FR2282192A1 - Systeme de transmission numerique pour la transmission a frequence d'impulsions basse de signaux de conversation et emetteur a utiliser dans un tel systeme - Google Patents

Systeme de transmission numerique pour la transmission a frequence d'impulsions basse de signaux de conversation et emetteur a utiliser dans un tel systeme

Info

Publication number
FR2282192A1
FR2282192A1 FR7525041A FR7525041A FR2282192A1 FR 2282192 A1 FR2282192 A1 FR 2282192A1 FR 7525041 A FR7525041 A FR 7525041A FR 7525041 A FR7525041 A FR 7525041A FR 2282192 A1 FR2282192 A1 FR 2282192A1
Authority
FR
France
Prior art keywords
transmitter
pulse frequency
low pulse
transmission
conversation signals
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.)
Withdrawn
Application number
FR7525041A
Other languages
English (en)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of FR2282192A1 publication Critical patent/FR2282192A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
FR7525041A 1974-08-12 1975-08-12 Systeme de transmission numerique pour la transmission a frequence d'impulsions basse de signaux de conversation et emetteur a utiliser dans un tel systeme Withdrawn FR2282192A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7410763A NL7410763A (nl) 1974-08-12 1974-08-12 Digitaal transmissiestelsel voor het met een lage pulsfrequentie(bit-rate)overdragen van gespreks- signalen en een zender voor toepassing in zulk een stelsel.

Publications (1)

Publication Number Publication Date
FR2282192A1 true FR2282192A1 (fr) 1976-03-12

Family

ID=19821895

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7525041A Withdrawn FR2282192A1 (fr) 1974-08-12 1975-08-12 Systeme de transmission numerique pour la transmission a frequence d'impulsions basse de signaux de conversation et emetteur a utiliser dans un tel systeme

Country Status (11)

Country Link
US (1) US4047108A (fr)
JP (1) JPS5142408A (fr)
AU (1) AU8382575A (fr)
BE (1) BE832320A (fr)
CA (1) CA1032478A (fr)
DE (1) DE2534854A1 (fr)
DK (1) DK361075A (fr)
FR (1) FR2282192A1 (fr)
GB (1) GB1520264A (fr)
NL (1) NL7410763A (fr)
SE (1) SE402685B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987003128A1 (fr) * 1985-11-14 1987-05-21 Ncr Corporation Appareil et procedes de codage et decodage d'un signal analogique

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4384170A (en) * 1977-01-21 1983-05-17 Forrest S. Mozer Method and apparatus for speech synthesizing
US4121051A (en) * 1977-06-29 1978-10-17 International Telephone & Telegraph Corporation Speech synthesizer
FR2464601B1 (fr) * 1979-08-29 1986-10-24 Trt Telecom Radio Electr Systeme de radiodiffusion numerique de plusieurs signaux d'information par un reseau d'emetteurs utilisant sensiblement la meme frequence porteuse
US4545065A (en) * 1982-04-28 1985-10-01 Xsi General Partnership Extrema coding signal processing method and apparatus
US4672670A (en) * 1983-07-26 1987-06-09 Advanced Micro Devices, Inc. Apparatus and methods for coding, decoding, analyzing and synthesizing a signal
US4700362A (en) * 1983-10-07 1987-10-13 Dolby Laboratories Licensing Corporation A-D encoder and D-A decoder system
US4700361A (en) * 1983-10-07 1987-10-13 Dolby Laboratories Licensing Corporation Spectral emphasis and de-emphasis
DE3400674C1 (de) * 1984-01-11 1985-03-21 Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen Schaltung zur Versteilerung der Flanken eines Videosignals
US4700360A (en) * 1984-12-19 1987-10-13 Extrema Systems International Corporation Extrema coding digitizing signal processing method and apparatus
US4907217A (en) * 1988-09-12 1990-03-06 Amaf Industries, Inc. System and method of transmitting a complex waveform over a communication channel utilizing lincompex techniques
US5761633A (en) * 1994-08-30 1998-06-02 Samsung Electronics Co., Ltd. Method of encoding and decoding speech signals
EP1605439B1 (fr) * 2004-06-04 2007-06-27 Honda Research Institute Europe GmbH Traitement unifié des harmoniques résolus et non résolus
EP1605437B1 (fr) * 2004-06-04 2007-08-29 Honda Research Institute Europe GmbH Détection d'une source commune de deux composants harmoniques
DE602004008592T2 (de) * 2004-06-04 2007-12-27 Honda Research Institute Europe Gmbh Bestimmung einer gemeinsamen Quelle zweier harmonischer Komponenten
EP1686561B1 (fr) * 2005-01-28 2012-01-04 Honda Research Institute Europe GmbH Détermination d'une fréquence fondamentale commune de signaux harmoniques
US20220375490A1 (en) * 2021-05-19 2022-11-24 Cirrus Logic International Semiconductor Ltd. Natural speech detection

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2724740A (en) * 1950-06-29 1955-11-22 Bell Telephone Labor Inc Quantized transmission with variable quanta
US3521044A (en) * 1968-01-31 1970-07-21 Us Navy Time-compression analog correlator (timac)
JPS5114846B1 (fr) * 1968-08-08 1976-05-12
US3750024A (en) * 1971-06-16 1973-07-31 Itt Corp Nutley Narrow band digital speech communication system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987003128A1 (fr) * 1985-11-14 1987-05-21 Ncr Corporation Appareil et procedes de codage et decodage d'un signal analogique

Also Published As

Publication number Publication date
AU8382575A (en) 1977-02-17
DK361075A (da) 1976-02-13
CA1032478A (fr) 1978-06-06
BE832320A (fr) 1976-02-11
DE2534854A1 (de) 1976-03-04
US4047108A (en) 1977-09-06
SE402685B (sv) 1978-07-10
NL7410763A (nl) 1976-02-16
JPS5142408A (fr) 1976-04-10
GB1520264A (en) 1978-08-02
SE7508933L (sv) 1976-02-13

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Legal Events

Date Code Title Description
ST Notification of lapse