ATE503343T1 - Verfahren und vorrichtung zur echounterdrückung - Google Patents
Verfahren und vorrichtung zur echounterdrückungInfo
- Publication number
- ATE503343T1 ATE503343T1 AT04739745T AT04739745T ATE503343T1 AT E503343 T1 ATE503343 T1 AT E503343T1 AT 04739745 T AT04739745 T AT 04739745T AT 04739745 T AT04739745 T AT 04739745T AT E503343 T1 ATE503343 T1 AT E503343T1
- Authority
- AT
- Austria
- Prior art keywords
- signal
- communication device
- microphone
- speaker
- diffused
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 3
- 230000001629 suppression Effects 0.000 title 1
- 238000004590 computer program Methods 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
Classifications
-
- 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
- H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
- H04M3/567—Multimedia conference systems
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/002—Applications of echo suppressors or cancellers in telephonic connections
-
- 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
- H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
- H04M3/568—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities audio processing specific to telephonic conferencing, e.g. spatial distribution, mixing of participants
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Circuit For Audible Band Transducer (AREA)
- Telephonic Communication Services (AREA)
- Telephone Function (AREA)
- Paper (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0307167A FR2856183A1 (fr) | 2003-06-13 | 2003-06-13 | Procede et dispositif de traitement d'echo |
| PCT/EP2004/006239 WO2004112370A1 (fr) | 2003-06-13 | 2004-06-08 | Procede et dispositif de traitement d’echo |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ATE503343T1 true ATE503343T1 (de) | 2011-04-15 |
Family
ID=33484433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT04739745T ATE503343T1 (de) | 2003-06-13 | 2004-06-08 | Verfahren und vorrichtung zur echounterdrückung |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7672446B2 (de) |
| EP (1) | EP1634435B1 (de) |
| AT (1) | ATE503343T1 (de) |
| DE (1) | DE602004031940D1 (de) |
| FR (1) | FR2856183A1 (de) |
| WO (1) | WO2004112370A1 (de) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8630426B2 (en) * | 2009-11-06 | 2014-01-14 | Motorola Solutions, Inc. | Howling suppression using echo cancellation |
| EP2490460B1 (de) * | 2011-02-18 | 2013-11-20 | Gigaset Communications GmbH | Akustische Feedbackunterdrückung für Kommunikationsendgeräte |
| US9232071B2 (en) | 2011-12-16 | 2016-01-05 | Qualcomm Incorporated | Optimizing audio processing functions by dynamically compensating for variable distances between speaker(s) and microphone(s) in a mobile device |
| US9654609B2 (en) | 2011-12-16 | 2017-05-16 | Qualcomm Incorporated | Optimizing audio processing functions by dynamically compensating for variable distances between speaker(s) and microphone(s) in an accessory device |
| US9667284B1 (en) * | 2016-03-08 | 2017-05-30 | Motorola Solutions, Inc. | Method, device, and system for identifying a howling source and suppressing howling |
| US10284728B1 (en) | 2018-02-21 | 2019-05-07 | Motorola Solutions, Inc. | Adaptive proximity thresholds for dynamic howling suppression |
| US10154149B1 (en) * | 2018-03-15 | 2018-12-11 | Motorola Solutions, Inc. | Audio framework extension for acoustic feedback suppression |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6496581B1 (en) * | 1997-09-11 | 2002-12-17 | Digisonix, Inc. | Coupled acoustic echo cancellation system |
| US20020071573A1 (en) | 1997-09-11 | 2002-06-13 | Finn Brian M. | DVE system with customized equalization |
| GB2350969B (en) * | 1999-06-07 | 2003-11-05 | Ericsson Telefon Ab L M | Loudspeaker volume range control |
| EP1413167A2 (de) * | 2001-07-20 | 2004-04-28 | Koninklijke Philips Electronics N.V. | Schallverstärkungsystem mit multimikrofon echounterdrücker als postprozessor |
| DE10153188C2 (de) | 2001-10-27 | 2003-08-21 | Grundig Ag I Ins | Vorrichtung und Verfahren zur mehrkanaligen akustischen Echokompensation mit variabler Kanalzahl |
| US6961422B2 (en) * | 2001-12-28 | 2005-11-01 | Avaya Technology Corp. | Gain control method for acoustic echo cancellation and suppression |
| US6937723B2 (en) * | 2002-10-25 | 2005-08-30 | Avaya Technology Corp. | Echo detection and monitoring |
-
2003
- 2003-06-13 FR FR0307167A patent/FR2856183A1/fr active Pending
-
2004
- 2004-06-08 EP EP04739745A patent/EP1634435B1/de not_active Expired - Lifetime
- 2004-06-08 DE DE602004031940T patent/DE602004031940D1/de not_active Expired - Lifetime
- 2004-06-08 US US10/560,523 patent/US7672446B2/en not_active Expired - Fee Related
- 2004-06-08 AT AT04739745T patent/ATE503343T1/de not_active IP Right Cessation
- 2004-06-08 WO PCT/EP2004/006239 patent/WO2004112370A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| US7672446B2 (en) | 2010-03-02 |
| DE602004031940D1 (de) | 2011-05-05 |
| WO2004112370A1 (fr) | 2004-12-23 |
| FR2856183A1 (fr) | 2004-12-17 |
| EP1634435A1 (de) | 2006-03-15 |
| EP1634435B1 (de) | 2011-03-23 |
| US20060177045A1 (en) | 2006-08-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RER | Ceased as to paragraph 5 lit. 3 law introducing patent treaties |