CN1168204A - 通信***中噪声抑制方法及装置 - Google Patents
通信***中噪声抑制方法及装置 Download PDFInfo
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- CN1168204A CN1168204A CN96191426A CN96191426A CN1168204A CN 1168204 A CN1168204 A CN 1168204A CN 96191426 A CN96191426 A CN 96191426A CN 96191426 A CN96191426 A CN 96191426A CN 1168204 A CN1168204 A CN 1168204A
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Images
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B15/00—Suppression or limitation of noise or interference
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Computational Linguistics (AREA)
- Quality & Reliability (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
- Noise Elimination (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
Description
update_flag=FALSE; if(v(m)<=UPDATE_THLD){ update_flag=TRUE update_cnt=0 }
else if((Etot(m)>NOISE_FLOOR_DB)and(ΔE(m)<DEV_THLD)){ update_cnt=update_cnt+1 if(update_cnt>+UPDATE_CNT_THLD) update_flag=TRUE }
if(update_cnt==last_update_cnt) hyster_cnt+1 else hyster_cnt=0 last_update_cnt=update_cnt if(hyster_cnt>HYSTER_CNT_THLD) update_cnt=0
index_cnt=0 for(i=NM to Nc-1step1){ if(σq(i)≥INDEX_THLD) index_cnt=index_cnt+1 } if(index_cnt<INDEX_CNT_THLD) modify_flag=TRUE else modify_flag=FALSE <dp n="d12"/> if(modify_flag==TRUE) for(i=O to Nc-1 step1) if((υ(m)≤METRIC_THLD)or(σq(i)≤SETBACK_THLD)) σ′q(j)=1 else σ′q(j)=σq(i) else {σ′q}={σq}
for(i=O to Nc-1step1) if(σ′q(i)<σth) σ″q(j)=σth else σ″q(j)=σ′q(i)
Claims (31)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/556,358 | 1995-11-13 | ||
US08/556,358 US5659622A (en) | 1995-11-13 | 1995-11-13 | Method and apparatus for suppressing noise in a communication system |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1168204A true CN1168204A (zh) | 1997-12-17 |
CN1075692C CN1075692C (zh) | 2001-11-28 |
Family
ID=24221022
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN96191426A Expired - Lifetime CN1075692C (zh) | 1995-11-13 | 1996-09-04 | 通信***中噪声抑制方法及装置 |
Country Status (17)
Country | Link |
---|---|
US (1) | US5659622A (zh) |
JP (1) | JP3842821B2 (zh) |
KR (1) | KR100286719B1 (zh) |
CN (1) | CN1075692C (zh) |
AU (1) | AU689403B2 (zh) |
BR (1) | BR9607249A (zh) |
CA (1) | CA2203917C (zh) |
DE (1) | DE19681070C2 (zh) |
FI (1) | FI115582B (zh) |
FR (1) | FR2741217B1 (zh) |
GB (1) | GB2313266B (zh) |
HK (1) | HK1005112A1 (zh) |
HU (1) | HU219255B (zh) |
IL (1) | IL119226A (zh) |
RU (1) | RU2169992C2 (zh) |
SE (1) | SE521679C2 (zh) |
WO (1) | WO1997018647A1 (zh) |
Cited By (7)
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CN100361401C (zh) * | 2005-02-16 | 2008-01-09 | 乐金电子(中国)研究开发中心有限公司 | 移动通信终端中的信号噪声比改进方法及其移动通信终端 |
CN100414606C (zh) * | 2002-01-25 | 2008-08-27 | Nxp股份有限公司 | 用于从pcm信号中减去量化噪声的方法和单元 |
CN101053161B (zh) * | 2004-11-02 | 2010-09-08 | 松下电器产业株式会社 | 噪声抑制装置 |
CN101248360B (zh) * | 2005-08-22 | 2010-09-22 | 摩托罗拉公司 | 用于管理通信链路的方法和装置 |
CN101889432A (zh) * | 2007-12-07 | 2010-11-17 | 艾格瑞***有限公司 | 处于保持时的音乐的终端用户控制 |
CN109643552A (zh) * | 2016-09-09 | 2019-04-16 | 大陆汽车***公司 | 用于可变噪声状况中语音增强的鲁棒噪声估计 |
CN111418004A (zh) * | 2018-06-11 | 2020-07-14 | 思睿逻辑国际半导体有限公司 | 用于啸叫检测的技术 |
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IN184794B (zh) * | 1993-09-14 | 2000-09-30 | British Telecomm | |
SE505156C2 (sv) * | 1995-01-30 | 1997-07-07 | Ericsson Telefon Ab L M | Förfarande för bullerundertryckning genom spektral subtraktion |
FI100840B (fi) * | 1995-12-12 | 1998-02-27 | Nokia Mobile Phones Ltd | Kohinanvaimennin ja menetelmä taustakohinan vaimentamiseksi kohinaises ta puheesta sekä matkaviestin |
US5881091A (en) * | 1996-02-05 | 1999-03-09 | Hewlett-Packard Company | Spread spectrum linearization for digitizing receivers |
JPH09326844A (ja) * | 1996-06-03 | 1997-12-16 | Mitsubishi Electric Corp | 騒音低減通話装置及び騒音低減通話方法 |
KR100250561B1 (ko) | 1996-08-29 | 2000-04-01 | 니시무로 타이죠 | 잡음소거기 및 이 잡음소거기를 사용한 통신장치 |
US5937377A (en) * | 1997-02-19 | 1999-08-10 | Sony Corporation | Method and apparatus for utilizing noise reducer to implement voice gain control and equalization |
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1995
- 1995-11-13 US US08/556,358 patent/US5659622A/en not_active Expired - Lifetime
-
1996
- 1996-09-04 CA CA002203917A patent/CA2203917C/en not_active Expired - Lifetime
- 1996-09-04 HU HU9800843A patent/HU219255B/hu unknown
- 1996-09-04 WO PCT/US1996/014270 patent/WO1997018647A1/en active IP Right Grant
- 1996-09-04 RU RU97113483/09A patent/RU2169992C2/ru active
- 1996-09-04 JP JP51882097A patent/JP3842821B2/ja not_active Expired - Fee Related
- 1996-09-04 CN CN96191426A patent/CN1075692C/zh not_active Expired - Lifetime
- 1996-09-04 BR BR9607249A patent/BR9607249A/pt not_active IP Right Cessation
- 1996-09-04 KR KR1019970704788A patent/KR100286719B1/ko not_active IP Right Cessation
- 1996-09-04 DE DE19681070T patent/DE19681070C2/de not_active Expired - Lifetime
- 1996-09-04 AU AU17584/97A patent/AU689403B2/en not_active Expired
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- 1996-09-09 IL IL11922696A patent/IL119226A/xx not_active IP Right Cessation
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- 1997-07-03 FI FI972852A patent/FI115582B/fi not_active IP Right Cessation
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
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CN100414606C (zh) * | 2002-01-25 | 2008-08-27 | Nxp股份有限公司 | 用于从pcm信号中减去量化噪声的方法和单元 |
CN101053161B (zh) * | 2004-11-02 | 2010-09-08 | 松下电器产业株式会社 | 噪声抑制装置 |
CN100361401C (zh) * | 2005-02-16 | 2008-01-09 | 乐金电子(中国)研究开发中心有限公司 | 移动通信终端中的信号噪声比改进方法及其移动通信终端 |
CN101248360B (zh) * | 2005-08-22 | 2010-09-22 | 摩托罗拉公司 | 用于管理通信链路的方法和装置 |
CN101889432A (zh) * | 2007-12-07 | 2010-11-17 | 艾格瑞***有限公司 | 处于保持时的音乐的终端用户控制 |
CN101889432B (zh) * | 2007-12-07 | 2013-12-11 | 艾格瑞***有限公司 | 处于保持时的音乐的终端用户控制 |
CN109643552A (zh) * | 2016-09-09 | 2019-04-16 | 大陆汽车***公司 | 用于可变噪声状况中语音增强的鲁棒噪声估计 |
CN111418004A (zh) * | 2018-06-11 | 2020-07-14 | 思睿逻辑国际半导体有限公司 | 用于啸叫检测的技术 |
CN111418004B (zh) * | 2018-06-11 | 2023-12-22 | 思睿逻辑国际半导体有限公司 | 用于啸叫检测的技术 |
Also Published As
Publication number | Publication date |
---|---|
KR100286719B1 (ko) | 2001-04-16 |
IL119226A0 (en) | 1996-12-05 |
FI972852A0 (fi) | 1997-07-03 |
CN1075692C (zh) | 2001-11-28 |
JP3842821B2 (ja) | 2006-11-08 |
AU689403B2 (en) | 1998-03-26 |
HU219255B (en) | 2001-03-28 |
RU2169992C2 (ru) | 2001-06-27 |
HUP9800843A3 (en) | 1999-03-29 |
SE9701659D0 (sv) | 1997-05-02 |
HK1005112A1 (en) | 1998-12-24 |
KR19980701399A (ko) | 1998-05-15 |
SE9701659L (sv) | 1997-09-12 |
GB9713727D0 (en) | 1997-09-03 |
FI972852A (fi) | 1997-07-03 |
FR2741217A1 (fr) | 1997-05-16 |
WO1997018647A1 (en) | 1997-05-22 |
CA2203917C (en) | 2000-06-27 |
CA2203917A1 (en) | 1997-05-14 |
GB2313266B (en) | 2000-01-26 |
IL119226A (en) | 2000-10-31 |
FI115582B (fi) | 2005-05-31 |
AU1758497A (en) | 1997-06-05 |
FR2741217B1 (fr) | 2004-08-20 |
SE521679C2 (sv) | 2003-11-25 |
GB2313266A (en) | 1997-11-19 |
US5659622A (en) | 1997-08-19 |
HUP9800843A2 (hu) | 1998-07-28 |
DE19681070T1 (de) | 1998-02-26 |
BR9607249A (pt) | 1997-12-30 |
DE19681070C2 (de) | 2002-10-24 |
JPH10513030A (ja) | 1998-12-08 |
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