SE8205841D0 - Ekoeliminator - Google Patents
EkoeliminatorInfo
- Publication number
- SE8205841D0 SE8205841D0 SE8205841A SE8205841A SE8205841D0 SE 8205841 D0 SE8205841 D0 SE 8205841D0 SE 8205841 A SE8205841 A SE 8205841A SE 8205841 A SE8205841 A SE 8205841A SE 8205841 D0 SE8205841 D0 SE 8205841D0
- Authority
- SE
- Sweden
- Prior art keywords
- echo
- signal
- generating means
- preliminary
- echo replica
- 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
-
- 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
- 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
- H04B3/238—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 initial training sequence
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Radio Relay Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US31435381A | 1981-10-23 | 1981-10-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
SE8205841D0 true SE8205841D0 (sv) | 1982-10-14 |
SE8205841L SE8205841L (sv) | 1983-04-24 |
Family
ID=23219622
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8205841A SE8205841L (sv) | 1981-10-23 | 1982-10-14 | Ekoeliminator |
Country Status (8)
Country | Link |
---|---|
JP (1) | JPS5881345A (sv) |
KR (1) | KR840002178A (sv) |
AU (1) | AU8965582A (sv) |
DE (1) | DE3238550A1 (sv) |
FR (1) | FR2515453A1 (sv) |
GB (1) | GB2109208A (sv) |
NL (1) | NL8204100A (sv) |
SE (1) | SE8205841L (sv) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1186764A (en) * | 1982-06-23 | 1985-05-07 | Akira Kanemasa | Echo canceler |
EP0117626A3 (en) * | 1983-02-04 | 1985-12-18 | Western Electric Company, Incorporated | Improvements in or relating to adaptive filter arrangements |
GB8423017D0 (en) * | 1984-09-12 | 1984-10-17 | Plessey Co Plc | Echo canceller |
CA1238381A (en) * | 1985-03-14 | 1988-06-21 | Ephraim Arnon | Multi-stage echo canceller |
US4868874A (en) * | 1986-04-18 | 1989-09-19 | Hitachi, Ltd. | Echo canceller |
US5471527A (en) | 1993-12-02 | 1995-11-28 | Dsc Communications Corporation | Voice enhancement system and method |
KR100586586B1 (ko) * | 1999-12-18 | 2006-06-02 | 주식회사 케이티 | 간섭제거 가중치 가변방법 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 | |
US4057696A (en) * | 1976-08-09 | 1977-11-08 | Bell Telephone Laboratories, Incorporated | Recursive-like adaptive echo canceller |
DE3070399D1 (en) * | 1980-12-06 | 1985-05-02 | Communications Satellite Corp | Improved double talk detector for echo cancellers |
-
1982
- 1982-10-14 SE SE8205841A patent/SE8205841L/sv not_active Application Discontinuation
- 1982-10-18 DE DE19823238550 patent/DE3238550A1/de not_active Withdrawn
- 1982-10-18 FR FR8217372A patent/FR2515453A1/fr not_active Withdrawn
- 1982-10-20 GB GB08229957A patent/GB2109208A/en not_active Withdrawn
- 1982-10-21 KR KR1019820004731A patent/KR840002178A/ko unknown
- 1982-10-21 AU AU89655/82A patent/AU8965582A/en not_active Abandoned
- 1982-10-22 NL NL8204100A patent/NL8204100A/nl not_active Application Discontinuation
- 1982-10-23 JP JP57185392A patent/JPS5881345A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
AU8965582A (en) | 1983-04-28 |
GB2109208A (en) | 1983-05-25 |
SE8205841L (sv) | 1983-04-24 |
FR2515453A1 (fr) | 1983-04-29 |
NL8204100A (nl) | 1983-05-16 |
KR840002178A (ko) | 1984-06-11 |
JPS5881345A (ja) | 1983-05-16 |
DE3238550A1 (de) | 1983-06-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAV | Patent application has lapsed |
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