JP4522497B2 - デジタル電話システムの機能素子を制御するために状態決定を使用する方法および装置 - Google Patents
デジタル電話システムの機能素子を制御するために状態決定を使用する方法および装置 Download PDFInfo
- Publication number
- JP4522497B2 JP4522497B2 JP53293598A JP53293598A JP4522497B2 JP 4522497 B2 JP4522497 B2 JP 4522497B2 JP 53293598 A JP53293598 A JP 53293598A JP 53293598 A JP53293598 A JP 53293598A JP 4522497 B2 JP4522497 B2 JP 4522497B2
- Authority
- JP
- Japan
- Prior art keywords
- echo canceller
- information signal
- echo
- signal
- state
- 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
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000003044 adaptive effect Effects 0.000 claims abstract description 17
- 238000012545 processing Methods 0.000 claims description 37
- 230000001629 suppression Effects 0.000 claims description 17
- 230000005236 sound signal Effects 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 10
- 238000004364 calculation method Methods 0.000 claims description 8
- 230000004044 response Effects 0.000 claims description 8
- 230000003595 spectral effect Effects 0.000 claims description 6
- 230000002829 reductive effect Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 abstract description 18
- 230000000694 effects Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 11
- 238000002592 echocardiography Methods 0.000 description 7
- 230000007246 mechanism Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000012805 post-processing Methods 0.000 description 4
- 230000001413 cellular effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 206010019133 Hangover Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 210000001260 vocal cord Anatomy 0.000 description 1
- 230000001755 vocal effect Effects 0.000 description 1
Images
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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Facsimile Transmission Control (AREA)
- Exchange Systems With Centralized Control (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/834,397 US5920834A (en) | 1997-01-31 | 1997-01-31 | Echo canceller with talk state determination to control speech processor functional elements in a digital telephone system |
| US834,397 | 1997-01-31 | ||
| PCT/US1998/001057 WO1998034354A1 (en) | 1997-01-31 | 1998-01-27 | Method and apparatus for using state determination to control functional elements in digital telephone systems |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2001510655A JP2001510655A (ja) | 2001-07-31 |
| JP2001510655A5 JP2001510655A5 (enExample) | 2005-09-08 |
| JP4522497B2 true JP4522497B2 (ja) | 2010-08-11 |
Family
ID=25266838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53293598A Expired - Lifetime JP4522497B2 (ja) | 1997-01-31 | 1998-01-27 | デジタル電話システムの機能素子を制御するために状態決定を使用する方法および装置 |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US5920834A (enExample) |
| EP (1) | EP0956658B1 (enExample) |
| JP (1) | JP4522497B2 (enExample) |
| KR (1) | KR20000070686A (enExample) |
| CN (1) | CN1218506C (enExample) |
| AT (1) | ATE389977T1 (enExample) |
| AU (1) | AU5962498A (enExample) |
| CA (1) | CA2278928A1 (enExample) |
| DE (1) | DE69839260T2 (enExample) |
| TW (1) | TW370747B (enExample) |
| WO (1) | WO1998034354A1 (enExample) |
| ZA (1) | ZA98761B (enExample) |
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1997
- 1997-01-31 US US08/834,397 patent/US5920834A/en not_active Expired - Lifetime
-
1998
- 1998-01-27 CN CN988031248A patent/CN1218506C/zh not_active Expired - Lifetime
- 1998-01-27 AT AT98902823T patent/ATE389977T1/de not_active IP Right Cessation
- 1998-01-27 JP JP53293598A patent/JP4522497B2/ja not_active Expired - Lifetime
- 1998-01-27 KR KR1019997006935A patent/KR20000070686A/ko not_active Ceased
- 1998-01-27 CA CA002278928A patent/CA2278928A1/en not_active Abandoned
- 1998-01-27 DE DE69839260T patent/DE69839260T2/de not_active Expired - Lifetime
- 1998-01-27 EP EP98902823A patent/EP0956658B1/en not_active Expired - Lifetime
- 1998-01-27 WO PCT/US1998/001057 patent/WO1998034354A1/en not_active Ceased
- 1998-01-27 AU AU59624/98A patent/AU5962498A/en not_active Abandoned
- 1998-01-29 ZA ZA98761A patent/ZA98761B/xx unknown
- 1998-05-05 TW TW087101103A patent/TW370747B/zh not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE69839260T2 (de) | 2009-04-16 |
| KR20000070686A (ko) | 2000-11-25 |
| CN1218506C (zh) | 2005-09-07 |
| EP0956658B1 (en) | 2008-03-19 |
| ZA98761B (en) | 1998-08-17 |
| ATE389977T1 (de) | 2008-04-15 |
| CA2278928A1 (en) | 1998-08-06 |
| JP2001510655A (ja) | 2001-07-31 |
| AU5962498A (en) | 1998-08-25 |
| DE69839260D1 (de) | 2008-04-30 |
| EP0956658A1 (en) | 1999-11-17 |
| CN1249869A (zh) | 2000-04-05 |
| US5920834A (en) | 1999-07-06 |
| TW370747B (en) | 1999-09-21 |
| WO1998034354A1 (en) | 1998-08-06 |
| HK1025196A1 (en) | 2000-11-03 |
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