JPS5129014A - - Google Patents
Info
- Publication number
- JPS5129014A JPS5129014A JP49102794A JP10279474A JPS5129014A JP S5129014 A JPS5129014 A JP S5129014A JP 49102794 A JP49102794 A JP 49102794A JP 10279474 A JP10279474 A JP 10279474A JP S5129014 A JPS5129014 A JP S5129014A
- Authority
- JP
- Japan
- 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.)
- Granted
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)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10279474A JPS5325767B2 (ja) | 1974-09-05 | 1974-09-05 | |
FR7527052A FR2284229A1 (fr) | 1974-09-05 | 1975-09-03 | Controleur d'echo comprenant un commutateur de mode entre un suppresseur et un annulateur d'echo |
CA234,789A CA1029139A (en) | 1974-09-05 | 1975-09-04 | Echo controller comprising a mode switch for switching echo suppressor and canceller |
US05/610,372 US4005277A (en) | 1974-09-05 | 1975-09-04 | Echo controller comprising a mode switch for switching echo suppressor and canceller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10279474A JPS5325767B2 (ja) | 1974-09-05 | 1974-09-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5129014A true JPS5129014A (ja) | 1976-03-11 |
JPS5325767B2 JPS5325767B2 (ja) | 1978-07-28 |
Family
ID=14336994
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10279474A Expired JPS5325767B2 (ja) | 1974-09-05 | 1974-09-05 |
Country Status (4)
Country | Link |
---|---|
US (1) | US4005277A (ja) |
JP (1) | JPS5325767B2 (ja) |
CA (1) | CA1029139A (ja) |
FR (1) | FR2284229A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52109538A (en) * | 1976-03-10 | 1977-09-13 | Kadowaki Toshuki | Electrostatic painting device |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4282411A (en) * | 1979-06-04 | 1981-08-04 | Tellabs, Inc. | Residual echo suppressor for echo canceller |
US4360712A (en) * | 1979-09-05 | 1982-11-23 | Communications Satellite Corporation | Double talk detector for echo cancellers |
US4382164A (en) * | 1980-01-25 | 1983-05-03 | Bell Telephone Laboratories, Incorporated | Signal stretcher for envelope generator |
JPS57500957A (ja) * | 1980-06-25 | 1982-05-27 | ||
DE3070399D1 (en) * | 1980-12-06 | 1985-05-02 | Communications Satellite Corp | Improved double talk detector for echo cancellers |
US4628156A (en) * | 1982-12-27 | 1986-12-09 | International Business Machines Corporation | Canceller trained echo suppressor |
US4546216A (en) * | 1983-01-27 | 1985-10-08 | At&T Bell Laboratories | Echo suppressor for improving echo canceler performance |
JPS602751U (ja) * | 1983-06-21 | 1985-01-10 | 松下電器産業株式会社 | 空調機のル−バ−装置 |
DE3406407A1 (de) * | 1983-09-29 | 1985-04-11 | Siemens AG, 1000 Berlin und 8000 München | Schaltungsanordnung zur steuerung der uebertragungsfaehigkeit des empfangszweiges einer uebertragungseinrichtung |
IL70046A0 (en) * | 1983-10-25 | 1984-01-31 | Israel Electronics Corp | Echo eliminator |
SE441052B (sv) * | 1984-02-01 | 1985-09-02 | Ellemtel Utvecklings Ab | Forfarande for att testa funktionen hos en anordning for adaptiv ekoeliminering |
US4609787A (en) * | 1984-05-21 | 1986-09-02 | Communications Satellite Corporation | Echo canceller with extended frequency range |
JPS60194238U (ja) * | 1984-06-01 | 1985-12-24 | 松下精工株式会社 | 空気調和機の吹出口装置 |
DE3576772D1 (de) * | 1985-04-30 | 1990-04-26 | Ibm | Verfahren und vorrichtung zur echoannullierung in einem uebertragungsnetzwerk. |
JPH04311197A (ja) * | 1991-04-09 | 1992-11-02 | Canon Inc | 電話交換装置 |
JP2626437B2 (ja) * | 1992-12-28 | 1997-07-02 | 日本電気株式会社 | 残留エコー制御装置 |
US5471527A (en) | 1993-12-02 | 1995-11-28 | Dsc Communications Corporation | Voice enhancement system and method |
US5668871A (en) * | 1994-04-29 | 1997-09-16 | Motorola, Inc. | Audio signal processor and method therefor for substantially reducing audio feedback in a cummunication unit |
JP2702423B2 (ja) * | 1994-11-11 | 1998-01-21 | 埼玉日本電気株式会社 | 切替式エコーキャンセラ |
US5809463A (en) * | 1995-09-15 | 1998-09-15 | Hughes Electronics | Method of detecting double talk in an echo canceller |
US6243366B1 (en) * | 1997-06-20 | 2001-06-05 | At&T Corp. | Method and apparatus for providing interactive two-way communications using a single one-way channel in satellite systems |
US9042535B2 (en) | 2010-09-29 | 2015-05-26 | Cisco Technology, Inc. | Echo control optimization |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3508017A (en) * | 1967-12-08 | 1970-04-21 | Bell Telephone Labor Inc | Adaptive echo canceller with an output filter |
DE1816153B2 (de) * | 1968-12-20 | 1971-04-15 | Schaltungsanordnung zur echounterdrueckung in einem sprech kreis auf einem vierdraht uebertragungssystem bei einem uebergang auf einen zweidrahtuebertragungsweg | |
US3894200A (en) * | 1973-10-10 | 1975-07-08 | Communications Satellite Corp | Adaptive echo canceller with digital center clipping |
-
1974
- 1974-09-05 JP JP10279474A patent/JPS5325767B2/ja not_active Expired
-
1975
- 1975-09-03 FR FR7527052A patent/FR2284229A1/fr active Granted
- 1975-09-04 US US05/610,372 patent/US4005277A/en not_active Expired - Lifetime
- 1975-09-04 CA CA234,789A patent/CA1029139A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52109538A (en) * | 1976-03-10 | 1977-09-13 | Kadowaki Toshuki | Electrostatic painting device |
JPS5748977B2 (ja) * | 1976-03-10 | 1982-10-19 |
Also Published As
Publication number | Publication date |
---|---|
US4005277A (en) | 1977-01-25 |
JPS5325767B2 (ja) | 1978-07-28 |
FR2284229B1 (ja) | 1980-01-25 |
FR2284229A1 (fr) | 1976-04-02 |
CA1029139A (en) | 1978-04-04 |