (en) 1998-02-09
ATE188833T1 (de) 2000-01-15
PT910928E (pt) 2000-04-28
KR100299528B1 (ko) 2001-10-29
NO990107L (no) 1999-03-10
NO990107D0 (no) 1999-01-11
NO316972B1 (no) 2004-07-12
EP0910928B1 (de) 2000-01-12
CA2260222A1 (en) 1998-01-22
DK0910928T3 (da) 2000-05-08
JPH11514181A (ja) 1999-11-30
CA2260222C (en) 2000-10-17
KR20000022434A (ko) 2000-04-25
WO1998003037A1 (de) 1998-01-22
JP3502639B2 (ja) 2004-03-02
GR3032445T3 (en) 2000-05-31
DE19628293C1 (de) 1997-12-11
DE59701015D1 (de) 2000-02-17

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