YU1000A - Postupak i uređaj za merenje parametara eha na telefonskim linijama - Google Patents
Postupak i uređaj za merenje parametara eha na telefonskim linijamaInfo
- Publication number
- YU1000A YU1000A YU1000A YU1000A YU1000A YU 1000 A YU1000 A YU 1000A YU 1000 A YU1000 A YU 1000A YU 1000 A YU1000 A YU 1000A YU 1000 A YU1000 A YU 1000A
- Authority
- YU
- Yugoslavia
- Prior art keywords
- telephone lines
- echo parameters
- given frequency
- measuring echo
- sinusoid
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/46—Monitoring; Testing
- H04B3/493—Testing echo effects or singing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/46—Arrangements for calling a number of substations in a predetermined sequence until an answer is obtained
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Monitoring And Testing Of Exchanges (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Interface Circuits In Exchanges (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
Test signal se uvodi na liniju (L) i detektuje se odgovarajući povratni signal koji stvara sama linija kao efekat eha. Signal koji ima sočivastu obvojnicu (envelopu) koristi se kao test signal i prvenstveno se generiše polazeći od prve sinusoide sa prvom datom frekvencijom, čija amplituda je modulisana sa drugom sinusoidom koja ima drugu datu frekvenciju, koja je niža od gore pomenute prve date frekvencije.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT97TO000626A IT1293441B1 (it) | 1997-07-11 | 1997-07-11 | Procedimento e dispositivo per la misurazione dei parametri dell'eco su linee telefoniche. |
Publications (2)
Publication Number | Publication Date |
---|---|
YU1000A true YU1000A (sh) | 2001-05-28 |
YU49150B YU49150B (sh) | 2004-03-12 |
Family
ID=11415862
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
YU1000A YU49150B (sh) | 1997-07-11 | 1998-07-07 | Postupak i uređaj za merenje parametara eha na telefonskim linijama |
Country Status (19)
Country | Link |
---|---|
US (1) | US6501830B1 (sh) |
EP (1) | EP1012997B1 (sh) |
JP (1) | JP3626094B2 (sh) |
KR (1) | KR20010021726A (sh) |
CN (1) | CN1263652A (sh) |
AR (1) | AR013362A1 (sh) |
AT (1) | ATE215286T1 (sh) |
AU (1) | AU729006B2 (sh) |
BR (1) | BR9810673B1 (sh) |
CA (1) | CA2295226C (sh) |
DE (1) | DE69804474T2 (sh) |
ES (1) | ES2175759T3 (sh) |
HR (1) | HRP980386A2 (sh) |
HU (1) | HUP0003047A2 (sh) |
IL (1) | IL133518A0 (sh) |
IT (1) | IT1293441B1 (sh) |
NO (1) | NO320584B1 (sh) |
WO (1) | WO1999003244A2 (sh) |
YU (1) | YU49150B (sh) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7236573B2 (en) | 2002-04-01 | 2007-06-26 | At&T Intellectual Property, Inc. | Method and apparatus for testing telephone sound quality |
EP1376997A1 (en) * | 2002-06-24 | 2004-01-02 | Alcatel | Method for testing and adapting an audio unit parameters to a telecommunication system |
CN100379210C (zh) * | 2003-06-08 | 2008-04-02 | 华为技术有限公司 | 通信***回波特性的在线测试方法及测试*** |
CN101119136B (zh) * | 2006-08-04 | 2012-07-11 | 华为技术有限公司 | 一种获取线路基本参数的方法及装置 |
CN109459731B (zh) * | 2018-12-13 | 2020-11-17 | 广州极飞科技有限公司 | 信号处理方法和装置、毫米波雷达 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3612782A (en) * | 1970-03-02 | 1971-10-12 | Bell Telephone Labor Inc | Method and apparatus for detecting the location of a fault between two repeaters of a one-way repeatered transmission line |
US3777256A (en) * | 1972-02-14 | 1973-12-04 | North Electronics Corp | Delay distortion measurement system |
US4039769A (en) * | 1976-04-22 | 1977-08-02 | Bradley Telcom Corporation | Instrument and method for measuring envelope delay in a transmission channel |
JPH01212127A (ja) * | 1988-02-19 | 1989-08-25 | Nec Corp | エコー除去方法及びエコー除去装置 |
JPH0282820A (ja) * | 1988-09-20 | 1990-03-23 | Nec Corp | 反響消去装置の自己診断回路 |
US5164989A (en) * | 1990-12-11 | 1992-11-17 | Octel Communications Corporation | Echo cancellation methods and apparatus for voice processing systems |
FR2713417B1 (fr) * | 1993-12-02 | 1996-02-02 | Europ Agence Spatiale | Procédé de réglage adaptatif d'un suppresseur d'écho. |
JP3198224B2 (ja) * | 1995-01-10 | 2001-08-13 | アンリツ株式会社 | 通話回線のエコー測定装置 |
-
1997
- 1997-07-11 IT IT97TO000626A patent/IT1293441B1/it active IP Right Grant
-
1998
- 1998-07-07 WO PCT/EP1998/004216 patent/WO1999003244A2/en active IP Right Grant
- 1998-07-07 BR BRPI9810673-2B1A patent/BR9810673B1/pt not_active IP Right Cessation
- 1998-07-07 AT AT98941303T patent/ATE215286T1/de active
- 1998-07-07 CA CA002295226A patent/CA2295226C/en not_active Expired - Fee Related
- 1998-07-07 US US09/445,950 patent/US6501830B1/en not_active Expired - Lifetime
- 1998-07-07 KR KR1020007000285A patent/KR20010021726A/ko not_active Application Discontinuation
- 1998-07-07 IL IL13351898A patent/IL133518A0/xx unknown
- 1998-07-07 HU HU0003047A patent/HUP0003047A2/hu unknown
- 1998-07-07 AU AU89740/98A patent/AU729006B2/en not_active Ceased
- 1998-07-07 ES ES98941303T patent/ES2175759T3/es not_active Expired - Lifetime
- 1998-07-07 YU YU1000A patent/YU49150B/sh unknown
- 1998-07-07 EP EP98941303A patent/EP1012997B1/en not_active Expired - Lifetime
- 1998-07-07 CN CN98807131A patent/CN1263652A/zh active Pending
- 1998-07-07 JP JP2000502612A patent/JP3626094B2/ja not_active Expired - Fee Related
- 1998-07-07 DE DE69804474T patent/DE69804474T2/de not_active Expired - Lifetime
- 1998-07-10 AR ARP980103378A patent/AR013362A1/es active IP Right Grant
- 1998-07-10 HR HRT097A000626A patent/HRP980386A2/hr not_active Application Discontinuation
-
2000
- 2000-01-10 NO NO20000119A patent/NO320584B1/no not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
ITTO970626A1 (it) | 1999-01-11 |
KR20010021726A (ko) | 2001-03-15 |
CA2295226C (en) | 2003-05-20 |
IL133518A0 (en) | 2001-04-30 |
NO320584B1 (no) | 2005-12-27 |
DE69804474D1 (de) | 2002-05-02 |
US6501830B1 (en) | 2002-12-31 |
BR9810673B1 (pt) | 2013-12-03 |
WO1999003244A2 (en) | 1999-01-21 |
EP1012997B1 (en) | 2002-03-27 |
AR013362A1 (es) | 2000-12-27 |
CN1263652A (zh) | 2000-08-16 |
NO20000119D0 (no) | 2000-01-10 |
AU8974098A (en) | 1999-02-08 |
NO20000119L (no) | 2000-01-10 |
CA2295226A1 (en) | 1999-01-21 |
HRP980386A2 (en) | 1999-06-30 |
IT1293441B1 (it) | 1999-03-01 |
DE69804474T2 (de) | 2002-10-31 |
YU49150B (sh) | 2004-03-12 |
ATE215286T1 (de) | 2002-04-15 |
WO1999003244A3 (en) | 1999-06-24 |
BR9810673A (pt) | 2000-12-05 |
AU729006B2 (en) | 2001-01-25 |
JP3626094B2 (ja) | 2005-03-02 |
JP2001510304A (ja) | 2001-07-31 |
ES2175759T3 (es) | 2002-11-16 |
EP1012997A2 (en) | 2000-06-28 |
HUP0003047A2 (hu) | 2001-01-29 |
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