TR200001967T2 - Bir bağlantının iki ucunda da oluşan ekonun kontrol edilmesi için yöntem ve ekipman. - Google Patents
Bir bağlantının iki ucunda da oluşan ekonun kontrol edilmesi için yöntem ve ekipman.Info
- Publication number
- TR200001967T2 TR200001967T2 TR2000/01967T TR200001967T TR200001967T2 TR 200001967 T2 TR200001967 T2 TR 200001967T2 TR 2000/01967 T TR2000/01967 T TR 2000/01967T TR 200001967 T TR200001967 T TR 200001967T TR 200001967 T2 TR200001967 T2 TR 200001967T2
- Authority
- TR
- Turkey
- Prior art keywords
- cancel
- echo
- connection
- mobile phone
- controlling
- Prior art date
Links
- 238000002592 echocardiography Methods 0.000 abstract 2
- 230000003044 adaptive effect Effects 0.000 abstract 1
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
- H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
- H04M9/082—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic using echo cancellers
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Telephonic Communication Services (AREA)
- Mobile Radio Communication Systems (AREA)
- Filters That Use Time-Delay Elements (AREA)
Abstract
Tek bir iki-uçlu eko iptalcisi (102) verilmekte olup bu iptalci eko yolunun impuls cevabini modellemek ve baglantinin PSTN tarafindan çikan ekoyu iptal etmek için bir adaptif FIR filtresi (112) ve baglantinin mobil telefon tarafindan çikan ekoyu iptal etmek için giris sinyal seviyeleri ile kontrol edilen bir lineer olmayan islemci (114) kullanir. Lineer islem fonksiyonu mobil telefon tarafindaki ekolari iptal etmek için kullanilmadigindan baglantinin her iki yanindaki ekolari tahmin ve iptal etmek için yönlendirilen algoritmalar tüm avantajlari ile birlikte tek bir DSP içinde çalistirilir.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/825,017 US6064873A (en) | 1997-03-26 | 1997-03-26 | Method and apparatus for controlling echo on both sides of a connection |
Publications (1)
Publication Number | Publication Date |
---|---|
TR200001967T2 true TR200001967T2 (tr) | 2000-09-21 |
Family
ID=25242913
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TR2000/01967T TR200001967T2 (tr) | 1997-03-26 | 1998-03-24 | Bir bağlantının iki ucunda da oluşan ekonun kontrol edilmesi için yöntem ve ekipman. |
TR1999/02332T TR199902332T2 (tr) | 1997-03-26 | 1998-03-24 | Bir baglantinin iki ucunda da olusan ekonun kontrol edilmesi için yöntem ve ekipman |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TR1999/02332T TR199902332T2 (tr) | 1997-03-26 | 1998-03-24 | Bir baglantinin iki ucunda da olusan ekonun kontrol edilmesi için yöntem ve ekipman |
Country Status (10)
Country | Link |
---|---|
US (1) | US6064873A (tr) |
EP (1) | EP0972355B1 (tr) |
JP (1) | JP2001521705A (tr) |
CN (1) | CN1192510C (tr) |
AU (1) | AU6754398A (tr) |
DE (1) | DE69842257D1 (tr) |
MY (1) | MY123985A (tr) |
PL (2) | PL187647B1 (tr) |
TR (2) | TR200001967T2 (tr) |
WO (1) | WO1998043368A2 (tr) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI105864B (fi) * | 1997-04-18 | 2000-10-13 | Nokia Networks Oy | Kaiunpoistomekanismi |
US6031908A (en) * | 1997-11-14 | 2000-02-29 | Tellabs Operations, Inc. | Echo canceller employing dual-H architecture having variable adaptive gain settings |
US6028929A (en) * | 1997-11-14 | 2000-02-22 | Tellabs Operations, Inc. | Echo canceller employing dual-H architecture having improved non-linear echo path detection |
US6487177B1 (en) * | 1998-06-12 | 2002-11-26 | Nortel Networks Limited | Method and system for enhancing communications efficiency in data communications networks |
US6678254B1 (en) | 1999-05-03 | 2004-01-13 | Nortel Networks Limited | Method and communication device for optimizing echo cancellation |
US6925174B2 (en) * | 1999-12-09 | 2005-08-02 | Broadcom Corporation | Interaction between echo canceller and packet voice processing |
US7920697B2 (en) * | 1999-12-09 | 2011-04-05 | Broadcom Corp. | Interaction between echo canceller and packet voice processing |
US20150117441A1 (en) * | 2013-10-28 | 2015-04-30 | Michael Pascazi | System and method for cell phone to cell phone signal transmission via the internet |
JP2002050986A (ja) * | 2000-08-03 | 2002-02-15 | Matsushita Electric Ind Co Ltd | エコーキャンセル方法及びエコーキャンセル装置 |
US6766020B1 (en) | 2001-02-23 | 2004-07-20 | 3Com Corporation | System and method for comfort noise generation |
US7251213B2 (en) * | 2002-09-17 | 2007-07-31 | At&T Corp. | Method for remote measurement of echo path delay |
US7536007B2 (en) * | 2004-12-30 | 2009-05-19 | Alcatel Lucent | Echo cancellation using adaptive IIR and FIR filters |
US7596220B2 (en) * | 2004-12-30 | 2009-09-29 | Alcatel Lucent | Echo cancellation using adaptive IIR and FIR filters |
CN1937657B (zh) * | 2005-09-20 | 2011-04-20 | 华为技术有限公司 | 对线性回波进行控制的方法 |
US8078659B2 (en) * | 2005-10-31 | 2011-12-13 | Telefonaktiebolaget L M Ericsson (Publ) | Reduction of digital filter delay |
US8873742B1 (en) * | 2006-03-15 | 2014-10-28 | Sprint Communications Company L.P. | Echo canceller auditor |
WO2013121306A2 (en) | 2012-02-14 | 2013-08-22 | Koninklijke Philips N.V. | Audio signal processing in a communication system |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4629829A (en) * | 1984-12-14 | 1986-12-16 | Motorola, Inc. | Full duplex speakerphone for radio and landline telephones |
JPH0650829B2 (ja) * | 1986-09-16 | 1994-06-29 | 日本電気株式会社 | エコ−キヤンセラ方式モデム |
JPH03159423A (ja) * | 1989-11-17 | 1991-07-09 | Fujitsu Ltd | エコーキャンセラにおけるダブルトーク検出方式 |
JP2518433B2 (ja) * | 1990-01-24 | 1996-07-24 | 日本電気株式会社 | ダブルト―ク検出回路 |
US5157653A (en) * | 1990-08-03 | 1992-10-20 | Coherent Communications Systems Corp. | Residual echo elimination with proportionate noise injection |
GB2256351B (en) * | 1991-05-25 | 1995-07-05 | Motorola Inc | Enhancement of echo return loss |
US5477535A (en) * | 1991-11-04 | 1995-12-19 | Nokia Telecommunications Oy | Method of preventing a divergence of an adaptive echo canceller in a noisy signal environment |
US5295136A (en) * | 1992-04-13 | 1994-03-15 | Motorola, Inc. | Method of performing convergence in a, least mean square, adaptive filter, echo canceller |
US5307405A (en) * | 1992-09-25 | 1994-04-26 | Qualcomm Incorporated | Network echo canceller |
JP2508574B2 (ja) * | 1992-11-10 | 1996-06-19 | 日本電気株式会社 | 多チャンネルエコ―除去装置 |
JPH07288493A (ja) * | 1994-04-18 | 1995-10-31 | Fujitsu Ltd | ダブルトーク検出装置 |
US5587998A (en) * | 1995-03-03 | 1996-12-24 | At&T | Method and apparatus for reducing residual far-end echo in voice communication networks |
US5610909A (en) * | 1995-05-31 | 1997-03-11 | Lucent Technologies Inc. | Multistage echo canceler including time variation compensation |
-
1997
- 1997-03-26 US US08/825,017 patent/US6064873A/en not_active Expired - Lifetime
-
1998
- 1998-03-19 MY MYPI98001204A patent/MY123985A/en unknown
- 1998-03-24 AU AU67543/98A patent/AU6754398A/en not_active Abandoned
- 1998-03-24 CN CN98805440.XA patent/CN1192510C/zh not_active Expired - Fee Related
- 1998-03-24 WO PCT/SE1998/000535 patent/WO1998043368A2/en active Application Filing
- 1998-03-24 PL PL98335881A patent/PL187647B1/pl unknown
- 1998-03-24 TR TR2000/01967T patent/TR200001967T2/tr unknown
- 1998-03-24 PL PL98361692A patent/PL187658B1/pl unknown
- 1998-03-24 TR TR1999/02332T patent/TR199902332T2/tr unknown
- 1998-03-24 EP EP98912855A patent/EP0972355B1/en not_active Expired - Lifetime
- 1998-03-24 DE DE69842257T patent/DE69842257D1/de not_active Expired - Lifetime
- 1998-03-24 JP JP54556598A patent/JP2001521705A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
CN1257624A (zh) | 2000-06-21 |
CN1192510C (zh) | 2005-03-09 |
EP0972355A2 (en) | 2000-01-19 |
MY123985A (en) | 2006-06-30 |
DE69842257D1 (de) | 2011-06-16 |
TR199902332T2 (tr) | 2000-03-21 |
EP0972355B1 (en) | 2011-05-04 |
JP2001521705A (ja) | 2001-11-06 |
US6064873A (en) | 2000-05-16 |
WO1998043368A3 (en) | 1999-01-21 |
WO1998043368A2 (en) | 1998-10-01 |
AU6754398A (en) | 1998-10-20 |
PL187658B1 (pl) | 2004-08-31 |
PL335881A1 (en) | 2000-05-22 |
PL187647B1 (pl) | 2004-08-31 |
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