JPH0473650B2 - - Google Patents
Info
- Publication number
- JPH0473650B2 JPH0473650B2 JP23673683A JP23673683A JPH0473650B2 JP H0473650 B2 JPH0473650 B2 JP H0473650B2 JP 23673683 A JP23673683 A JP 23673683A JP 23673683 A JP23673683 A JP 23673683A JP H0473650 B2 JPH0473650 B2 JP H0473650B2
- Authority
- JP
- Japan
- Prior art keywords
- tap
- output
- circuit
- coefficient
- polarity
- 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
Links
- 230000005540 biological transmission Effects 0.000 claims description 31
- 238000012937 correction Methods 0.000 claims description 29
- 230000003044 adaptive effect Effects 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 238000002592 echocardiography Methods 0.000 claims description 9
- 230000001934 delay Effects 0.000 claims description 8
- 230000000717 retained effect Effects 0.000 claims description 8
- 230000006978 adaptation Effects 0.000 claims description 7
- 230000004044 response Effects 0.000 claims description 5
- 230000003647 oxidation Effects 0.000 claims 1
- 238000007254 oxidation reaction Methods 0.000 claims 1
- 230000001629 suppression Effects 0.000 description 8
- 238000005070 sampling Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000002457 bidirectional effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008685 targeting Effects 0.000 description 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
- 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)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23673683A JPS60127825A (ja) | 1983-12-15 | 1983-12-15 | エコ−除去方法及び装置 |
US06/679,825 US4707824A (en) | 1983-12-15 | 1984-12-10 | Method and apparatus for cancelling echo |
EP84115339A EP0145022B1 (en) | 1983-12-15 | 1984-12-13 | Method and apparatus for cancelling echo |
DE8484115339T DE3478176D1 (en) | 1983-12-15 | 1984-12-13 | Method and apparatus for cancelling echo |
CA000470142A CA1225130A (en) | 1983-12-15 | 1984-12-14 | Method and apparatus for cancelling echo |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23673683A JPS60127825A (ja) | 1983-12-15 | 1983-12-15 | エコ−除去方法及び装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS60127825A JPS60127825A (ja) | 1985-07-08 |
JPH0473650B2 true JPH0473650B2 (ko) | 1992-11-24 |
Family
ID=17005021
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23673683A Granted JPS60127825A (ja) | 1983-12-15 | 1983-12-15 | エコ−除去方法及び装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60127825A (ko) |
-
1983
- 1983-12-15 JP JP23673683A patent/JPS60127825A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS60127825A (ja) | 1985-07-08 |
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