DE3375835D1 - Process and device for evaluating the noise level on a telephone line - Google Patents

Process and device for evaluating the noise level on a telephone line

Info

Publication number
DE3375835D1
DE3375835D1 DE8383111149T DE3375835T DE3375835D1 DE 3375835 D1 DE3375835 D1 DE 3375835D1 DE 8383111149 T DE8383111149 T DE 8383111149T DE 3375835 T DE3375835 T DE 3375835T DE 3375835 D1 DE3375835 D1 DE 3375835D1
Authority
DE
Germany
Prior art keywords
evaluating
telephone line
noise level
noise
telephone
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
DE8383111149T
Other languages
English (en)
Inventor
Bergh Guy De
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.)
Alcatel CIT SA
Original Assignee
Alcatel CIT SA
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 Alcatel CIT SA filed Critical Alcatel CIT SA
Application granted granted Critical
Publication of DE3375835D1 publication Critical patent/DE3375835D1/de
Expired 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
    • H04J3/175—Speech activity or inactivity detectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/26—Measuring noise figure; Measuring signal-to-noise ratio

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Radio Transmission System (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
DE8383111149T 1982-11-10 1983-11-08 Process and device for evaluating the noise level on a telephone line Expired DE3375835D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8218854A FR2535854A1 (fr) 1982-11-10 1982-11-10 Procede et dispositif d'evaluation du niveau de bruit sur une voie telephonique

Publications (1)

Publication Number Publication Date
DE3375835D1 true DE3375835D1 (en) 1988-04-07

Family

ID=9279075

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8383111149T Expired DE3375835D1 (en) 1982-11-10 1983-11-08 Process and device for evaluating the noise level on a telephone line

Country Status (7)

Country Link
US (1) US4552996A (de)
EP (1) EP0109037B1 (de)
JP (1) JPS59100643A (de)
CA (1) CA1200866A (de)
DE (1) DE3375835D1 (de)
FR (1) FR2535854A1 (de)
IE (1) IE56418B1 (de)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4764966A (en) * 1985-10-11 1988-08-16 International Business Machines Corporation Method and apparatus for voice detection having adaptive sensitivity
US4887289A (en) * 1988-08-29 1989-12-12 New York Telephone Company Remote testing of a trunk leading to an automatic call distributor
US5161185A (en) * 1989-06-21 1992-11-03 Texas Instruments Incorporated Method and apparatus for reducing noise in a digital voltage signal
US5355114A (en) * 1991-05-10 1994-10-11 Echelon Corporation Reconstruction of signals using redundant channels
US5218616A (en) * 1991-10-02 1993-06-08 Communications Technology Corporation Telephone line tester
US5216702A (en) * 1992-02-27 1993-06-01 At&T Bell Laboratories Nonintrusive speech level and dynamic noise measurements
EP0562407B1 (de) * 1992-03-23 1998-09-16 THOMSON multimedia Verfahren und Gerät zur Rauschmessung
US5617508A (en) * 1992-10-05 1997-04-01 Panasonic Technologies Inc. Speech detection device for the detection of speech end points based on variance of frequency band limited energy
KR0143313B1 (ko) * 1995-07-08 1998-08-01 김광호 키폰시스템에서의 밸런스 네트워크
US5768355A (en) * 1996-05-16 1998-06-16 Science Dynamics Corporation Three-way call detection system
US6002762A (en) * 1996-09-30 1999-12-14 At&T Corp Method and apparatus for making nonintrusive noise and speech level measurements on voice calls
US5793864A (en) * 1996-12-12 1998-08-11 At&T Corp. Nonintrusive measurement of echo power and echo path delay present on a transmission path
US5960060A (en) * 1997-08-19 1999-09-28 J. V. Technologies, Inc. Line tester for coin-operated telephones
US6480823B1 (en) 1998-03-24 2002-11-12 Matsushita Electric Industrial Co., Ltd. Speech detection for noisy conditions
US7899167B1 (en) 2003-08-15 2011-03-01 Securus Technologies, Inc. Centralized call processing
US7505406B1 (en) 2001-07-13 2009-03-17 Evercom Systems, Inc. Public telephone control with voice over internet protocol transmission
US8000269B1 (en) 2001-07-13 2011-08-16 Securus Technologies, Inc. Call processing with voice over internet protocol transmission
US9020114B2 (en) 2002-04-29 2015-04-28 Securus Technologies, Inc. Systems and methods for detecting a call anomaly using biometric identification
US9026468B2 (en) 2002-04-29 2015-05-05 Securus Technologies, Inc. System and method for proactively establishing a third-party payment account for services rendered to a resident of a controlled-environment facility
US7860222B1 (en) 2003-11-24 2010-12-28 Securus Technologies, Inc. Systems and methods for acquiring, accessing, and analyzing investigative information
US7916845B2 (en) 2006-04-13 2011-03-29 Securus Technologies, Inc. Unauthorized call activity detection and prevention systems and methods for a Voice over Internet Protocol environment
EP1376997A1 (de) * 2002-06-24 2004-01-02 Alcatel Verfahren zum Testen und Anpassen der Audioeinheitsparameter für ein Telekommunikationssystem
US7529357B1 (en) 2003-08-15 2009-05-05 Evercom Systems, Inc. Inmate management and call processing systems and methods
US8073042B1 (en) * 2005-04-13 2011-12-06 Cypress Semiconductor Corporation Recursive range controller
US20060241937A1 (en) * 2005-04-21 2006-10-26 Ma Changxue C Method and apparatus for automatically discriminating information bearing audio segments and background noise audio segments
KR100834679B1 (ko) * 2006-10-31 2008-06-02 삼성전자주식회사 음성 인식 오류 통보 장치 및 방법
US10796392B1 (en) 2007-05-22 2020-10-06 Securus Technologies, Llc Systems and methods for facilitating booking, bonding and release
KR100867225B1 (ko) * 2008-04-28 2008-11-06 주식회사 대영 장비 보호를 위한 도난방지 감시시스템

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074201A (en) * 1976-07-26 1978-02-14 Gte Sylvania Incorporated Signal analyzer with noise estimation and signal to noise readout
US4351983A (en) * 1979-03-05 1982-09-28 International Business Machines Corp. Speech detector with variable threshold
FR2451680A1 (fr) * 1979-03-12 1980-10-10 Soumagne Joel Discriminateur parole/silence pour interpolation de la parole
FR2478320A1 (fr) * 1980-03-17 1981-09-18 Telediffusion Fse Dispositif d'acquisition et de moyennage des echantillons d'un signal periodique bruite
US4357491A (en) * 1980-09-16 1982-11-02 Northern Telecom Limited Method of and apparatus for detecting speech in a voice channel signal

Also Published As

Publication number Publication date
JPH0376611B2 (de) 1991-12-06
IE56418B1 (en) 1991-07-31
IE832622L (en) 1984-05-10
JPS59100643A (ja) 1984-06-09
EP0109037A1 (de) 1984-05-23
US4552996A (en) 1985-11-12
FR2535854B1 (de) 1984-12-21
CA1200866A (fr) 1986-02-18
FR2535854A1 (fr) 1984-05-11
EP0109037B1 (de) 1988-03-02

Similar Documents

Publication Publication Date Title
DE3375835D1 (en) Process and device for evaluating the noise level on a telephone line
JPS57212897A (en) Acoustic device
GB2147074B (en) Pipe coupling-pressure reduction device
GB2086195B (en) Noise reducing apparatus
JPS5747628A (en) Method and device for manufacturing hose
GB2101449B (en) Microphone device for noise measurement
ZA826941B (en) Telephone apparatus
GB8422110D0 (en) Electronic level device
JPS5727100A (en) Noise removing device
GB2100096B (en) Telephone apparatus
GB8428354D0 (en) Centring device
JPS5782416A (en) Reduction device
JPS576178A (en) Vibration preventing device
JPS576897A (en) Noise reducing device
GB8422336D0 (en) Telephone security device
GB8419089D0 (en) Pick-up device
JPS5726897A (en) Noise erasing device
JPS5716531A (en) Noise preventing device
JPS5719889A (en) Electronic lot drawing device
JPS5714990A (en) Electronic lot drawing device
JPS5762600A (en) Electronic part inspecting device
GB2185170B (en) Testing telephone lines
JPS5719462A (en) Cradling fitting
GB2152332B (en) An automatic telephone answering apparatus
JPS56135289A (en) Device for automatically checking ticket with telephone

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee