JPS58114555A - ハウリング防止装置 - Google Patents
ハウリング防止装置Info
- Publication number
- JPS58114555A JPS58114555A JP20967281A JP20967281A JPS58114555A JP S58114555 A JPS58114555 A JP S58114555A JP 20967281 A JP20967281 A JP 20967281A JP 20967281 A JP20967281 A JP 20967281A JP S58114555 A JPS58114555 A JP S58114555A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- temperature
- acoustic path
- pseudo
- delay time
- 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.)
- Granted
Links
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 230000002265 prevention Effects 0.000 claims description 10
- 230000001934 delay Effects 0.000 claims description 2
- 230000005236 sound signal Effects 0.000 abstract description 3
- 230000003111 delayed effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 8
- 238000012937 correction Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000007423 decrease Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 2
- FBOUIAKEJMZPQG-AWNIVKPZSA-N (1E)-1-(2,4-dichlorophenyl)-4,4-dimethyl-2-(1,2,4-triazol-1-yl)pent-1-en-3-ol Chemical compound C1=NC=NN1/C(C(O)C(C)(C)C)=C/C1=CC=C(Cl)C=C1Cl FBOUIAKEJMZPQG-AWNIVKPZSA-N 0.000 description 1
- 244000171726 Scotch broom Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
Classifications
-
- 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)
- Circuit For Audible Band Transducer (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20967281A JPS58114555A (ja) | 1981-12-28 | 1981-12-28 | ハウリング防止装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20967281A JPS58114555A (ja) | 1981-12-28 | 1981-12-28 | ハウリング防止装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS58114555A true JPS58114555A (ja) | 1983-07-07 |
JPS634986B2 JPS634986B2 (enrdf_load_stackoverflow) | 1988-02-01 |
Family
ID=16576689
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20967281A Granted JPS58114555A (ja) | 1981-12-28 | 1981-12-28 | ハウリング防止装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58114555A (enrdf_load_stackoverflow) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04277998A (ja) * | 1991-03-05 | 1992-10-02 | Yamaha Corp | ハウリングキャンセル装置 |
US5259033A (en) * | 1989-08-30 | 1993-11-02 | Gn Danavox As | Hearing aid having compensation for acoustic feedback |
WO2004086814A1 (ja) * | 2003-03-25 | 2004-10-07 | Nap Enterprise Co., Ltd. | エコー防止回路 |
WO2010115972A1 (fr) * | 2009-04-09 | 2010-10-14 | Centre Scientifique Et Technique Du Batiment | Dispositif electroacoustique destine notamment a une salle de concert |
-
1981
- 1981-12-28 JP JP20967281A patent/JPS58114555A/ja active Granted
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5259033A (en) * | 1989-08-30 | 1993-11-02 | Gn Danavox As | Hearing aid having compensation for acoustic feedback |
JPH04277998A (ja) * | 1991-03-05 | 1992-10-02 | Yamaha Corp | ハウリングキャンセル装置 |
WO2004086814A1 (ja) * | 2003-03-25 | 2004-10-07 | Nap Enterprise Co., Ltd. | エコー防止回路 |
WO2010115972A1 (fr) * | 2009-04-09 | 2010-10-14 | Centre Scientifique Et Technique Du Batiment | Dispositif electroacoustique destine notamment a une salle de concert |
FR2944375A1 (fr) * | 2009-04-09 | 2010-10-15 | Ct Scient Tech Batiment Cstb | Dispositif electroacoustique destine notamment a une salle de concert |
FR2944374A1 (fr) * | 2009-04-09 | 2010-10-15 | Ct Scient Tech Batiment Cstb | Dispositif electroacoustique destine notamment a une salle de concert |
JP2012523730A (ja) * | 2009-04-09 | 2012-10-04 | センター サイエンティフィク エ テクニック デュ バチメント | 特に、コンサートホールのための電気音響装置 |
Also Published As
Publication number | Publication date |
---|---|
JPS634986B2 (enrdf_load_stackoverflow) | 1988-02-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5646990A (en) | Efficient speakerphone anti-howling system | |
US5657384A (en) | Full duplex speakerphone | |
EP0491430B1 (en) | Echo canceller with improved doubletalk detection | |
EP0204718B1 (en) | Full duplex speakerphone for radio and landline telephones | |
US5099472A (en) | Hands free telecommunication apparatus and method | |
US4912758A (en) | Full-duplex digital speakerphone | |
US4984265A (en) | Device for forming the hands-free function in a telephone set, associating the gain switching and echo suppression functions | |
US5612996A (en) | Loop gain processing system for speakerphone applications | |
KR20020071967A (ko) | 반향 제거 장치를 구현하는 개선된 시스템 및 방법 | |
US6385176B1 (en) | Communication system based on echo canceler tap profile | |
US11468873B2 (en) | Gradual reset of filter coefficients in an adaptive noise cancellation system | |
JPS59193660A (ja) | 会議電話装置 | |
US7003096B2 (en) | Full duplex telephone set using echo cancellation and side tone management for high gain stability | |
KR900011322A (ko) | 보이스 스위치형 스피커폰용 음향 보정 장치 | |
JP4189042B2 (ja) | 拡声通話機 | |
JPS634985B2 (enrdf_load_stackoverflow) | ||
US6608897B1 (en) | Double-talk insensitive NLMS algorithm | |
JPS58114555A (ja) | ハウリング防止装置 | |
JPS62116025A (ja) | 音響エコー消去装置 | |
JPH0354498B2 (enrdf_load_stackoverflow) | ||
JPS6321199B2 (enrdf_load_stackoverflow) | ||
JPS62120734A (ja) | 反響消去装置 | |
JP3345939B2 (ja) | エコー・キャンセラにおけるノンリニア・プロセッサの制御方法 | |
JPH03109828A (ja) | 平坦遅延長計測方法および装置、反響消去装置ならびに電話端末 | |
JPS6218836A (ja) | ハウリング抑圧回路 |