WO1993009645A1 - Procede de transmission simultanee de signaux en provenance de n sources de signaux - Google Patents

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

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Publication number
WO1993009645A1
WO1993009645A1 PCT/DE1992/000905 DE9200905W WO9309645A1 WO 1993009645 A1 WO1993009645 A1 WO 1993009645A1 DE 9200905 W DE9200905 W DE 9200905W WO 9309645 A1 WO9309645 A1 WO 9309645A1
Authority
WO
WIPO (PCT)
Prior art keywords
transmission capacity
signals
available
individual
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.)
Ceased
Application number
PCT/DE1992/000905
Other languages
German (de)
English (en)
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 Foerderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
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
Priority to DE59209456T priority Critical patent/DE59209456D1/de
Priority to EP92921746A priority patent/EP0610282B1/fr
Priority to DK92921746T priority patent/DK0610282T3/da
Priority to US08/232,094 priority patent/US5509017A/en
Priority to RU94028106A priority patent/RU2108001C1/ru
Priority to CA002122577A priority patent/CA2122577C/fr
Priority to JP50808893A priority patent/JP3276370B2/ja
Priority to KR1019940701410A priority patent/KR100268517B1/ko
Application filed by Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Priority to AU28069/92A priority patent/AU666339B2/en
Publication of WO1993009645A1 publication Critical patent/WO1993009645A1/fr
Priority to FI942000A priority patent/FI113936B/fi
Priority to NO19941595A priority patent/NO316098B1/no
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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 the simultaneous transmission of signals from N signal sources via a corresponding number of transmission channels.
  • each individual transmission channel is dimensioned in such a way that it can transmit the “maximum bit stream”, comparatively much transmission capacity remains “unused” on average.
  • the invention is based on the object of specifying a method for the simultaneous transmission of signals from N signal sources via a corresponding number of transmission channels, with which "data-reduced signals" are transmitted via transmission channels which are only dimensioned for an "average need", without perceptible signals , ie for example, audible losses in signal capacity can be transmitted.
  • the invention is based on the basic idea that, in order to compensate for the fluctuating demand for the simultaneous transmission of signals from N signal sources via a corresponding number of transmission channels, the allocation to the individual signals is not carried out according to statistical criteria, but already in the method step in which the signals for data reduction are encoded to compensate for the fluctuating demand by means of appropriate measures.
  • the individual signals are divided into blocks and the blocks are converted into spectral coefficients by means of transformation or filtering.
  • the blocks belonging to the individual signals are divided into sections, and the respective current sections of all signals are processed together. This is shown graphically in FIG. 1 by corresponding "function blocks".
  • the permitted interference is determined for each section and the requirement for the currently required total transmission capacity is calculated from this.
  • the calculation of the total transmission capacity ie the necessary number of bits, is carried out simultaneously for all blocks.
  • the allocation of the maximum available transmission capacity for each individual signal is calculated from the total available transmission capacity and the currently required total transmission capacity.
  • the "bit number" allocated for each individual signal is used to encode the individual signal and, accordingly, to transmit this individual signal.
  • the transmission capacity required is only balanced between the channels.
  • there is a reserve of transmission capacity a so-called bit reservoir, from which, in the event that the total transmission capacity required exceeds the transmission capacity available on average, an allocation of transmission capacity follows.
  • This bit reservoir is always filled when the requested transmission capacity is smaller than the available transmission capacity (claim 3).
  • bits are forcibly allocated to the individual channels (Claim 4).
  • This compulsory allocation is preferably carried out only to the channels or signal sources that have registered a requirement that is greater than an average requirement.
  • a requirement that is substantially greater than the average requirement means that these signals are much more difficult to encode than conventional signals.
  • an overall block is formed from all separately coded signals of the signal sources, which consists of a fixed area, which contains information from which the separation of the signals can be determined, and of several areas of flexible length that picks up the encoded signals.
  • Fig. 2a A further saving in transmission capacity is obtained by recognizing the same input signals and transmitting them only once using a suitable transmission format (claim 6). This is shown schematically in Fig. 2b.
  • the audio signal y is broken down into samples (y (t) which are digitized in a manner known per se.
  • the digitized samples are broken down into blocks of length 2n which, in the selected embodiment, overlap blocks with overlap n are:
  • Each block of length n is transformed into spectral coefficients by a transformation, for example a Fast Fourier transformation or a cosine transformation:
  • the permitted disturbance is calculated using a suitable psycho-acoustic model, with reference to which reference is made to the literature.
  • the masking between the tapes results from the earth-deficient disturbance
  • ss (i, b) max (s (i, b-l (/ 16, s (i, b))
  • pO 345 for PCM (scale factors: 10 bits / section
  • bit numbers are then assigned to the individual signals. For this purpose, it is assumed that k (k) bits are required for coding the K input signals, while the number of bits available is Psoii.
  • the number of bits available for quantization in each section is increased by / z-p) / 512.
  • the number of bits available for the quantization in each section is increased by (zp) / 512.
  • PCM rounding bits per ATW to an integer is necessary: For this purpose, all bits / ATW are first rounded down to the next lower integer and the resulting bit total is determined.
  • bit / ATW starting from the lowest bands is made available in a first pass 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)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Stereophonic System (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Selon un procédé de transmission simultanée de signaux en provenance de N sources de signaux par un nombre correspondant de canaux de transmission, les signaux individuels sont subdivisés en blocs et les blocs sont convertis par transformation ou par filtrage en coefficients spectraux que l'on soumet à un procédé de réduction de données. L'invention se caractérise par le fait que les blocs appartenant aux signaux individuels sont subdivisés en sections; les sections actuelles de tous les signaux sont traitées en même temps, la perturbation admissible de chaque section est déterminée au moyen d'un modèle spécifique de perception et la capacité totale de transmission requise à chaque instant est calculée. L'attribution de la capacité maximale de transmission disponible pour chaque signal individuel est calculée à partir de la capacité disponible totale de transmission et de la capacité totale de transmission requise à chaque instant, puis chaque signal individuel est codé et transmis avec la capacité ainsi déterminée.
PCT/DE1992/000905 1991-10-31 1992-10-28 Procede de transmission simultanee de signaux en provenance de n sources de signaux Ceased WO1993009645A1 (fr)

Priority Applications (11)

Application Number Priority Date Filing Date Title
JP50808893A JP3276370B2 (ja) 1991-10-31 1992-10-28 Ｎ個の信号源からの信号の同時伝送方法
DK92921746T DK0610282T3 (da) 1991-10-31 1992-10-28 Fremgangsmåde til samtidig overføring af lydsignaler fra N-signalkilder
US08/232,094 US5509017A (en) 1991-10-31 1992-10-28 Process for simultaneous transmission of signals from N signal sources
RU94028106A RU2108001C1 (ru) 1991-10-31 1992-10-28 Способ одновременной передачи сигналов от n источников сигналов
CA002122577A CA2122577C (fr) 1991-10-31 1992-10-28 Methode de transmission simultanee de signaux provenant de n sources
DE59209456T DE59209456D1 (de) 1991-10-31 1992-10-28 Verfahren zur gleichzeitigen übertragung von audio-signalen aus n-signalquellen
EP92921746A EP0610282B1 (fr) 1991-10-31 1992-10-28 Procede de transmission simultanee de signaux audio en provenance de n sources de signaux
KR1019940701410A KR100268517B1 (ko) 1991-10-31 1992-10-28 N개의 신호소스에서 나온 신호들을 동시에 전송하는 방법
AU28069/92A AU666339B2 (en) 1991-10-31 1992-10-28 Process for simultaneously transmitting signals from N-signal sources
FI942000A FI113936B (fi) 1991-10-31 1994-04-29 Menetelmä signaalien simultaaniseksi siirtämiseksi N signaalilähteestä
NO19941595A NO316098B1 (no) 1991-10-31 1994-04-29 Fremgangsmåte for samtidig overföring av lydsignaler fra N signalkilder

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4135977.1 1991-10-31
DE4135977A DE4135977C2 (de) 1991-10-31 1991-10-31 Verfahren zur gleichzeitigen Übertragung von Signalen aus N-Signalquellen

Publications (1)

Publication Number Publication Date
WO1993009645A1 true WO1993009645A1 (fr) 1993-05-13

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ID=6443876

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Application Number Title Priority Date Filing Date
PCT/DE1992/000905 Ceased WO1993009645A1 (fr) 1991-10-31 1992-10-28 Procede de transmission simultanee de signaux 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)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0650262A3 (fr) * 1993-10-26 1996-04-10 Sony Corp Codage perceptuel de signaux audio à canaux multiples avec allocation adaptive de bits.
US5641529A (en) * 1995-03-15 1997-06-24 The Quaker Oats Company Extrusion apparatus and method for producing three-dimensional shapes
AU689134B2 (en) * 1993-10-26 1998-03-26 Sony Corporation Low bit rate encoder, low bit rate encoding method, low bit rates decoder, low bit rate decoding method for digital audio signals, and recording media on which signals coded by such encoder or encoding method are recorded
US5825310A (en) * 1996-01-30 1998-10-20 Sony Corporation Signal encoding method
EP0711077A3 (fr) * 1994-11-01 1999-04-14 AT&T Corp. Adaptation du débit de transmission vidéo pour systèmes de communication multimédia

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19727938B4 (de) * 1997-07-01 2006-12-14 Mayah Communications Gmbh Verfahren und Vorrichtung zum Codieren von Signalen
CN1930914B (zh) * 2004-03-04 2012-06-27 艾格瑞系统有限公司 对多声道音频信号进行编码和合成的方法和装置
KR102291633B1 (ko) 2018-10-15 2021-08-20 에코플러스 주식회사 증기양생 콘크리트용 혼합재 조성물 및 이를 포함하는 증기양생 콘크리트 조성물

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0327101A2 (fr) * 1988-02-05 1989-08-09 Nec Corporation Système de communication par satellite à vitesse de codage variable
EP0479432A2 (fr) * 1990-09-10 1992-04-08 AT&T Corp. Méthode et dispositif pour l'allocation dynamique de bande passante de canal parmi une pluralité de codeurs vidéo en parallèle

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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
DE3817864A1 (de) * 1988-05-26 1989-12-07 Telefunken Fernseh & Rundfunk Verfahren zur uebertragung eines audiosignals

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0327101A2 (fr) * 1988-02-05 1989-08-09 Nec Corporation Système de communication par satellite à vitesse de codage variable
EP0479432A2 (fr) * 1990-09-10 1992-04-08 AT&T Corp. Méthode et dispositif pour l'allocation dynamique de bande passante de canal parmi une pluralité de codeurs vidéo en parallèle

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
ICASSP 91; Toronto, Ont., Canada, 14. Mai 1991, Band 5, Seiten 3601-3604, R.G. VAN DER WAAL et al. : "Subband Coding of Stereophonic Digital Audio Signals " *
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY Bd. 1, Nr. 2, Juni 1991, NEW YORK US Seiten 210 - 221 HSUEH-MING HANG ET AL. 'Digital HDTV Compression Using Parallel Motion-Compensated Transform Coders' *
IEEE TRANSACTIONS ON COMMUNICATIONS Bd. 33, Nr. 10, Oktober 1985, NEW YORK US Seiten 1100 - 1108 KUEI YUNG KOU ET AL. 'Digital Speech Interpolation for Variable Rate Coders with Application to Subband Coding' *
REVIEW OF THE ELECTRICAL COMMUNICATION LABORATORIES Bd. 36, Nr. 1, Januar 1988, TOKYO JP Seiten 49 - 55 M. TAKA ET AL. 'Low-Bit-Rate Speech Codecs and Wideband Speech Codecs' *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0650262A3 (fr) * 1993-10-26 1996-04-10 Sony Corp Codage perceptuel de signaux audio à canaux multiples avec allocation adaptive de bits.
AU689134B2 (en) * 1993-10-26 1998-03-26 Sony Corporation Low bit rate encoder, low bit rate encoding method, low bit rates decoder, low bit rate decoding method for digital audio signals, and recording media on which signals coded by such encoder or encoding method are recorded
CN1090846C (zh) * 1993-10-26 2002-09-11 索尼公司 数字声频信号低比特率编译码器和编译码方法及其编码记录媒体
EP0711077A3 (fr) * 1994-11-01 1999-04-14 AT&T Corp. Adaptation du débit de transmission vidéo pour systèmes de communication multimédia
US5641529A (en) * 1995-03-15 1997-06-24 The Quaker Oats Company Extrusion apparatus and method for producing three-dimensional shapes
US5825310A (en) * 1996-01-30 1998-10-20 Sony Corporation Signal encoding method

Also Published As

Publication number Publication date
AU2806992A (en) 1993-06-07
NO941595D0 (fr) 1994-04-29
EP0610282A1 (fr) 1994-08-17
DE4135977C2 (de) 1996-07-18
FI113936B (fi) 2004-06-30
KR100268517B1 (ko) 2000-10-16
NO316098B1 (no) 2003-12-08
JPH07504539A (ja) 1995-05-18
DE59209456D1 (de) 1998-09-17
NO941595L (no) 1994-04-29
ES2121868T3 (es) 1998-12-16
FI942000A0 (fi) 1994-04-29
RU2108001C1 (ru) 1998-03-27
DE4135977A1 (de) 1993-05-06
AU666339B2 (en) 1996-02-08
JP3276370B2 (ja) 2002-04-22
FI942000A7 (fi) 1994-04-29
CA2122577A1 (fr) 1993-05-13
EP0610282B1 (fr) 1998-08-12
ATE169791T1 (de) 1998-08-15
DK0610282T3 (da) 1999-05-10
CA2122577C (fr) 2000-12-26

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