MX9600574A - Metodo y aparato de codificacion de señales, metodo y aparato de descodificacion de señales, y aparato de transmision de señales. - Google Patents

Metodo y aparato de codificacion de señales, metodo y aparato de descodificacion de señales, y aparato de transmision de señales.

Info

Publication number
MX9600574A
MX9600574A MX9600574A MX9600574A MX9600574A MX 9600574 A MX9600574 A MX 9600574A MX 9600574 A MX9600574 A MX 9600574A MX 9600574 A MX9600574 A MX 9600574A MX 9600574 A MX9600574 A MX 9600574A
Authority
MX
Mexico
Prior art keywords
signal
noise components
recording medium
encoding
channels
Prior art date
Application number
MX9600574A
Other languages
English (en)
Inventor
Yoshiaki Oikawa
Kyoya Tsutsui
Shinji Miyamori
Masatoshi Ueno
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Publication of MX9600574A publication Critical patent/MX9600574A/es

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/86—Arrangements characterised by the broadcast information itself
    • H04H20/88—Stereophonic broadcast systems
    • 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
    • G10L19/012—Comfort noise or silence coding
    • 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
    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes
    • 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
    • G11B20/24—Signal processing not specific to the method of recording or reproducing; Circuits therefor for reducing noise
    • 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
    • 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
    • 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
    • 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
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • G11B2020/10537—Audio or video recording
    • G11B2020/10592—Audio or video recording specifically adapted for recording or reproducing multichannel signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

Con el método y aparato de codificacion de señales de conformidad con la presente invencion, los componentes de ruido de los canales multiples se codifican individualmente mediante una primera unidad (124) de codificacion, mientras que los componentes de ruido de los canales multiples se codifican en comun mediante una segunda unidad (125) de codificacion. Una unidad (123) de discriminacion elimina las características de los componentes de ruido de los canales multiples. Basándose en los resultados de la discriminacion, se lleva a cabo la conmutacion selectiva entre una salida de la primera unidad (124) de codificacion y una salida de la segunda unidad (125) de codificacion. Si los componentes de ruido de los canales multiples se codifican en comun, la relacion de compresion para los componentes de ruido de los canales multiples se puede mejorar. Por otra parte, si los componentes de ruido de los canales multiples no se codifican en comun se consideran perjudiciales debido al manejo en comun.
MX9600574A 1994-06-13 1995-06-12 Metodo y aparato de codificacion de señales, metodo y aparato de descodificacion de señales, y aparato de transmision de señales. MX9600574A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP13069594 1994-06-13
PCT/JP1995/001172 WO1995034956A1 (fr) 1994-06-13 1995-06-12 Procede et dispositif de codage de signal, procede et dispositif de decodage de signal, support d'enregistrement et dispositif de transmission de signaux

Publications (1)

Publication Number Publication Date
MX9600574A true MX9600574A (es) 1997-04-30

Family

ID=15040418

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9600574A MX9600574A (es) 1994-06-13 1995-06-12 Metodo y aparato de codificacion de señales, metodo y aparato de descodificacion de señales, y aparato de transmision de señales.

Country Status (14)

Country Link
US (1) US6061649A (es)
EP (1) EP0714173B1 (es)
JP (1) JP3428024B2 (es)
KR (1) KR100419546B1 (es)
CN (1) CN1101087C (es)
AT (1) ATE293276T1 (es)
BR (1) BR9506263A (es)
CA (1) CA2169366A1 (es)
DE (1) DE69534140T2 (es)
ES (1) ES2236708T3 (es)
MX (1) MX9600574A (es)
PL (1) PL184295B1 (es)
TW (1) TW295747B (es)
WO (1) WO1995034956A1 (es)

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Also Published As

Publication number Publication date
CN1130961A (zh) 1996-09-11
KR100419546B1 (ko) 2004-05-27
PL312947A1 (en) 1996-05-27
DE69534140T2 (de) 2006-02-16
WO1995034956A1 (fr) 1995-12-21
ES2236708T3 (es) 2005-07-16
TW295747B (es) 1997-01-11
US6061649A (en) 2000-05-09
EP0714173A4 (en) 2002-05-02
PL184295B1 (pl) 2002-09-30
BR9506263A (pt) 1997-08-12
ATE293276T1 (de) 2005-04-15
DE69534140D1 (de) 2005-05-19
JP3428024B2 (ja) 2003-07-22
EP0714173B1 (en) 2005-04-13
CA2169366A1 (en) 1995-12-21
CN1101087C (zh) 2003-02-05
EP0714173A1 (en) 1996-05-29

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