FR664530A - Montage pour la télégraphie infra-acoustique - Google Patents

Montage pour la télégraphie infra-acoustique

Info

Publication number
FR664530A
FR664530A FR664530DA FR664530A FR 664530 A FR664530 A FR 664530A FR 664530D A FR664530D A FR 664530DA FR 664530 A FR664530 A FR 664530A
Authority
FR
France
Prior art keywords
telegraphy
infra
acoustic
assembly
acoustic telegraphy
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
Application number
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.)
Siemens and Halske AG
Original Assignee
Siemens and Halske AG
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 Siemens and Halske AG filed Critical Siemens and Halske AG
Application granted granted Critical
Publication of FR664530A publication Critical patent/FR664530A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H04M11/062—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using different frequency bands for speech and other data

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Filters And Equalizers (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
FR664530D 1927-11-26 1928-11-24 Montage pour la télégraphie infra-acoustique Expired FR664530A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE301317X 1927-11-26

Publications (1)

Publication Number Publication Date
FR664530A true FR664530A (fr) 1929-09-04

Family

ID=6099315

Family Applications (1)

Application Number Title Priority Date Filing Date
FR664530D Expired FR664530A (fr) 1927-11-26 1928-11-24 Montage pour la télégraphie infra-acoustique

Country Status (2)

Country Link
FR (1) FR664530A (fr)
GB (1) GB301317A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2509250B1 (fr) 2011-04-08 2013-12-11 Alcatel Lucent Dispositif de combinaison pour signaux de mode fantôme DSL dans un système de télécommunication

Also Published As

Publication number Publication date
GB301317A (en) 1930-02-24

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