EP0610282B1 - Procede de transmission simultanee de signaux audio en provenance de n sources de signaux - Google Patents

Procede de transmission simultanee de signaux audio en provenance de n sources de signaux Download PDF

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Publication number
EP0610282B1
EP0610282B1 EP92921746A EP92921746A EP0610282B1 EP 0610282 B1 EP0610282 B1 EP 0610282B1 EP 92921746 A EP92921746 A EP 92921746A EP 92921746 A EP92921746 A EP 92921746A EP 0610282 B1 EP0610282 B1 EP 0610282B1
Authority
EP
European Patent Office
Prior art keywords
signals
process according
transmitting capacity
capacity
signal
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
EP92921746A
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German (de)
English (en)
Other versions
EP0610282A1 (fr
Inventor
Karl-Heinz Brandenburg
Heinz GERHÄUSEN
Dieter Seitzer
Thomas Sporer
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 Forderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
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Application filed by Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Publication of EP0610282A1 publication Critical patent/EP0610282A1/fr
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S1/00—Two-channel systems

Definitions

  • the invention relates to a method for simultaneous Transmission of audio signals from N signal sources via a corresponding number of transmission channels in which the individual Signals divided into blocks and the blocks by one Transformation or filtering implemented in spectral coefficients which are subjected to a data reduction process, and the total available transmission capacity and the currently required total transmission capacity the allocation to maximum available standing transmission capacity for each individual signal calculated and each individual signal determined with this Capacity is encoded and transmitted.
  • the invention has for its object a method for the simultaneous transmission of audio signals from N signal sources over a corresponding number of transmission channels specify with which "data-reduced Signals "via transmission channels that are only for an "average need” are dimensioned without perceptible, i.e. for example, audible losses Signal capacity can be transmitted.
  • the invention is based on the basic idea of Compensate for fluctuating needs at the same time Transmission of audio signals from N signal sources via a corresponding number of transmission channels Allocation to the individual signals not according to statistical Aspects, but already in the process step in which the signals for data reduction are encoded, the fluctuating demand to compensate for corresponding measures.
  • a perception-specific model for example when transferring Audio signals can be a psycho-acoustic model the permitted fault is determined for each section and from this the requirement for currently required Total transmission capacity calculated.
  • the calculation the total transmission capacity i.e. the necessary Number of bits, occurs for all blocks at the same time. From the total available transmission capacity and the currently required total transmission capacity the allocation to the maximum available transmission capacity calculated for each individual signal. With the "number of bits" allocated for each individual signal the individual signal is encoded and accordingly the transmission of this single signal.
  • each is balanced required transmission capacity only between the Channels.
  • a reserve of transmission capacity a so-called Bit reservoir available from which in the event that the total transmission capacity required on average available transmission capacity exceeds an allocation of transmission capacity is made.
  • This bit reservoir is always filled up when the requested transmission capacity is less than that available transmission capacity is (Claim 3).
  • the first Pass each from the lowest bands Tape one bit / ATW provided until the available number of bits is reached.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Stereophonic System (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Stereo-Broadcasting Methods (AREA)

Claims (11)

  1. Procédé pour la transmission simultanée de signaux audio provenant de N sources de signaux, par l'intermédiaire d'un nombre correspondant de canaux de transmission,
    selon lequel les différents signaux sont subdivisés en blocs et les blocs sont convertis, au moyen d'une transformation ou d'un filtrage, en des coefficients spectraux, qui sont soumis à un procédé de réduction de données, et
    selon lequel l'affectation d'une capacité de transmission maximale disponible pour chaque signal individuel est calculée à partir de la capacité de transmission globale disponible et de la capacité global disponible actuellement requise, et chaque signal individuel est codé avec cette capacité ainsi déterminée et est transmis,
    caractérisé par les caractéristiques suivantes :
    les blocs appartenant aux différents signaux individuels sont subdivisés en sections,
    les sections actuelles respectives de tous les signaux sont traitées en commun,
    le parasitage autorisé pour chaque section est déterminé moyennant l'utilisation d'un modèle spécifique du point de vue perception et une demande d'une capacité de transmission totale actuellement requise est calculée.
  2. Procédé selon la revendication 1, caractérisé en ce qu'il est prévu une réserve de capacité de transmission (réservoir de bits), à partir de laquelle une affectation est exécutée dans le cas où la capacité de transmission globale nécessaire dépasse la capacité de transmission qui est disponible en moyenne.
  3. Procédé selon la revendication 2, caractérisé en ce qu'un remplissage du réservoir de bits est exécuté lorsque la capacité de transmission demandée est inférieure à la capacité de transmission disponible.
  4. Procédé selon la revendication 3, caractérisé en ce que - pour empêcher une augmentation trop importante du réservoir de bits - une affectation forcée de bits est exécutée dans le cas où la capacité de transmission demandée est beaucoup plus petite que la capacité de transmission disponible.
  5. Procédé selon la revendication 4, caractérisé en ce que l'affectation forcée est exécutée uniquement dans le cas d'un besoin qui est supérieur à un besoin moyen.
  6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce que des signaux d'entrée identiques sont identifiés et sont transmis une seule fois au moyen d'un format de transmission approprié.
  7. Procédé selon l'une des revendications 1 à 6, caractérisé en ce que la détermination de la capacité de transmission actuellement nécessaire est exécutée de façon précise.
  8. Procédé selon l'une des revendications 1 à 7, caractérisé en ce que la détermination de la capacité de transmission actuellement nécessaire est seulement estimée.
  9. Procédé selon l'une des revendications 1 à 8, caractérisé en ce qu'à partir de tous les signaux, codés séparément, des sources de signaux est formé un bloc complet, qui se compose d'une zone fixe, qui contient une information, à partir de laquelle la séparation des signaux individuels peut être déterminée, et de plusieurs zones de longueur variable.
  10. Procédé selon l'une des revendications 1 à 9, caractérisé en ce que le codage des signaux individuels s'effectue déjà pendant le calcul de l'affectation de la capacité de transmission pour chaque signal.
  11. Procédé selon l'une des revendications 1 à 10, caractérisé en ce que dans le cas où le nombre de bits demandé dépasse le nombre de bits globalement disponible, le parasitage autorisé pour toutes les sources de signaux est accru de telle sorte qu'on obtient une demande réduite en bits.
EP92921746A 1991-10-31 1992-10-28 Procede de transmission simultanee de signaux audio en provenance de n sources de signaux Expired - Lifetime EP0610282B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4135977A DE4135977C2 (de) 1991-10-31 1991-10-31 Verfahren zur gleichzeitigen Übertragung von Signalen aus N-Signalquellen
DE4135977 1991-10-31
PCT/DE1992/000905 WO1993009645A1 (fr) 1991-10-31 1992-10-28 Procede de transmission simultanee de signaux en provenance de n sources de signaux

Publications (2)

Publication Number Publication Date
EP0610282A1 EP0610282A1 (fr) 1994-08-17
EP0610282B1 true EP0610282B1 (fr) 1998-08-12

Family

ID=6443876

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92921746A Expired - Lifetime EP0610282B1 (fr) 1991-10-31 1992-10-28 Procede de transmission simultanee de signaux audio en provenance de n sources de signaux

Country Status (13)

Country Link
EP (1) EP0610282B1 (fr)
JP (1) JP3276370B2 (fr)
KR (1) KR100268517B1 (fr)
AT (1) ATE169791T1 (fr)
AU (1) AU666339B2 (fr)
CA (1) CA2122577C (fr)
DE (2) DE4135977C2 (fr)
DK (1) DK0610282T3 (fr)
ES (1) ES2121868T3 (fr)
FI (1) FI113936B (fr)
NO (1) NO316098B1 (fr)
RU (1) RU2108001C1 (fr)
WO (1) WO1993009645A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5737720A (en) * 1993-10-26 1998-04-07 Sony Corporation Low bit rate multichannel audio coding methods and apparatus using non-linear adaptive bit allocation
JP3528260B2 (ja) * 1993-10-26 2004-05-17 ソニー株式会社 符号化装置及び方法、並びに復号化装置及び方法
US5687095A (en) * 1994-11-01 1997-11-11 Lucent Technologies Inc. Video transmission rate matching for multimedia communication systems
US5641529A (en) * 1995-03-15 1997-06-24 The Quaker Oats Company Extrusion apparatus and method for producing three-dimensional shapes
JP3521596B2 (ja) * 1996-01-30 2004-04-19 ソニー株式会社 信号符号化方法
DE19727938B4 (de) * 1997-07-01 2006-12-14 Mayah Communications Gmbh Verfahren und Vorrichtung zum Codieren von Signalen
KR102291633B1 (ko) 2018-10-15 2021-08-20 에코플러스 주식회사 증기양생 콘크리트용 혼합재 조성물 및 이를 포함하는 증기양생 콘크리트 조성물

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH589390A5 (fr) * 1975-08-19 1977-06-30 Patelhold Patentverwertung
DE3440613C1 (de) * 1984-11-07 1986-04-10 Institut für Rundfunktechnik GmbH, 8000 München Verfahren zum digitalen Übertragen eines Rundfunk-Programmsignals
DE3629434C2 (de) * 1986-08-29 1994-07-28 Karlheinz Dipl Ing Brandenburg Digitales Codierverfahren
JPH0648796B2 (ja) * 1988-02-05 1994-06-22 日本電気株式会社 デマンドアサイン方式衛星通信装置
DE3817864A1 (de) * 1988-05-26 1989-12-07 Telefunken Fernseh & Rundfunk Verfahren zur uebertragung eines audiosignals
US5115309A (en) * 1990-09-10 1992-05-19 At&T Bell Laboratories Method and apparatus for dynamic channel bandwidth allocation among multiple parallel video coders

Also Published As

Publication number Publication date
DE59209456D1 (de) 1998-09-17
AU666339B2 (en) 1996-02-08
RU2108001C1 (ru) 1998-03-27
NO941595D0 (fr) 1994-04-29
CA2122577A1 (fr) 1993-05-13
DE4135977A1 (de) 1993-05-06
CA2122577C (fr) 2000-12-26
AU2806992A (en) 1993-06-07
NO316098B1 (no) 2003-12-08
FI942000A0 (fi) 1994-04-29
EP0610282A1 (fr) 1994-08-17
KR100268517B1 (ko) 2000-10-16
FI942000A (fi) 1994-04-29
DK0610282T3 (da) 1999-05-10
JPH07504539A (ja) 1995-05-18
NO941595L (no) 1994-04-29
FI113936B (fi) 2004-06-30
ATE169791T1 (de) 1998-08-15
ES2121868T3 (es) 1998-12-16
DE4135977C2 (de) 1996-07-18
JP3276370B2 (ja) 2002-04-22
WO1993009645A1 (fr) 1993-05-13

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