CA2291826A1 - Dispositif et procede de reduction de bruits - Google Patents
Dispositif et procede de reduction de bruits Download PDFInfo
- Publication number
- CA2291826A1 CA2291826A1 CA002291826A CA2291826A CA2291826A1 CA 2291826 A1 CA2291826 A1 CA 2291826A1 CA 002291826 A CA002291826 A CA 002291826A CA 2291826 A CA2291826 A CA 2291826A CA 2291826 A1 CA2291826 A1 CA 2291826A1
- Authority
- CA
- Canada
- Prior art keywords
- noise
- amplitude
- spectrum
- output
- amplitude spectrum
- 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.)
- Abandoned
Links
- 230000009467 reduction Effects 0.000 title claims abstract description 148
- 238000000034 method Methods 0.000 title claims abstract description 67
- 238000001228 spectrum Methods 0.000 claims abstract description 177
- 230000009466 transformation Effects 0.000 claims description 43
- 230000001629 suppression Effects 0.000 claims description 19
- 238000002407 reforming Methods 0.000 claims description 16
- 230000001131 transforming effect Effects 0.000 claims description 10
- 230000007423 decrease Effects 0.000 claims description 7
- 230000003595 spectral effect Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000006870 function Effects 0.000 description 19
- 238000011410 subtraction method Methods 0.000 description 18
- 230000008569 process Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 238000007796 conventional method Methods 0.000 description 6
- 238000013459 approach Methods 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000008447 perception Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 229920000214 poly{3-[(S)-5-amino-5-carboxyl-3-oxapentyl]-2,5-thiophenylene hydrochloride} polymer Polymers 0.000 description 1
- 239000000541 tocopherol-rich extract Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- G10L21/0216—Noise filtering characterised by the method used for estimating noise
- G10L21/0232—Processing in the frequency domain
-
- 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
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/78—Detection of presence or absence of voice signals
- G10L25/84—Detection of presence or absence of voice signals for discriminating voice from noise
Landscapes
- Engineering & Computer Science (AREA)
- Computational Linguistics (AREA)
- Quality & Reliability (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Noise Elimination (AREA)
Abstract
L'invention concerne un procédé de réduction de bruits destiné à réduire des bruits résiduels déplaisants, même lorsqu'un mouvement vers des trames de bruit ou à partir de celles-ci est fréquent et que le spectre de chaque trame contient de manière inégale certaines fréquences. Ce procédé de réduction de bruits par soustraction spectrale consiste à produire une valeur de sortie, par soustraction au moyen d'un filtre de soustraction spectrale, d'un spectre d'amplitude de bruit estimé, à partir d'un spectre d'amplitude créé par transformation orthogonale d'un signal d'entrée segmenté pour présenter une longueur de trame déterminée. Dans ce procédé, le taux de soustraction du filtre de soustraction spectrale est variable en fonction du spectre d'amplitude de bruit estimé et on utilise un circuit (6) de filtrage et de réglage d'amplitude. Ce circuit (6) multiplie, pour chaque trame, la valeur de sortie produite par soustraction par le filtre de soustraction spectrale, par un coefficient de réglage d'amplitude, afin de produire une valeur de sortie voulue. Le coefficient de réglage d'amplitude est déterminé par la puissance du spectre d'amplitude (9) et par la puissance du spectre d'amplitude (10) de bruit estimé.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10-84174 | 1998-03-30 | ||
| JP8417498 | 1998-03-30 | ||
| PCT/JP1998/005512 WO1999050825A1 (fr) | 1998-03-30 | 1998-12-07 | Dispositif et procede de reduction de bruits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2291826A1 true CA2291826A1 (fr) | 1999-10-07 |
Family
ID=13823136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002291826A Abandoned CA2291826A1 (fr) | 1998-03-30 | 1998-12-07 | Dispositif et procede de reduction de bruits |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0992978A4 (fr) |
| KR (1) | KR100314332B1 (fr) |
| CN (1) | CN1258368A (fr) |
| AU (1) | AU721270B2 (fr) |
| CA (1) | CA2291826A1 (fr) |
| WO (1) | WO1999050825A1 (fr) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4162604B2 (ja) | 2004-01-08 | 2008-10-08 | 株式会社東芝 | 雑音抑圧装置及び雑音抑圧方法 |
| WO2006046293A1 (fr) * | 2004-10-28 | 2006-05-04 | Fujitsu Limited | Systeme de suppression du bruit |
| JP4873913B2 (ja) * | 2004-12-17 | 2012-02-08 | 学校法人早稲田大学 | 音源分離システムおよび音源分離方法、並びに音響信号取得装置 |
| GB2422237A (en) * | 2004-12-21 | 2006-07-19 | Fluency Voice Technology Ltd | Dynamic coefficients determined from temporally adjacent speech frames |
| WO2006123721A1 (fr) * | 2005-05-17 | 2006-11-23 | Yamaha Corporation | Procede de suppression de bruit et dispositif correspondant |
| KR100686382B1 (ko) | 2005-07-08 | 2007-02-22 | 엔에이치엔(주) | 싱크 서버를 이용한 메신저 알림 시스템 및 방법 |
| CN1822092B (zh) * | 2006-03-28 | 2010-05-26 | 北京中星微电子有限公司 | 一种消除语音输入中背景噪声的方法及其装置 |
| CN101166232B (zh) * | 2006-10-19 | 2010-05-12 | 华晶科技股份有限公司 | 消除马达声音的方法及其数字影像撷取装置 |
| EP2192579A4 (fr) * | 2007-09-19 | 2016-06-08 | Nec Corp | Dispositif de suppression de bruit, son procédé et programme |
| US20120143604A1 (en) * | 2010-12-07 | 2012-06-07 | Rita Singh | Method for Restoring Spectral Components in Denoised Speech Signals |
| JP6182895B2 (ja) | 2012-05-01 | 2017-08-23 | 株式会社リコー | 処理装置、処理方法、プログラム及び処理システム |
| JP6216546B2 (ja) * | 2013-06-18 | 2017-10-18 | パイオニア株式会社 | ノイズ低減装置、放送受信装置及びノイズ低減方法 |
| JP2015206874A (ja) | 2014-04-18 | 2015-11-19 | 富士通株式会社 | 信号処理装置、信号処理方法、及び、プログラム |
| JP6687453B2 (ja) * | 2016-04-12 | 2020-04-22 | パナソニック インテレクチュアル プロパティ コーポレーション オブ アメリカＰａｎａｓｏｎｉｃ Ｉｎｔｅｌｌｅｃｔｕａｌ Ｐｒｏｐｅｒｔｙ Ｃｏｒｐｏｒａｔｉｏｎ ｏｆ Ａｍｅｒｉｃａ | ステレオ再生装置 |
| JP6668995B2 (ja) | 2016-07-27 | 2020-03-18 | 富士通株式会社 | 雑音抑圧装置、雑音抑圧方法及び雑音抑圧用コンピュータプログラム |
| CN108831500B (zh) * | 2018-05-29 | 2023-04-28 | 平安科技（深圳）有限公司 | 语音增强方法、装置、计算机设备及存储介质 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8801014D0 (en) * | 1988-01-18 | 1988-02-17 | British Telecomm | Noise reduction |
| US5710862A (en) * | 1993-06-30 | 1998-01-20 | Motorola, Inc. | Method and apparatus for reducing an undesirable characteristic of a spectral estimate of a noise signal between occurrences of voice signals |
| UA41913C2 (uk) * | 1993-11-30 | 2001-10-15 | Ейті Енд Ті Корп. | Спосіб шумозаглушення у системах зв'язку |
| WO1995016259A1 (fr) * | 1993-12-06 | 1995-06-15 | Philips Electronics N.V. | Systeme et dispositif de reduction du bruit et unite de radiotelephone mobile |
| JP3437264B2 (ja) * | 1994-07-07 | 2003-08-18 | パナソニック モバイルコミュニケーションズ株式会社 | 雑音抑圧装置 |
| SE505156C2 (sv) * | 1995-01-30 | 1997-07-07 | Ericsson Telefon Ab L M | Förfarande för bullerundertryckning genom spektral subtraktion |
| JP3484801B2 (ja) * | 1995-02-17 | 2004-01-06 | ソニー株式会社 | 音声信号の雑音低減方法及び装置 |
| JP3451146B2 (ja) * | 1995-02-17 | 2003-09-29 | 株式会社日立製作所 | スペクトルサブトラクションを用いた雑音除去システムおよび方法 |
-
1998
- 1998-12-07 CA CA002291826A patent/CA2291826A1/fr not_active Abandoned
- 1998-12-07 EP EP98957196A patent/EP0992978A4/fr not_active Withdrawn
- 1998-12-07 WO PCT/JP1998/005512 patent/WO1999050825A1/fr not_active Application Discontinuation
- 1998-12-07 CN CN98805620A patent/CN1258368A/zh active Pending
- 1998-12-07 AU AU13525/99A patent/AU721270B2/en not_active Ceased
-
1999
- 1999-09-07 KR KR1019997008125A patent/KR100314332B1/ko not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR100314332B1 (ko) | 2001-11-16 |
| WO1999050825A1 (fr) | 1999-10-07 |
| EP0992978A4 (fr) | 2002-01-16 |
| EP0992978A1 (fr) | 2000-04-12 |
| KR20000076037A (ko) | 2000-12-26 |
| AU1352599A (en) | 1999-10-18 |
| CN1258368A (zh) | 2000-06-28 |
| AU721270B2 (en) | 2000-06-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |