ES2176947T3 - Compresion de audio. - Google Patents

Compresion de audio.

Info

Publication number
ES2176947T3
ES2176947T3 ES98901385T ES98901385T ES2176947T3 ES 2176947 T3 ES2176947 T3 ES 2176947T3 ES 98901385 T ES98901385 T ES 98901385T ES 98901385 T ES98901385 T ES 98901385T ES 2176947 T3 ES2176947 T3 ES 2176947T3
Authority
ES
Spain
Prior art keywords
signal
auxiliary data
decodification
recodification
processes
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
ES98901385T
Other languages
English (en)
Inventor
Nicholas Dominic Wells
Andrew James Mason
John Andrew Fletcher
Andrew Kevin Mcparland
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.)
British Broadcasting Corp
Original Assignee
British Broadcasting 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 British Broadcasting Corp filed Critical British Broadcasting Corp
Application granted granted Critical
Publication of ES2176947T3 publication Critical patent/ES2176947T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • G10L19/04—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
    • G10L19/173—Transcoding, i.e. converting between two coded representations avoiding cascaded coding-decoding
    • 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
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/02—Arrangements for generating broadcast information; Arrangements for generating broadcast-related information with a direct linking to broadcast information or to broadcast space-time; Arrangements for simultaneous generation of broadcast information and broadcast-related information
    • H04H60/04—Studio equipment; Interconnection of studios

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

SE DERIVA UNA SEÑAL AUXILIAR DE DATOS A PARTIR DE UNA SEÑAL DE COMPRESION DE AUDIO CODIFICADA RECIBIDA DURANTE LA DESCODIFICACION DE LA SEÑAL Y SE COMUNICA CON LA SEÑAL DE AUDIO DESCODIFICADA PARA SU USO EN LA RECODIFICACION DE LA SEÑAL. LA SEÑAL AUXILIAR DE DATOS SE PUEDE COMUNICAR INTEGRAMENTE CON LA SEÑAL DE AUDIO, POR EJEMPLO, EN LOS BITS MENOS SIGNIFICATIVOS O PUEDE SEGUIR UNA TRAYECTORIA DISTINTA. LA PROVISION DE LA SEÑAL DE DATOS AUXILIARES PUEDE PERMITIR PROCESOS DE DESCODIFICACION Y RECODIFICACION MAS TRANSPARENTES PERMITIENDO QUE LA DECISION DE CODIFICAR COINCIDA CON LAS DECISIONES DE CODIFICAR EMPLEADAS ORIGINARIAMENTE. ESTO PUEDE ALIVIAR LOS PROBLEMAS SOBRE LA REDUCCION DE LA CALIDAD QUE SURGEN DE LOS PROCESOS DE DESCODIFICACION Y RECODIFICIACION EN CASCADA.
ES98901385T 1997-01-27 1998-01-27 Compresion de audio. Expired - Lifetime ES2176947T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9701616A GB2321577B (en) 1997-01-27 1997-01-27 Audio compression

Publications (1)

Publication Number Publication Date
ES2176947T3 true ES2176947T3 (es) 2002-12-01

Family

ID=10806629

Family Applications (1)

Application Number Title Priority Date Filing Date
ES98901385T Expired - Lifetime ES2176947T3 (es) 1997-01-27 1998-01-27 Compresion de audio.

Country Status (8)

Country Link
EP (1) EP0958664B1 (es)
JP (1) JP2001508968A (es)
AU (1) AU740334B2 (es)
CA (1) CA2278576A1 (es)
DE (1) DE69806227T2 (es)
ES (1) ES2176947T3 (es)
GB (1) GB2321577B (es)
WO (1) WO1998033284A2 (es)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2340351B (en) * 1998-07-29 2004-06-09 British Broadcasting Corp Data transmission
GB2344728B (en) * 1998-09-23 2004-03-17 British Broadcasting Corp Audio compression
JP4639441B2 (ja) * 1999-09-01 2011-02-23 ソニー株式会社 ディジタル信号処理装置および処理方法、並びにディジタル信号記録装置および記録方法
FR2802329B1 (fr) * 1999-12-08 2003-03-28 France Telecom Procede de traitement d'au moins un flux binaire audio code organise sous la forme de trames
GB0003954D0 (en) * 2000-02-18 2000-04-12 Radioscape Ltd Method of and apparatus for converting a signal between data compression formats
JP3487250B2 (ja) * 2000-02-28 2004-01-13 日本電気株式会社 符号化音声信号形式変換装置
JP2002014697A (ja) * 2000-06-30 2002-01-18 Hitachi Ltd ディジタルオーディオ装置
JP3580251B2 (ja) 2000-12-27 2004-10-20 日本電気株式会社 データ圧縮装置及び圧縮方法並びにその制御プログラムを記録した記録媒体
US20070061577A1 (en) * 2003-10-17 2007-03-15 Van De Kerkhof Leon M Signal encoding
JP5895050B2 (ja) 2011-06-24 2016-03-30 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． 符号化された多チャンネルオーディオ信号を処理するオーディオ信号プロセッサ及びその方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2653280B1 (fr) * 1989-10-13 1992-01-10 France Etat Dispositif d'allocation de bits pour signal audio-numerique transforme, a quantification adaptative sur critere psycho-auditif.
US5185800A (en) * 1989-10-13 1993-02-09 Centre National D'etudes Des Telecommunications Bit allocation device for transformed digital audio broadcasting signals with adaptive quantization based on psychoauditive criterion
DE69427212T2 (de) * 1993-07-30 2001-11-15 Texas Instruments Inc., Dallas Modulare Audiodaten-Verarbeitungsarchitektur
US5451954A (en) * 1993-08-04 1995-09-19 Dolby Laboratories Licensing Corporation Quantization noise suppression for encoder/decoder system
US5570363A (en) * 1994-09-30 1996-10-29 Intel Corporation Transform based scalable audio compression algorithms and low cost audio multi-point conferencing systems

Also Published As

Publication number Publication date
GB2321577B (en) 2001-08-01
WO1998033284A2 (en) 1998-07-30
DE69806227T2 (de) 2003-02-27
WO1998033284A3 (en) 1999-01-14
EP0958664A2 (en) 1999-11-24
AU740334B2 (en) 2001-11-01
DE69806227D1 (de) 2002-08-01
AU5772398A (en) 1998-08-18
GB9701616D0 (en) 1997-03-19
CA2278576A1 (en) 1998-07-30
EP0958664B1 (en) 2002-06-26
GB2321577A (en) 1998-07-29
JP2001508968A (ja) 2001-07-03

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