HK1025848A1 - Acoustic feedback elimination using adaptive notch filter algorithm - Google Patents
Acoustic feedback elimination using adaptive notch filter algorithmInfo
- Publication number
- HK1025848A1 HK1025848A1 HK00104833.3A HK00104833A HK1025848A1 HK 1025848 A1 HK1025848 A1 HK 1025848A1 HK 00104833 A HK00104833 A HK 00104833A HK 1025848 A1 HK1025848 A1 HK 1025848A1
- Authority
- HK
- Hong Kong
- Prior art keywords
- notch filter
- filter algorithm
- acoustic feedback
- adaptive notch
- algorithm
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/02—Circuits for transducers, loudspeakers or microphones for preventing acoustic reaction, i.e. acoustic oscillatory feedback
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Filters That Use Time-Delay Elements (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Circuit For Audible Band Transducer (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/687,682 US5999631A (en) | 1996-07-26 | 1996-07-26 | Acoustic feedback elimination using adaptive notch filter algorithm |
PCT/US1997/013127 WO1998005135A1 (en) | 1996-07-26 | 1997-07-25 | Acoustic feedback elimination using adaptive notch filter algorithm |
Publications (1)
Publication Number | Publication Date |
---|---|
HK1025848A1 true HK1025848A1 (en) | 2000-11-24 |
Family
ID=24761379
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HK00104833.3A HK1025848A1 (en) | 1996-07-26 | 2000-08-02 | Acoustic feedback elimination using adaptive notch filter algorithm |
Country Status (8)
Country | Link |
---|---|
US (1) | US5999631A (da) |
EP (1) | EP0976208B1 (da) |
AT (1) | ATE420499T1 (da) |
DE (1) | DE69739208D1 (da) |
DK (1) | DK0976208T3 (da) |
ES (1) | ES2320712T3 (da) |
HK (1) | HK1025848A1 (da) |
WO (1) | WO1998005135A1 (da) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11127496A (ja) * | 1997-10-20 | 1999-05-11 | Sony Corp | ハウリング除去装置 |
US6353671B1 (en) * | 1998-02-05 | 2002-03-05 | Bioinstco Corp. | Signal processing circuit and method for increasing speech intelligibility |
US6792114B1 (en) * | 1998-10-06 | 2004-09-14 | Gn Resound A/S | Integrated hearing aid performance measurement and initialization system |
US7613529B1 (en) | 2000-09-09 | 2009-11-03 | Harman International Industries, Limited | System for eliminating acoustic feedback |
SG98435A1 (en) * | 2000-12-08 | 2003-09-19 | Nanyang Polytechnic | A method for detecting and removing howling |
US6664460B1 (en) | 2001-01-05 | 2003-12-16 | Harman International Industries, Incorporated | System for customizing musical effects using digital signal processing techniques |
US6717537B1 (en) * | 2001-06-26 | 2004-04-06 | Sonic Innovations, Inc. | Method and apparatus for minimizing latency in digital signal processing systems |
US20030138117A1 (en) * | 2002-01-22 | 2003-07-24 | Goff Eugene F. | System and method for the automated detection, identification and reduction of multi-channel acoustical feedback |
JP3973929B2 (ja) | 2002-03-05 | 2007-09-12 | 松下電器産業株式会社 | ハウリング検出装置 |
JP4274949B2 (ja) * | 2002-03-13 | 2009-06-10 | ハーマン インターナショナル インダストリーズ インコーポレイテッド | オーディオ・フィードバック処理システム |
US20050113701A1 (en) * | 2003-11-26 | 2005-05-26 | Scimed Life Systems, Inc. | Rotating measuring device |
WO2007044029A2 (en) * | 2004-12-03 | 2007-04-19 | Nano Science Diagnostic, Inc. | Method and apparatus for low quantity detection of bioparticles in small sample volumes |
US8265295B2 (en) * | 2005-03-11 | 2012-09-11 | Rane Corporation | Method and apparatus for identifying feedback in a circuit |
US8243953B2 (en) * | 2005-03-11 | 2012-08-14 | Rane Corporation | Method and apparatus for identifying a feedback frequency in a signal |
US7280958B2 (en) * | 2005-09-30 | 2007-10-09 | Motorola, Inc. | Method and system for suppressing receiver audio regeneration |
EP1793645A3 (en) | 2005-11-09 | 2008-08-06 | GPE International Limited | Acoustical feedback suppression for audio amplification systems |
US20070104335A1 (en) * | 2005-11-09 | 2007-05-10 | Gpe International Limited | Acoustic feedback suppression for audio amplification systems |
US8027640B2 (en) * | 2008-12-17 | 2011-09-27 | Motorola Solutions, Inc. | Acoustic suppression using ancillary RF link |
EP2284833A1 (en) | 2009-08-03 | 2011-02-16 | Bernafon AG | A method for monitoring the influence of ambient noise on an adaptive filter for acoustic feedback cancellation |
US8630437B2 (en) * | 2010-02-23 | 2014-01-14 | University Of Utah Research Foundation | Offending frequency suppression in hearing aids |
EP2813175A3 (en) | 2013-06-14 | 2015-04-01 | Oticon A/s | A hearing assistance device with brain-computer interface |
US9392386B2 (en) | 2014-03-14 | 2016-07-12 | Qualcomm Incorporated | Audio signal adjustment for mobile phone based public addressing system |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4232192A (en) * | 1978-05-01 | 1980-11-04 | Starkey Labs, Inc. | Moving-average notch filter |
JPH02155398A (ja) * | 1988-12-07 | 1990-06-14 | Biiba Kk | ハウリング防止装置 |
WO1991020134A1 (en) * | 1990-06-13 | 1991-12-26 | Sabine Musical Manufacturing Company, Inc. | Method and apparatus for adaptive audio resonant frequency filtering |
JPH0477093A (ja) * | 1990-07-16 | 1992-03-11 | Pioneer Electron Corp | ハウリング防止機能を備えた音響装置 |
US5442712A (en) * | 1992-11-25 | 1995-08-15 | Matsushita Electric Industrial Co., Ltd. | Sound amplifying apparatus with automatic howl-suppressing function |
JP3235925B2 (ja) * | 1993-11-19 | 2001-12-04 | 松下電器産業株式会社 | ハウリング抑制装置 |
US5506910A (en) * | 1994-01-13 | 1996-04-09 | Sabine Musical Manufacturing Company, Inc. | Automatic equalizer |
US5533120A (en) * | 1994-02-01 | 1996-07-02 | Tandy Corporation | Acoustic feedback cancellation for equalized amplifying systems |
-
1996
- 1996-07-26 US US08/687,682 patent/US5999631A/en not_active Expired - Lifetime
-
1997
- 1997-07-25 DE DE69739208T patent/DE69739208D1/de not_active Expired - Lifetime
- 1997-07-25 ES ES97934306T patent/ES2320712T3/es not_active Expired - Lifetime
- 1997-07-25 AT AT97934306T patent/ATE420499T1/de not_active IP Right Cessation
- 1997-07-25 DK DK97934306T patent/DK0976208T3/da active
- 1997-07-25 EP EP97934306A patent/EP0976208B1/en not_active Expired - Lifetime
- 1997-07-25 WO PCT/US1997/013127 patent/WO1998005135A1/en active Application Filing
-
2000
- 2000-08-02 HK HK00104833.3A patent/HK1025848A1/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
ATE420499T1 (de) | 2009-01-15 |
DE69739208D1 (de) | 2009-02-26 |
EP0976208A1 (en) | 2000-02-02 |
EP0976208B1 (en) | 2009-01-07 |
DK0976208T3 (da) | 2009-04-20 |
EP0976208A4 (en) | 2006-08-16 |
WO1998005135A1 (en) | 1998-02-05 |
ES2320712T3 (es) | 2009-05-27 |
US5999631A (en) | 1999-12-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PC | Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee) |
Effective date: 20160725 |