ES396611A1 - Perfeccionamientos introducidos en un supresor de eco para un circuito telefonico en un sistema de transmision por cua-tro hilos. - Google Patents

Perfeccionamientos introducidos en un supresor de eco para un circuito telefonico en un sistema de transmision por cua-tro hilos.

Info

Publication number
ES396611A1
ES396611A1 ES396611A ES396611A ES396611A1 ES 396611 A1 ES396611 A1 ES 396611A1 ES 396611 A ES396611 A ES 396611A ES 396611 A ES396611 A ES 396611A ES 396611 A1 ES396611 A1 ES 396611A1
Authority
ES
Spain
Prior art keywords
speech
echo suppressor
transmission
path
transmission system
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.)
Expired
Application number
ES396611A
Other languages
English (en)
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 ES396611A1 publication Critical patent/ES396611A1/es
Expired 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)
  • Telephone Function (AREA)
ES396611A 1970-11-03 1971-11-03 Perfeccionamientos introducidos en un supresor de eco para un circuito telefonico en un sistema de transmision por cua-tro hilos. Expired ES396611A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702054073 DE2054073B2 (de) 1970-11-03 1970-11-03 Echosperre fuer einen sprechkreis auf einem vierdraht-uebertragungssystem

Publications (1)

Publication Number Publication Date
ES396611A1 true ES396611A1 (es) 1974-12-01

Family

ID=5787056

Family Applications (1)

Application Number Title Priority Date Filing Date
ES396611A Expired ES396611A1 (es) 1970-11-03 1971-11-03 Perfeccionamientos introducidos en un supresor de eco para un circuito telefonico en un sistema de transmision por cua-tro hilos.

Country Status (8)

Country Link
US (1) US3826878A (es)
AU (1) AU461069B2 (es)
DE (1) DE2054073B2 (es)
ES (1) ES396611A1 (es)
FR (1) FR2112418B1 (es)
GB (1) GB1329890A (es)
IL (1) IL37987A (es)
NL (1) NL151598B (es)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4028506A (en) * 1973-12-12 1977-06-07 Nippon Electric Company, Ltd. Maximum value tracing circuit for digitized voice signals
US3906172A (en) * 1974-04-22 1975-09-16 Gen Electric Digital echo suppressor
JPS6050092B2 (ja) * 1977-11-08 1985-11-06 ケイディディ株式会社 適応制御型反響阻止装置
US4215252A (en) * 1978-09-27 1980-07-29 Communications Satellite Corporation Video teleconference audio echo control unit
US6510224B1 (en) 1999-05-20 2003-01-21 Telefonaktiebolaget L M Ericsson Enhancement of near-end voice signals in an echo suppression system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH492357A (it) * 1966-12-24 1970-06-15 Consiglio Naz Delle Ricerche E Procedimento per migliorare la qualità della trasmissione di circuiti telefonici
US3560669A (en) * 1969-02-25 1971-02-02 Wescom Echo suppressor

Also Published As

Publication number Publication date
GB1329890A (en) 1973-09-12
IL37987A0 (en) 1971-12-29
US3826878A (en) 1974-07-30
NL7115076A (es) 1972-05-05
NL151598B (nl) 1976-11-15
AU461069B2 (en) 1975-05-15
DE2054073A1 (de) 1972-05-10
IL37987A (en) 1974-05-16
DE2054073B2 (de) 1972-09-28
FR2112418B1 (es) 1976-10-29
AU3491071A (en) 1973-05-03
FR2112418A1 (es) 1972-06-16

Similar Documents

Publication Publication Date Title
GB1235059A (en) Improvements in or relating to telecommunications systems
ES396611A1 (es) Perfeccionamientos introducidos en un supresor de eco para un circuito telefonico en un sistema de transmision por cua-tro hilos.
CA960311A (en) Transmission system and associated transmitters and receivers for the transmission of synchronous pulse signals
CA918829A (en) Transmit only acoustic coupler
GB1236510A (en) Improvements in or relating to signal receiving systems
IL44495A (en) Camouflaged speech signal transmission systems
CA934041A (en) System for the transmission of signals between two terminal stations
CA821029A (en) Communication systems for the transmission of signals
CA966236A (en) Transmission of supervisory signals through a tdm telegraph system
AU220561A (en) Communication systems having means for detecting faulty telegraph signals
JPS5225540A (en) Two-wire-four-wire conversion circuit
CA425219A (en) Signal impulse sending system
JPS5335493A (en) Object approach alarm equipment
CA431686A (en) Fire alarm signal system
CA648567A (en) Pulse echo type detecting system
CA665977A (en) System for transmitting special signals for impulse type telecommunication systems
CA428861A (en) Alarm signal system
CA427711A (en) Amplitude range control and signal transmission system
CA743672A (en) Detection of acoustic signals
GB1464899A (en) Remote control arrangements
CA856905A (en) Adaptive echo canceller with an output filter
JPS5379306A (en) Dp sugnal transmission system
AU283563B2 (en) Improvements in or relating to communication systems forthe transmission of signals
AU278971B2 (en) Signal transmitting system
CA800672A (en) Communication systems for the transmission of signals through a transmission cable