ATA309387A - METHOD FOR ADAPTIVELY COMPENSATING AN ECHO IN A COMMUNICATION DEVICE - Google Patents
METHOD FOR ADAPTIVELY COMPENSATING AN ECHO IN A COMMUNICATION DEVICEInfo
- Publication number
- ATA309387A ATA309387A AT309387A AT309387A ATA309387A AT A309387 A ATA309387 A AT A309387A AT 309387 A AT309387 A AT 309387A AT 309387 A AT309387 A AT 309387A AT A309387 A ATA309387 A AT A309387A
- Authority
- AT
- Austria
- Prior art keywords
- echo
- communication device
- adaptively compensating
- adaptively
- compensating
- Prior art date
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
- 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
- H04B3/231—Echo cancellers using readout of a memory to provide the echo replica
-
- 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
- H04B3/237—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 using two adaptive filters, e.g. for near end and for end echo cancelling
-
- 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)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT309387A AT391784B (en) | 1987-11-25 | 1987-11-25 | METHOD FOR ADAPTIVELY COMPENSATING AN ECHO IN A COMMUNICATION DEVICE |
PCT/EP1988/001061 WO1989005068A1 (en) | 1987-11-25 | 1988-11-23 | Process for adaptive compensation of echoes in a communication system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT309387A AT391784B (en) | 1987-11-25 | 1987-11-25 | METHOD FOR ADAPTIVELY COMPENSATING AN ECHO IN A COMMUNICATION DEVICE |
Publications (2)
Publication Number | Publication Date |
---|---|
ATA309387A true ATA309387A (en) | 1990-05-15 |
AT391784B AT391784B (en) | 1990-11-26 |
Family
ID=3545211
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT309387A AT391784B (en) | 1987-11-25 | 1987-11-25 | METHOD FOR ADAPTIVELY COMPENSATING AN ECHO IN A COMMUNICATION DEVICE |
Country Status (2)
Country | Link |
---|---|
AT (1) | AT391784B (en) |
WO (1) | WO1989005068A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1991012683A1 (en) * | 1990-02-16 | 1991-08-22 | Fujitsu Limited | Speaking device having hand-free conversational function |
US5457684A (en) * | 1993-12-21 | 1995-10-10 | At&T Ipm Corp. | Delay-less signal processing arrangement for use in an ATM network |
ES2101633B1 (en) * | 1994-05-31 | 1998-03-01 | Alcatel Standard Electrica | FIXED CELL PHONE TERMINAL FOR TWO-WIRE TELECOMMUNICATION SERVICES. |
DE4430189A1 (en) * | 1994-08-25 | 1996-02-29 | Sel Alcatel Ag | Adaptive echo cancellation method |
US5646990A (en) * | 1995-09-21 | 1997-07-08 | Rockwell International Corporation | Efficient speakerphone anti-howling system |
JPH09289474A (en) * | 1996-04-23 | 1997-11-04 | Saitama Nippon Denki Kk | Hand-free speaking device |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2412210A1 (en) * | 1977-12-14 | 1979-07-13 | Cit Alcatel | SPEAKER TELEPHONE STATION |
US4243959A (en) * | 1979-06-21 | 1981-01-06 | Bell Telephone Laboratories, Incorporated | Adaptive filter with tap coefficient leakage |
US4629829A (en) * | 1984-12-14 | 1986-12-16 | Motorola, Inc. | Full duplex speakerphone for radio and landline telephones |
DE3768975D1 (en) * | 1986-01-30 | 1991-05-08 | Siemens Ag | Echo compensator. |
-
1987
- 1987-11-25 AT AT309387A patent/AT391784B/en not_active IP Right Cessation
-
1988
- 1988-11-23 WO PCT/EP1988/001061 patent/WO1989005068A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
AT391784B (en) | 1990-11-26 |
WO1989005068A1 (en) | 1989-06-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69327709D1 (en) | Method for acoustic position indication for visible objects | |
DE69117351D1 (en) | Method for determining the quality of a crimp connection | |
DE69413067D1 (en) | METHOD AND DEVICE FOR DETERMINING THE DIRECTION OF AN ERROR ON AN ENERGY TRANSMISSION LINE | |
DE59001151D1 (en) | METHOD FOR REGULATING A CROSS-DYNAMIC STATE SIZE OF A MOTOR VEHICLE. | |
DE3584701D1 (en) | METHOD FOR DISPLAYING AN IMAGE. | |
DE68922471D1 (en) | Method and device for determining a reference point on a gradation correction curve. | |
DE59107288D1 (en) | METHOD FOR CALIBRATING A THICKNESS MEASURING DEVICE | |
DE3862814D1 (en) | METHOD FOR CONNECTING A PIPELINE TO AN UNDERWATER CONSTRUCTION STRUCTURE AND A DEVICE FOR CONNECTING A PIPELINE END TO AN UNDERWATER CONSTRUCTION STRUCTURE. | |
DE3481547D1 (en) | METHOD FOR CALIBRATING A REFLECTOMETER. | |
AU621017B2 (en) | Training method for an echo canceller for use in a voice conference system | |
DE3484136D1 (en) | METHOD FOR IMPLEMENTING A BITCARD OF AN IMAGE IN A RUNNING OR RUNNING DISPLAY. | |
DE68908903D1 (en) | Method of attaching an element to a board. | |
DE59002285D1 (en) | METHOD FOR TESTING A HAEMODIALYSIS MEMBRANE. | |
DE69021048D1 (en) | Procedure for determining a collision using an observer. | |
DE3870906D1 (en) | METHOD FOR PRETREATING A WATER SUSPENSION PHOSPHOR. | |
DE3751457D1 (en) | Procedure for establishing a marine structure. | |
DE3887784D1 (en) | Procedure for testing a network structure. | |
AT383290B (en) | METHOD FOR LIQUID FOAM APPLICATION USING AN APPLICATION DEVICE | |
DE3855172D1 (en) | Method for preparing a putaway connection Preparing a putaway connection | |
DE3764763D1 (en) | METHOD FOR TOLERANCE COMPENSATION OF A POSITION SIGNAL SIGNAL. | |
DE69016113D1 (en) | Process for inhibiting corrosion in an electronic package. | |
DE59108928D1 (en) | Data transmission method | |
DE69024485D1 (en) | Method for observing a microscopic surface structure | |
AU626410B2 (en) | Training method for an echo canceller for use in a voice conference system | |
ATA309387A (en) | METHOD FOR ADAPTIVELY COMPENSATING AN ECHO IN A COMMUNICATION DEVICE |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ELJ | Ceased due to non-payment of the annual fee |