FI108830B - Menetelmä ja laite kaiun vaimentamiseksi puhelinlaitteessa - Google Patents
Menetelmä ja laite kaiun vaimentamiseksi puhelinlaitteessa Download PDFInfo
- Publication number
- FI108830B FI108830B FI935840A FI935840A FI108830B FI 108830 B FI108830 B FI 108830B FI 935840 A FI935840 A FI 935840A FI 935840 A FI935840 A FI 935840A FI 108830 B FI108830 B FI 108830B
- Authority
- FI
- Finland
- Prior art keywords
- noise
- attenuation
- level
- telephone apparatus
- background noise
- Prior art date
Links
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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Telephone Function (AREA)
- Telephone Set Structure (AREA)
- Fats And Perfumes (AREA)
- Auxiliary Devices For Music (AREA)
- Electrophonic Musical Instruments (AREA)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI935840A FI108830B (fi) | 1993-12-23 | 1993-12-23 | Menetelmä ja laite kaiun vaimentamiseksi puhelinlaitteessa |
US08/359,044 US5715310A (en) | 1993-12-23 | 1994-12-19 | Apparatus and method for echo attenuation |
JP6320824A JPH07221821A (ja) | 1993-12-23 | 1994-12-22 | エコーを減衰するための装置と方法 |
DE69433659T DE69433659T2 (de) | 1993-12-23 | 1994-12-23 | Vorrichtung und Verfahren zur Echo-Dämpfung |
AT94309807T ATE263466T1 (de) | 1993-12-23 | 1994-12-23 | Vorrichtung und verfahren zur echo-dämpfung |
EP94309807A EP0665671B1 (en) | 1993-12-23 | 1994-12-23 | Apparatus and method for echo attenuation |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI935840A FI108830B (fi) | 1993-12-23 | 1993-12-23 | Menetelmä ja laite kaiun vaimentamiseksi puhelinlaitteessa |
FI935840 | 1993-12-23 |
Publications (3)
Publication Number | Publication Date |
---|---|
FI935840A0 FI935840A0 (fi) | 1993-12-23 |
FI935840A FI935840A (fi) | 1995-06-24 |
FI108830B true FI108830B (fi) | 2002-03-28 |
Family
ID=8539177
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI935840A FI108830B (fi) | 1993-12-23 | 1993-12-23 | Menetelmä ja laite kaiun vaimentamiseksi puhelinlaitteessa |
Country Status (6)
Country | Link |
---|---|
US (1) | US5715310A (ja) |
EP (1) | EP0665671B1 (ja) |
JP (1) | JPH07221821A (ja) |
AT (1) | ATE263466T1 (ja) |
DE (1) | DE69433659T2 (ja) |
FI (1) | FI108830B (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07273840A (ja) * | 1994-03-25 | 1995-10-20 | Nec Corp | 音声帯域制御機能を有する移動電話機 |
US5949886A (en) * | 1995-10-26 | 1999-09-07 | Nevins; Ralph J. | Setting a microphone volume level |
EP0847180A1 (en) | 1996-11-27 | 1998-06-10 | Nokia Mobile Phones Ltd. | Double talk detector |
FI104524B (fi) * | 1997-04-18 | 2000-02-15 | Nokia Mobile Phones Ltd | Kaiunpoistojärjestelmä ja -menetelmä sekä matkaviestin |
FI114422B (fi) | 1997-09-04 | 2004-10-15 | Nokia Corp | Lähteen puheaktiviteetin tunnistus |
FR2816791A1 (fr) * | 2000-11-15 | 2002-05-17 | Atlinks | Procede pour limiter les echos dans un poste telephonique a haut parleur et poste telephonique utilisant ce procede |
US20060104460A1 (en) * | 2004-11-18 | 2006-05-18 | Motorola, Inc. | Adaptive time-based noise suppression |
EP1926087A1 (de) * | 2006-11-27 | 2008-05-28 | Siemens Audiologische Technik GmbH | Anpassung einer Hörvorrichtung an ein Sprachsignal |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3889059A (en) * | 1973-03-26 | 1975-06-10 | Northern Electric Co | Loudspeaking communication terminal apparatus and method of operation |
GB2137458B (en) * | 1983-03-01 | 1986-11-19 | Standard Telephones Cables Ltd | Digital handsfree telephone |
US4630304A (en) * | 1985-07-01 | 1986-12-16 | Motorola, Inc. | Automatic background noise estimator for a noise suppression system |
CA1291837C (en) * | 1987-07-15 | 1991-11-05 | Juro Ohga | Electronic telephone terminal having noise suppression function |
CA2001277C (en) * | 1989-10-24 | 1994-07-12 | Bruce Leigh Townsend | Hands free telecommunications apparatus and method |
US5058153A (en) * | 1989-12-27 | 1991-10-15 | Carew Edward C | Noise mitigation and mode switching in communications terminals such as telephones |
JPH04323938A (ja) * | 1991-04-23 | 1992-11-13 | Toshiba Corp | ハンズフリー回路 |
CA2052351C (en) * | 1991-09-27 | 2000-05-23 | Gordon J. Reesor | Telephone handsfree algorithm |
US5357567A (en) * | 1992-08-14 | 1994-10-18 | Motorola, Inc. | Method and apparatus for volume switched gain control |
US5381473A (en) * | 1992-10-29 | 1995-01-10 | Andrea Electronics Corporation | Noise cancellation apparatus |
US5548638A (en) * | 1992-12-21 | 1996-08-20 | Iwatsu Electric Co., Ltd. | Audio teleconferencing apparatus |
US5485522A (en) * | 1993-09-29 | 1996-01-16 | Ericsson Ge Mobile Communications, Inc. | System for adaptively reducing noise in speech signals |
US5485515A (en) * | 1993-12-29 | 1996-01-16 | At&T Corp. | Background noise compensation in a telephone network |
-
1993
- 1993-12-23 FI FI935840A patent/FI108830B/fi not_active IP Right Cessation
-
1994
- 1994-12-19 US US08/359,044 patent/US5715310A/en not_active Expired - Lifetime
- 1994-12-22 JP JP6320824A patent/JPH07221821A/ja active Pending
- 1994-12-23 AT AT94309807T patent/ATE263466T1/de not_active IP Right Cessation
- 1994-12-23 DE DE69433659T patent/DE69433659T2/de not_active Expired - Lifetime
- 1994-12-23 EP EP94309807A patent/EP0665671B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ATE263466T1 (de) | 2004-04-15 |
DE69433659D1 (de) | 2004-05-06 |
FI935840A (fi) | 1995-06-24 |
EP0665671A3 (en) | 1999-04-28 |
JPH07221821A (ja) | 1995-08-18 |
US5715310A (en) | 1998-02-03 |
FI935840A0 (fi) | 1993-12-23 |
EP0665671B1 (en) | 2004-03-31 |
EP0665671A2 (en) | 1995-08-02 |
DE69433659T2 (de) | 2005-02-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR100268319B1 (ko) | 음성 개선 시스템과 그 방법 | |
FI88570B (fi) | Telefonkrets som laemnar haenderna fria | |
KR100273477B1 (ko) | 제3자요금부과에관한방법및장치 | |
FI99062C (fi) | Puhesignaalin taajuuskorjaus matkapuhelimessa | |
JP4699988B2 (ja) | 可聴性の改善 | |
US7881927B1 (en) | Adaptive sidetone and adaptive voice activity detect (VAD) threshold for speech processing | |
CN101262530B (zh) | 一种消除移动终端回音的装置 | |
US6990194B2 (en) | Dynamic balance control for telephone | |
US8363820B1 (en) | Headset with whisper mode feature | |
KR20010033951A (ko) | 통신 시스템에서 에코 억제 제어를 위한 방법 및 장치 | |
FI104524B (fi) | Kaiunpoistojärjestelmä ja -menetelmä sekä matkaviestin | |
JP4204754B2 (ja) | 通信システムにおける適応信号利得制御のための方法及び装置 | |
EP0847180A1 (en) | Double talk detector | |
KR19990076962A (ko) | 음성 증폭 장치 및 방법 | |
KR20010033993A (ko) | 통신 시스템에서 개선된 에코 억제 방법 및 장치 | |
KR20000070686A (ko) | 상태 판정을 이용하여 디지털 전화 시스템에서 기능 요소를 제어하는 방법 및 장치 | |
FI108830B (fi) | Menetelmä ja laite kaiun vaimentamiseksi puhelinlaitteessa | |
US8565414B2 (en) | Distributed VAD control system for telephone | |
KR20010051980A (ko) | 침묵 기간에서의 에코 및 노이즈의 지수적 감소 | |
KR19980086461A (ko) | 핸드 프리 전화기 | |
US20010006511A1 (en) | Process for coordinated echo- and/or noise reduction | |
US20120294437A1 (en) | Automatic gain control for tele-presence voice echo cancellers | |
JP2522737B2 (ja) | 能動帰還抑圧方法 | |
US7065207B2 (en) | Controlling attenuation during echo suppression | |
US20080298577A1 (en) | Method and system for processing communication signals in a communication system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MA | Patent expired |