DE69819973D1 - Rauschminderungssystem für Audio - Google Patents
Rauschminderungssystem für AudioInfo
- Publication number
- DE69819973D1 DE69819973D1 DE69819973T DE69819973T DE69819973D1 DE 69819973 D1 DE69819973 D1 DE 69819973D1 DE 69819973 T DE69819973 T DE 69819973T DE 69819973 T DE69819973 T DE 69819973T DE 69819973 D1 DE69819973 D1 DE 69819973D1
- Authority
- DE
- Germany
- Prior art keywords
- audio
- noise reduction
- reduction system
- noise
- reduction
- 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
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
- H03G9/005—Combinations of two or more types of control, e.g. gain control and tone control of digital or coded signals
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
- H03G9/02—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
- H03G9/025—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers frequency-dependent volume compression or expansion, e.g. multiple-band systems
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21796997A JP3535957B2 (ja) | 1997-07-29 | 1997-07-29 | 雑音低減装置及び雑音低減方法 |
JP21796997 | 1997-07-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69819973D1 true DE69819973D1 (de) | 2004-01-08 |
DE69819973T2 DE69819973T2 (de) | 2004-07-22 |
Family
ID=16712580
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69819973T Expired - Lifetime DE69819973T2 (de) | 1997-07-29 | 1998-07-28 | Rauschminderungssystem für Audio |
Country Status (4)
Country | Link |
---|---|
US (1) | US6859540B1 (de) |
EP (1) | EP0895353B1 (de) |
JP (1) | JP3535957B2 (de) |
DE (1) | DE69819973T2 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7035417B1 (en) * | 1999-04-05 | 2006-04-25 | Packard Thomas N | System for reducing noise in the reproduction of recorded sound signals |
US7433475B2 (en) * | 2003-11-27 | 2008-10-07 | Canon Kabushiki Kaisha | Electronic device, video camera apparatus, and control method therefor |
US7742914B2 (en) * | 2005-03-07 | 2010-06-22 | Daniel A. Kosek | Audio spectral noise reduction method and apparatus |
US7678986B2 (en) * | 2007-03-22 | 2010-03-16 | Qualcomm Incorporated | Musical instrument digital interface hardware instructions |
US7663051B2 (en) * | 2007-03-22 | 2010-02-16 | Qualcomm Incorporated | Audio processing hardware elements |
US8954185B2 (en) * | 2008-03-26 | 2015-02-10 | Haas Automation, Inc. | Cut optimization system and method |
US8416964B2 (en) * | 2008-12-15 | 2013-04-09 | Gentex Corporation | Vehicular automatic gain control (AGC) microphone system and method for post processing optimization of a microphone signal |
WO2010099237A2 (en) * | 2009-02-25 | 2010-09-02 | Conexant Systems, Inc. | Speaker distortion reduction system and method |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4185168A (en) * | 1976-05-04 | 1980-01-22 | Causey G Donald | Method and means for adaptively filtering near-stationary noise from an information bearing signal |
JPS532022A (en) * | 1976-06-28 | 1978-01-10 | Victor Co Of Japan Ltd | Noise eliminator |
JPS55127600A (en) * | 1979-03-26 | 1980-10-02 | Sony Corp | Voice pitch converter |
JPS56103511A (en) * | 1980-01-23 | 1981-08-18 | Hitachi Ltd | Monolithic semiconductor integrated circuit |
JPS56122243A (en) * | 1980-02-29 | 1981-09-25 | Victor Co Of Japan Ltd | Noise reduction system |
JPS5860324U (ja) * | 1981-10-19 | 1983-04-23 | 松下電器産業株式会社 | 音響再生装置 |
JPS59180210U (ja) * | 1983-05-16 | 1984-12-01 | パイオニア株式会社 | ノイズ低減回路 |
NL8600406A (nl) * | 1986-02-18 | 1987-09-16 | Philips Nv | Automatisch geregeld versterkerstelsel. |
JPH0787391B2 (ja) * | 1989-02-03 | 1995-09-20 | パイオニア株式会社 | Fmステレオチューナのノイズリダクション装置 |
JPH0787390B2 (ja) * | 1989-02-03 | 1995-09-20 | パイオニア株式会社 | Fmステレオチューナのノイズリダクション装置 |
US6695477B1 (en) * | 1989-10-25 | 2004-02-24 | Sony Corporation | Audio signal reproducing apparatus |
JP3191457B2 (ja) * | 1992-10-31 | 2001-07-23 | ソニー株式会社 | 高能率符号化装置、ノイズスペクトル変更装置及び方法 |
FI97758C (fi) * | 1992-11-20 | 1997-02-10 | Nokia Deutschland Gmbh | Järjestelmä audiosignaalin käsittelemiseksi |
US5416847A (en) * | 1993-02-12 | 1995-05-16 | The Walt Disney Company | Multi-band, digital audio noise filter |
US5434922A (en) * | 1993-04-08 | 1995-07-18 | Miller; Thomas E. | Method and apparatus for dynamic sound optimization |
US5617472A (en) * | 1993-12-28 | 1997-04-01 | Nec Corporation | Noise suppression of acoustic signal in telephone set |
JP3601074B2 (ja) * | 1994-05-31 | 2004-12-15 | ソニー株式会社 | 信号処理方法及び信号処理装置 |
US5838800A (en) * | 1995-12-11 | 1998-11-17 | Qsound Labs, Inc. | Apparatus for enhancing stereo effect with central sound image maintenance circuit |
JP3483695B2 (ja) * | 1996-03-14 | 2004-01-06 | 株式会社リコー | 音声通信装置 |
JPH09305908A (ja) * | 1996-05-09 | 1997-11-28 | Pioneer Electron Corp | 雑音低減装置 |
KR100230102B1 (ko) * | 1996-12-11 | 1999-11-15 | 구자홍 | 볼륨레벨에 따른 음성조정방법 |
US6097820A (en) * | 1996-12-23 | 2000-08-01 | Lucent Technologies Inc. | System and method for suppressing noise in digitally represented voice signals |
US5789689A (en) * | 1997-01-17 | 1998-08-04 | Doidic; Michel | Tube modeling programmable digital guitar amplification system |
US6035048A (en) * | 1997-06-18 | 2000-03-07 | Lucent Technologies Inc. | Method and apparatus for reducing noise in speech and audio signals |
-
1997
- 1997-07-29 JP JP21796997A patent/JP3535957B2/ja not_active Expired - Lifetime
-
1998
- 1998-07-28 DE DE69819973T patent/DE69819973T2/de not_active Expired - Lifetime
- 1998-07-28 US US09/123,453 patent/US6859540B1/en not_active Expired - Fee Related
- 1998-07-28 EP EP98114092A patent/EP0895353B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0895353A2 (de) | 1999-02-03 |
EP0895353B1 (de) | 2003-11-26 |
JPH1145404A (ja) | 1999-02-16 |
US6859540B1 (en) | 2005-02-22 |
EP0895353A3 (de) | 2000-12-20 |
JP3535957B2 (ja) | 2004-06-07 |
DE69819973T2 (de) | 2004-07-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8320 | Willingness to grant licences declared (paragraph 23) | ||
8364 | No opposition during term of opposition | ||
8330 | Complete disclaimer |