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DE1921023B2 - FREQUENCY SELECTIVELY CONTROLLED ECHO LOCK - Google Patents
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DE1921023B2 - FREQUENCY SELECTIVELY CONTROLLED ECHO LOCK - Google Patents

FREQUENCY SELECTIVELY CONTROLLED ECHO LOCK

Info

Publication number
DE1921023B2
DE1921023B2 DE19691921023 DE1921023A DE1921023B2 DE 1921023 B2 DE1921023 B2 DE 1921023B2 DE 19691921023 DE19691921023 DE 19691921023 DE 1921023 A DE1921023 A DE 1921023A DE 1921023 B2 DE1921023 B2 DE 1921023B2
Authority
DE
Germany
Prior art keywords
selectively controlled
frequency selectively
controlled echo
echo lock
lock
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Withdrawn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
DE19691921023
Other languages
German (de)
Other versions
DE1921023A1 (en
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 filed Critical
Priority to DE19691921023 priority Critical patent/DE1921023B2/en
Priority to NL7005280A priority patent/NL7005280A/xx
Priority to FR7014568A priority patent/FR2039429A1/fr
Priority to GB1944970A priority patent/GB1269864A/en
Priority to JP3533870A priority patent/JPS5117849B1/ja
Publication of DE1921023A1 publication Critical patent/DE1921023A1/en
Publication of DE1921023B2 publication Critical patent/DE1921023B2/en
Withdrawn legal-status Critical Current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)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
DE19691921023 1969-04-24 1969-04-24 FREQUENCY SELECTIVELY CONTROLLED ECHO LOCK Withdrawn DE1921023B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE19691921023 DE1921023B2 (en) 1969-04-24 1969-04-24 FREQUENCY SELECTIVELY CONTROLLED ECHO LOCK
NL7005280A NL7005280A (en) 1969-04-24 1970-04-13
FR7014568A FR2039429A1 (en) 1969-04-24 1970-04-22
GB1944970A GB1269864A (en) 1969-04-24 1970-04-23 Improvements in or relating to echo traps
JP3533870A JPS5117849B1 (en) 1969-04-24 1970-04-24

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691921023 DE1921023B2 (en) 1969-04-24 1969-04-24 FREQUENCY SELECTIVELY CONTROLLED ECHO LOCK

Publications (2)

Publication Number Publication Date
DE1921023A1 DE1921023A1 (en) 1971-02-18
DE1921023B2 true DE1921023B2 (en) 1971-05-13

Family

ID=5732271

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19691921023 Withdrawn DE1921023B2 (en) 1969-04-24 1969-04-24 FREQUENCY SELECTIVELY CONTROLLED ECHO LOCK

Country Status (1)

Country Link
DE (1) DE1921023B2 (en)

Also Published As

Publication number Publication date
DE1921023A1 (en) 1971-02-18

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Legal Events

Date Code Title Description
E77 Valid patent as to the heymanns-index 1977
EHJ Ceased/non-payment of the annual fee