ES8206126A1 - Procedimiento y sistema para mitigar el contraste de la se- nal de ruido en un sistema digital de transmision de inter- polacion de conversacion de canales multiples - Google Patents

Procedimiento y sistema para mitigar el contraste de la se- nal de ruido en un sistema digital de transmision de inter- polacion de conversacion de canales multiples

Info

Publication number
ES8206126A1
ES8206126A1 ES505288A ES505288A ES8206126A1 ES 8206126 A1 ES8206126 A1 ES 8206126A1 ES 505288 A ES505288 A ES 505288A ES 505288 A ES505288 A ES 505288A ES 8206126 A1 ES8206126 A1 ES 8206126A1
Authority
ES
Spain
Prior art keywords
channels
frames
active
background noise
digital message
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
ES505288A
Other languages
English (en)
Other versions
ES505288A0 (es
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.)
Nortel Networks Ltd
Original Assignee
Northern Telecom Ltd
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 Northern Telecom Ltd filed Critical Northern Telecom Ltd
Publication of ES8206126A1 publication Critical patent/ES8206126A1/es
Publication of ES505288A0 publication Critical patent/ES505288A0/es
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/17—Time-division multiplex systems in which the transmission channel allotted to a first user may be taken away and re-allotted to a second user if the first user becomes inactive, e.g. TASI
    • H04J3/172—Digital speech interpolation, i.e. DSI

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

PROCEDIMIENTO Y SISTEMA PARA MITIGAR EL CONTRASTE DE LA SEÑAL DE RUIDO EN UN SISTEMA DIGITAL DE TRANSMISION DE INTERPOLACION DE CONVERSACION DE CANLES MULTIPLES. PROCEDIMIENTO Y SISTEMA PARA MITIGAR EL CONTRASTE DE LA SEÑAL DE RUIDO. EL SISTEMA CONSTA DE UN DETECTOR DE CONVERSACION (104) QUE DETECTA LAS SEÑALES DE CONVERSACION EN UN TRAYECTO DE TRANSMISION POR CADA CANAL DE CADA SUPERCUADRO, DE UN DETECTOR DE TELEFONO DELCOLGADO (109) PARA DETERMINAR POR CADA CANAL DE CADA SUPERCUADRO SI EL CANAL SE ENCUENTRA EN ESTADO DESCOLGADO, DE UN DETECTOR DE ECO (111) PARA DETECTAR POR CADA CANL DE CADA SUPERCUADRO SEÑALES EN EL TRAYECTO DE TRANSMISION QUE SON ECOS DE LAS SEÑALES DE UN TRAYECTO DE RECEPCION.
ES505288A 1980-09-09 1981-09-08 Procedimiento y sistema para mitigar el contraste de la se- nal de ruido en un sistema digital de transmision de inter- polacion de conversacion de canales multiples Granted ES505288A0 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA000359965A CA1145074A (en) 1980-09-09 1980-09-09 Mitigation of noise signal contrast in a digital speech interpolation transmission system

Publications (2)

Publication Number Publication Date
ES8206126A1 true ES8206126A1 (es) 1982-06-16
ES505288A0 ES505288A0 (es) 1982-06-16

Family

ID=4117842

Family Applications (1)

Application Number Title Priority Date Filing Date
ES505288A Granted ES505288A0 (es) 1980-09-09 1981-09-08 Procedimiento y sistema para mitigar el contraste de la se- nal de ruido en un sistema digital de transmision de inter- polacion de conversacion de canales multiples

Country Status (6)

Country Link
EP (1) EP0047588B1 (es)
JP (1) JPS5780845A (es)
CA (1) CA1145074A (es)
DE (1) DE3165233D1 (es)
ES (1) ES505288A0 (es)
IE (1) IE52525B1 (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1137240A (en) * 1980-09-09 1982-12-07 Northern Telecom Limited Method of and apparatus for echo detection in voice channel signals

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1250452A (es) * 1967-09-26 1971-10-20
US4002841A (en) * 1976-01-21 1977-01-11 Bell Telephone Laboratories, Incorporated Data compression using nearly instantaneous companding in a digital speech interpolation system
US4059730A (en) * 1976-08-17 1977-11-22 Bell Telephone Laboratories, Incorporated Apparatus for mitigating signal distortion and noise signal contrast in a communications system

Also Published As

Publication number Publication date
DE3165233D1 (en) 1984-09-06
JPH0214822B2 (es) 1990-04-10
EP0047588A3 (en) 1982-03-31
EP0047588A2 (en) 1982-03-17
IE52525B1 (en) 1987-12-09
CA1145074A (en) 1983-04-19
EP0047588B1 (en) 1984-08-01
IE812072L (en) 1982-03-09
ES505288A0 (es) 1982-06-16
JPS5780845A (en) 1982-05-20

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