AU517093B2 - Echo suppressor - Google Patents

Echo suppressor

Info

Publication number
AU517093B2
AU517093B2 AU47171/79A AU4717179A AU517093B2 AU 517093 B2 AU517093 B2 AU 517093B2 AU 47171/79 A AU47171/79 A AU 47171/79A AU 4717179 A AU4717179 A AU 4717179A AU 517093 B2 AU517093 B2 AU 517093B2
Authority
AU
Australia
Prior art keywords
path
tone
control circuit
control
echo suppressor
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
AU47171/79A
Other versions
AU4717179A (en
Inventor
Dirsko Von Pfeil
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 AG
Original Assignee
Siemens 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 AG filed Critical Siemens AG
Publication of AU4717179A publication Critical patent/AU4717179A/en
Application granted granted Critical
Publication of AU517093B2 publication Critical patent/AU517093B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Fats And Perfumes (AREA)
  • Lubricants (AREA)
  • Detergent Compositions (AREA)

Abstract

1. Echo suppressor comprising a comparator circuit (8) for the level-dependent control of the transmitting path and receiving path, and a control circuit which carries out the control, and a tone receiver (15, 17, 19) which is connected at the input end to the transmitting path and receiving path and at the output end to the control circuit, for blocking the control circuit, characterised in that the input of the tone receiver (15) is connected via a change-over switch (18), which is controlled in dependence upon the output of the comparator circuit (8), to the transmitting path when a tone voltage is present on the transmitting path and to the receiving path when a tone voltage is present on the receiving path.
AU47171/79A 1978-05-18 1979-05-17 Echo suppressor Ceased AU517093B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE28217438 1978-05-18
DE2821743A DE2821743C2 (en) 1978-05-18 1978-05-18 Echo lock

Publications (2)

Publication Number Publication Date
AU4717179A AU4717179A (en) 1979-11-22
AU517093B2 true AU517093B2 (en) 1981-07-09

Family

ID=6039651

Family Applications (1)

Application Number Title Priority Date Filing Date
AU47171/79A Ceased AU517093B2 (en) 1978-05-18 1979-05-17 Echo suppressor

Country Status (5)

Country Link
EP (1) EP0005759B1 (en)
AT (1) ATE34T1 (en)
AU (1) AU517093B2 (en)
DE (2) DE2821743C2 (en)
DK (1) DK204179A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3332006A1 (en) * 1983-09-05 1985-03-21 Hartmann & Braun Ag, 6000 Frankfurt Bidirectional regenerator for serial pulse sequences transmitted in blocks

Also Published As

Publication number Publication date
AU4717179A (en) 1979-11-22
DE2960232D1 (en) 1981-04-23
DE2821743B1 (en) 1979-11-08
EP0005759B1 (en) 1981-04-01
ATE34T1 (en) 1981-04-15
DE2821743C2 (en) 1980-07-17
DK204179A (en) 1979-11-19
EP0005759A1 (en) 1979-12-12

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