DK254577A - - Google Patents

Info

Publication number
DK254577A
DK254577A DK254577A DK254577A DK254577A DK 254577 A DK254577 A DK 254577A DK 254577 A DK254577 A DK 254577A DK 254577 A DK254577 A DK 254577A DK 254577 A DK254577 A DK 254577A
Authority
DK
Denmark
Application number
DK254577A
Other languages
Danish (da)
Other versions
DK142390C (
DK142390B (da
Inventor
L P Karlsson
Original Assignee
L P Karlsson
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 L P Karlsson filed Critical L P Karlsson
Publication of DK254577A publication Critical patent/DK254577A/da
Publication of DK142390B publication Critical patent/DK142390B/da
Application granted granted Critical
Publication of DK142390C publication Critical patent/DK142390C/da

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H04M9/085—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic using digital techniques

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Liquid Developers In Electrophotography (AREA)
  • Mobile Radio Communication Systems (AREA)
DK254577AA 1976-06-08 1977-06-08 Taleskifteanordning. DK142390B (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7606399 1976-06-08
SE7606399A SE399502B (sv) 1976-06-08 1976-06-08 For telefonanleggningar med hogtalarforsedda telefonapparater avsedd styranordning

Publications (3)

Publication Number Publication Date
DK254577A true DK254577A ( ) 1977-12-09
DK142390B DK142390B (da) 1980-10-20
DK142390C DK142390C ( ) 1981-03-16

Family

ID=20328149

Family Applications (1)

Application Number Title Priority Date Filing Date
DK254577AA DK142390B (da) 1976-06-08 1977-06-08 Taleskifteanordning.

Country Status (8)

Country Link
US (1) US4123620A ( )
AU (1) AU508617B2 ( )
DE (1) DE2726060A1 ( )
DK (1) DK142390B ( )
FR (1) FR2354668A1 ( )
GB (1) GB1524756A ( )
NO (1) NO141968B ( )
SE (1) SE399502B ( )

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1149524A (en) * 1980-10-03 1983-07-05 David H.A. Black Noise signal level control in a tasi system
GB2122851B (en) * 1982-06-10 1986-03-19 Standard Telephones Cables Ltd Loudspeaking telephones
GB2174578B (en) * 1985-05-04 1988-11-09 Stc Plc Loud speaking telephone
DE4130045A1 (de) * 1991-09-10 1993-03-18 Standard Elektrik Lorenz Ag Schaltungsanordnung zur dynamiksteuerung eines sprachendgeraetes
US5384838A (en) * 1992-05-19 1995-01-24 Hoffman; Ronald J. System for communicating through partitions
US8284926B2 (en) * 2007-09-26 2012-10-09 Avaya Inc. Enterprise-distributed noise management
US10751001B2 (en) 2013-12-03 2020-08-25 General Electric Company Systems and methods for tracking and analysis of electrical-physiological interference

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3849603A (en) * 1972-10-30 1974-11-19 Mosler Safe Co Remote banking intercom system
US3832491A (en) * 1973-02-13 1974-08-27 Communications Satellite Corp Digital voice switch with an adaptive digitally-controlled threshold
US3958084A (en) * 1974-09-30 1976-05-18 Rockwell International Corporation Conferencing apparatus
US4024345A (en) * 1976-01-14 1977-05-17 Strom Industries International, Inc. Audio program and telephonic communication system

Also Published As

Publication number Publication date
FR2354668A1 (fr) 1978-01-06
SE7606399L (sv) 1977-12-09
SE399502B (sv) 1978-02-13
GB1524756A (en) 1978-09-13
DK142390C ( ) 1981-03-16
DK142390B (da) 1980-10-20
AU2580577A (en) 1978-12-07
AU508617B2 (en) 1980-03-27
NO141968B (no) 1980-02-25
US4123620A (en) 1978-10-31
DE2726060A1 (de) 1977-12-22
NO771984L (no) 1977-12-09

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