DE69840179D1 - Echokompensator unter verwendung einer dual-h architektur mit split-adaptivenverstärkungseinstellungen - Google Patents
Echokompensator unter verwendung einer dual-h architektur mit split-adaptivenverstärkungseinstellungenInfo
- Publication number
- DE69840179D1 DE69840179D1 DE69840179T DE69840179T DE69840179D1 DE 69840179 D1 DE69840179 D1 DE 69840179D1 DE 69840179 T DE69840179 T DE 69840179T DE 69840179 T DE69840179 T DE 69840179T DE 69840179 D1 DE69840179 D1 DE 69840179D1
- Authority
- DE
- Germany
- Prior art keywords
- architecture
- dual
- gain settings
- adaptive gain
- echo compensator
- 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 - Lifetime
Links
Classifications
-
- 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)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Filters That Use Time-Delay Elements (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/970,229 US6240180B1 (en) | 1997-11-14 | 1997-11-14 | Echo canceller employing dual-H architecture having split adaptive gain settings |
PCT/US1998/024211 WO1999026399A1 (en) | 1997-11-14 | 1998-11-13 | Echo canceller employing dual-h architecture having split adaptive gain settings |
Publications (1)
Publication Number | Publication Date |
---|---|
DE69840179D1 true DE69840179D1 (de) | 2008-12-11 |
Family
ID=25516624
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69840179T Expired - Lifetime DE69840179D1 (de) | 1997-11-14 | 1998-11-13 | Echokompensator unter verwendung einer dual-h architektur mit split-adaptivenverstärkungseinstellungen |
Country Status (7)
Country | Link |
---|---|
US (4) | US6240180B1 (de) |
EP (2) | EP2019543A1 (de) |
JP (1) | JP2002502137A (de) |
AU (1) | AU743856B2 (de) |
CA (1) | CA2307678A1 (de) |
DE (1) | DE69840179D1 (de) |
WO (1) | WO1999026399A1 (de) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
US6240180B1 (en) * | 1997-11-14 | 2001-05-29 | Tellabs Operations, Inc. | Echo canceller employing dual-H architecture having split adaptive gain settings |
US7164659B2 (en) * | 1999-12-09 | 2007-01-16 | Broadcom Corporation | Adaptive gain control based on echo canceller performance information |
US7068780B1 (en) | 2000-08-30 | 2006-06-27 | Conexant, Inc. | Hybrid echo canceller |
DE10139779C2 (de) * | 2001-08-03 | 2003-06-26 | Infineon Technologies Ag | Verfahren zum Übertragen von Datenströmen und Warmstart-Sequenz für S(H)DSL-Sendeempfangseinrichtungen |
US6980646B1 (en) * | 2001-10-12 | 2005-12-27 | Nortel Networks Limited | Apparatus and method for echo cancellation |
GB2389286A (en) | 2002-05-28 | 2003-12-03 | Mitel Knowledge Corp | Echo cancellation |
US7251213B2 (en) | 2002-09-17 | 2007-07-31 | At&T Corp. | Method for remote measurement of echo path delay |
US7627111B2 (en) * | 2002-11-25 | 2009-12-01 | Intel Corporation | Noise matching for echo cancellers |
US7471788B2 (en) * | 2002-11-25 | 2008-12-30 | Intel Corporation | Echo cancellers for sparse channels |
US7099458B2 (en) * | 2003-12-12 | 2006-08-29 | Motorola, Inc. | Downlink activity and double talk probability detector and method for an echo canceler circuit |
US7046794B2 (en) * | 2003-12-12 | 2006-05-16 | Motorola, Inc. | Double talk activity detector and method for an echo canceler circuit |
GB2427332B (en) * | 2005-06-16 | 2007-05-16 | Trinity Convergence Inc | Systems and methods for adaptive echo cancellation |
US7991146B2 (en) * | 2005-11-15 | 2011-08-02 | Mitel Networks Corporation | Anti-howling structure |
US8014517B2 (en) * | 2007-04-18 | 2011-09-06 | Gas Technology Institute | Method and apparatus for enhanced convergence of the normalized LMS algorithm |
US7881459B2 (en) * | 2007-08-15 | 2011-02-01 | Motorola, Inc. | Acoustic echo canceller using multi-band nonlinear processing |
JP5156043B2 (ja) * | 2010-03-26 | 2013-03-06 | 株式会社東芝 | 音声判別装置 |
JP5788873B2 (ja) * | 2010-05-25 | 2015-10-07 | 日本電気株式会社 | 信号処理方法、情報処理装置、及び信号処理プログラム |
EP3469392A4 (de) * | 2016-06-14 | 2019-12-25 | Raytheon Canada Limited | Erkennung und entfernung von impulsrauschen für radar und kommunikationssysteme |
Family Cites Families (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3787645A (en) * | 1971-05-19 | 1974-01-22 | Nippon Electric Co | Echo canceller having two echo path models |
US4621172A (en) * | 1982-12-22 | 1986-11-04 | Nec Corporation | Fast convergence method and system for echo canceller |
JPS59151546A (ja) * | 1983-02-18 | 1984-08-30 | Nec Corp | 適応形反響消去装置 |
GB8423017D0 (en) * | 1984-09-12 | 1984-10-17 | Plessey Co Plc | Echo canceller |
US4805215A (en) * | 1986-10-01 | 1989-02-14 | Racal Data Communications Inc. | Adaptive echo canceller with sparse dynamically positioned taps |
US4823382A (en) * | 1986-10-01 | 1989-04-18 | Racal Data Communications Inc. | Echo canceller with dynamically positioned adaptive filter taps |
US4918727A (en) * | 1988-06-09 | 1990-04-17 | Tellabs Incorporated | Double talk detector for echo canceller and method |
GB2237483A (en) | 1989-10-11 | 1991-05-01 | Plessey Co Plc | An adaptive fir filter having restricted coefficient ranges |
US5148427A (en) * | 1990-04-10 | 1992-09-15 | Level One Communications, Inc. | Non-linear echo canceller |
CA2060667C (en) * | 1992-02-05 | 1998-12-08 | Paul Marc Yatrou | Adaptive sparse echo canceller using a sub-rate filter for active tap selection |
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 |
JP2581458B2 (ja) * | 1994-06-15 | 1997-02-12 | 日本電気株式会社 | アダプティブフィルタの適応化方法及び装置 |
US5548642A (en) * | 1994-12-23 | 1996-08-20 | At&T Corp. | Optimization of adaptive filter tap settings for subband acoustic echo cancelers in teleconferencing |
FR2729024A1 (fr) * | 1994-12-30 | 1996-07-05 | Matra Communication | Annuleur d'echo acoustique avec filtrage en sous-bandes |
US5745564A (en) * | 1995-01-26 | 1998-04-28 | Northern Telecom Limited | Echo cancelling arrangement |
US5818945A (en) * | 1995-04-20 | 1998-10-06 | Nippon Telegraph And Telephone | Subband echo cancellation method using projection algorithm |
US5592548A (en) * | 1995-05-31 | 1997-01-07 | Qualcomm Incorporated | System and method for avoiding false convergence in the presence of tones in a time-domain echo cancellation process |
DE69634027T2 (de) * | 1995-08-14 | 2005-12-22 | Nippon Telegraph And Telephone Corp. | Akustischer Teilband-Echokompensator |
US5663955A (en) * | 1995-08-25 | 1997-09-02 | Lucent Technologies Inc. | Echo canceller system with shared coefficient memory |
US5664011A (en) * | 1995-08-25 | 1997-09-02 | Lucent Technologies Inc. | Echo canceller with adaptive and non-adaptive filters |
US5689556A (en) * | 1995-09-15 | 1997-11-18 | Hughes Electronics | Method of detecting narrow-band signals in an echo canceller |
JP3199155B2 (ja) * | 1995-10-18 | 2001-08-13 | 日本電信電話株式会社 | 反響消去装置 |
US5933494A (en) * | 1995-12-07 | 1999-08-03 | Rockwell International Corporation | Echo canceling method and apparatus in a communication device |
US5721782A (en) * | 1996-03-25 | 1998-02-24 | Motorola, Inc. | Partitioned echo canceler utilizing decimation echo location |
US5796819A (en) * | 1996-07-24 | 1998-08-18 | Ericsson Inc. | Echo canceller for non-linear circuits |
US5777910A (en) * | 1996-11-19 | 1998-07-07 | Thomson Multimedia S.A. | Sparse equalization filter adaptive in two dimensions |
US6185300B1 (en) * | 1996-12-31 | 2001-02-06 | Ericsson Inc. | Echo canceler for use in communications system |
US6028929A (en) * | 1997-11-14 | 2000-02-22 | Tellabs Operations, Inc. | Echo canceller employing dual-H architecture having improved non-linear echo path detection |
US6240180B1 (en) * | 1997-11-14 | 2001-05-29 | Tellabs Operations, Inc. | Echo canceller employing dual-H architecture having split adaptive gain settings |
US6031908A (en) * | 1997-11-14 | 2000-02-29 | Tellabs Operations, Inc. | Echo canceller employing dual-H architecture having variable adaptive gain settings |
-
1997
- 1997-11-14 US US08/970,229 patent/US6240180B1/en not_active Expired - Lifetime
-
1998
- 1998-11-13 JP JP2000521637A patent/JP2002502137A/ja active Pending
- 1998-11-13 WO PCT/US1998/024211 patent/WO1999026399A1/en active IP Right Grant
- 1998-11-13 EP EP08018784A patent/EP2019543A1/de not_active Withdrawn
- 1998-11-13 AU AU15858/99A patent/AU743856B2/en not_active Ceased
- 1998-11-13 CA CA002307678A patent/CA2307678A1/en not_active Abandoned
- 1998-11-13 EP EP98960200A patent/EP1060610B1/de not_active Expired - Lifetime
- 1998-11-13 DE DE69840179T patent/DE69840179D1/de not_active Expired - Lifetime
-
2001
- 2001-04-16 US US09/834,718 patent/US6718035B2/en not_active Expired - Lifetime
-
2004
- 2004-02-17 US US10/779,830 patent/US7403610B2/en not_active Expired - Lifetime
-
2008
- 2008-06-24 US US12/145,246 patent/US20090028354A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
EP1060610A4 (de) | 2004-03-03 |
US6718035B2 (en) | 2004-04-06 |
US20090028354A1 (en) | 2009-01-29 |
EP1060610A1 (de) | 2000-12-20 |
JP2002502137A (ja) | 2002-01-22 |
WO1999026399A1 (en) | 1999-05-27 |
US6240180B1 (en) | 2001-05-29 |
US20040161102A1 (en) | 2004-08-19 |
AU1585899A (en) | 1999-06-07 |
CA2307678A1 (en) | 1999-05-27 |
EP2019543A1 (de) | 2009-01-28 |
US20010016041A1 (en) | 2001-08-23 |
US7403610B2 (en) | 2008-07-22 |
AU743856B2 (en) | 2002-02-07 |
EP1060610B1 (de) | 2008-10-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |