CH202982A - Establishment with at least two speech paths in telephone systems. - Google Patents

Establishment with at least two speech paths in telephone systems.

Info

Publication number
CH202982A
CH202982A CH202982DA CH202982A CH 202982 A CH202982 A CH 202982A CH 202982D A CH202982D A CH 202982DA CH 202982 A CH202982 A CH 202982A
Authority
CH
Switzerland
Prior art keywords
establishment
telephone systems
speech paths
speech
paths
Prior art date
Application number
Other languages
German (de)
Inventor
Ernest Ryall Leonard
Original Assignee
Ernest Ryall Leonard
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 Ernest Ryall Leonard filed Critical Ernest Ryall Leonard
Publication of CH202982A publication Critical patent/CH202982A/en

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)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Interface Circuits In Exchanges (AREA)
CH202982D 1933-11-14 1934-11-14 Establishment with at least two speech paths in telephone systems. CH202982A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB202982X 1933-11-14

Publications (1)

Publication Number Publication Date
CH202982A true CH202982A (en) 1939-02-15

Family

ID=10143647

Family Applications (1)

Application Number Title Priority Date Filing Date
CH202982D CH202982A (en) 1933-11-14 1934-11-14 Establishment with at least two speech paths in telephone systems.

Country Status (7)

Country Link
US (1) US2082357A (en)
BE (1) BE406242A (en)
CH (1) CH202982A (en)
DE (1) DE677043C (en)
FR (1) FR781186A (en)
GB (2) GB430567A (en)
NL (1) NL40266C (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE890062C (en) * 1936-10-14 1953-09-17 Siemens Ag Circuit arrangement for preventing electroacoustic feedback, especially in loudspeaker systems
DE882420C (en) * 1938-04-12 1953-07-09 Siemens Ag Circuit arrangement for feedback locks in loudspeaker systems
DE744088C (en) * 1938-05-10 1944-01-08 Siemens Ag Loudspeaker system with feedback lock
DE759529C (en) * 1940-04-26 1954-05-03 Hell Rudolf Dr Ing Feedback lock
DE896058C (en) * 1941-02-21 1953-11-09 Electrical Fono Films Co As Dynamic control circuit with adjustable degree of control
GB561405A (en) * 1942-11-14 1944-05-18 Automatic Telephone & Elect Improvements in or relating to telecommunication systems
US2696529A (en) * 1950-09-02 1954-12-07 Bell Telephone Labor Inc Voice-operated switching system

Also Published As

Publication number Publication date
FR781186A (en) 1935-05-10
US2082357A (en) 1937-06-01
GB430567A (en) 1935-06-14
DE677043C (en) 1939-06-17
GB430158A (en) 1935-06-14
BE406242A (en)
NL40266C (en)

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