FR2039429A1 - - Google Patents

Info

Publication number
FR2039429A1
FR2039429A1 FR7014568A FR7014568A FR2039429A1 FR 2039429 A1 FR2039429 A1 FR 2039429A1 FR 7014568 A FR7014568 A FR 7014568A FR 7014568 A FR7014568 A FR 7014568A FR 2039429 A1 FR2039429 A1 FR 2039429A1
Authority
FR
France
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Withdrawn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
FR7014568A
Other languages
French (fr)
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
Priority claimed from DE19691921018 external-priority patent/DE1921018B1/en
Priority claimed from DE19691921023 external-priority patent/DE1921023B2/en
Priority claimed from DE19691920961 external-priority patent/DE1920961B2/en
Priority claimed from DE19691920962 external-priority patent/DE1920962B1/en
Application filed by Siemens AG filed Critical Siemens AG
Publication of FR2039429A1 publication Critical patent/FR2039429A1/fr
Withdrawn legal-status Critical Current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
    • H04B3/21—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a set of bandfilters

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
FR7014568A 1969-04-24 1970-04-22 Withdrawn FR2039429A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19691921018 DE1921018B1 (en) 1969-04-24 1969-04-24 Echo suppressor for a speech circuit on a four-wire transmission system
DE19691921023 DE1921023B2 (en) 1969-04-24 1969-04-24 FREQUENCY SELECTIVELY CONTROLLED ECHO LOCK
DE19691920961 DE1920961B2 (en) 1969-04-24 1969-04-24 Selective echo suppressor for a speech circuit on a four-wire transmission system
DE19691920962 DE1920962B1 (en) 1969-04-24 1969-04-24 Echo suppressor with two filter sets consisting of bandpasses working in parallel for a speech circuit on a four-wire transmission system

Publications (1)

Publication Number Publication Date
FR2039429A1 true FR2039429A1 (en) 1971-01-15

Family

ID=27430890

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7014568A Withdrawn FR2039429A1 (en) 1969-04-24 1970-04-22

Country Status (4)

Country Link
JP (1) JPS5117849B1 (en)
FR (1) FR2039429A1 (en)
GB (1) GB1269864A (en)
NL (1) NL7005280A (en)

Also Published As

Publication number Publication date
GB1269864A (en) 1972-04-06
NL7005280A (en) 1970-10-27
JPS5117849B1 (en) 1976-06-05

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Legal Events

Date Code Title Description
ST Notification of lapse