DK173760B1 - Elektronisk filter - Google Patents
Elektronisk filter Download PDFInfo
- Publication number
- DK173760B1 DK173760B1 DK198901707A DK170789A DK173760B1 DK 173760 B1 DK173760 B1 DK 173760B1 DK 198901707 A DK198901707 A DK 198901707A DK 170789 A DK170789 A DK 170789A DK 173760 B1 DK173760 B1 DK 173760B1
- Authority
- DK
- Denmark
- Prior art keywords
- filter
- signal
- logarithmic
- circuit
- electronic
- Prior art date
Links
- 239000003990 capacitor Substances 0.000 claims description 78
- 239000000203 mixture Substances 0.000 claims description 24
- 238000001914 filtration Methods 0.000 claims description 19
- 230000006870 function Effects 0.000 claims description 17
- 239000002131 composite material Substances 0.000 claims description 15
- 230000003044 adaptive effect Effects 0.000 claims description 11
- 230000007306 turnover Effects 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 3
- 230000003252 repetitive effect Effects 0.000 claims description 2
- 238000007792 addition Methods 0.000 description 26
- 238000000034 method Methods 0.000 description 26
- 210000004027 cell Anatomy 0.000 description 25
- 238000006243 chemical reaction Methods 0.000 description 24
- 238000011045 prefiltration Methods 0.000 description 18
- 230000000670 limiting effect Effects 0.000 description 17
- 238000010586 diagram Methods 0.000 description 16
- 230000008569 process Effects 0.000 description 14
- 238000012545 processing Methods 0.000 description 11
- 238000009825 accumulation Methods 0.000 description 10
- 230000000875 corresponding effect Effects 0.000 description 10
- 230000002829 reductive effect Effects 0.000 description 10
- 238000013461 design Methods 0.000 description 9
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 8
- 230000006978 adaptation Effects 0.000 description 7
- 229920005591 polysilicon Polymers 0.000 description 7
- 230000004044 response Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 208000032041 Hearing impaired Diseases 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- 101100519969 Arabidopsis thaliana PHS2 gene Proteins 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 210000003918 fraction a Anatomy 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 210000000613 ear canal Anatomy 0.000 description 1
- 239000012776 electronic material Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000001413 far-infrared spectroscopy Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000013598 vector Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H17/00—Networks using digital techniques
- H03H17/02—Frequency selective networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
- H04R25/45—Prevention of acoustic reaction, i.e. acoustic oscillatory feedback
- H04R25/453—Prevention of acoustic reaction, i.e. acoustic oscillatory feedback electronically
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H17/00—Networks using digital techniques
- H03H17/02—Frequency selective networks
- H03H17/0248—Filters characterised by a particular frequency response or filtering method
- H03H17/0261—Non linear filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H21/00—Adaptive networks
- H03H21/0012—Digital adaptive filters
-
- 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
- H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H21/00—Adaptive networks
- H03H21/0012—Digital adaptive filters
- H03H2021/007—Computation saving measures; Accelerating measures
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H21/00—Adaptive networks
- H03H21/0012—Digital adaptive filters
- H03H2021/007—Computation saving measures; Accelerating measures
- H03H2021/0072—Measures relating to the coefficients
- H03H2021/0074—Reduction of the update frequency
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
- H04R25/50—Customised settings for obtaining desired overall acoustical characteristics
- H04R25/505—Customised settings for obtaining desired overall acoustical characteristics using digital signal processing
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Mathematical Physics (AREA)
- Computer Hardware Design (AREA)
- Nonlinear Science (AREA)
- Otolaryngology (AREA)
- Health & Medical Sciences (AREA)
- Neurosurgery (AREA)
- General Health & Medical Sciences (AREA)
- Filters That Use Time-Delay Elements (AREA)
- Analogue/Digital Conversion (AREA)
- Networks Using Active Elements (AREA)
- Complex Calculations (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US18017088 | 1988-04-11 | ||
| US07/180,170 US5111419A (en) | 1988-03-23 | 1988-04-11 | Electronic filters, signal conversion apparatus, hearing aids and methods |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK170789D0 DK170789D0 (da) | 1989-04-10 |
| DK170789A DK170789A (da) | 1989-10-12 |
| DK173760B1 true DK173760B1 (da) | 2001-09-17 |
Family
ID=22659473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK198901707A DK173760B1 (da) | 1988-04-11 | 1989-04-10 | Elektronisk filter |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US5111419A (ja) |
| EP (1) | EP0339819B1 (ja) |
| JP (2) | JP3307923B2 (ja) |
| KR (1) | KR0138526B1 (ja) |
| AU (1) | AU621100B2 (ja) |
| CA (1) | CA1335674C (ja) |
| DE (1) | DE68919741T2 (ja) |
| DK (1) | DK173760B1 (ja) |
Families Citing this family (49)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5259033A (en) * | 1989-08-30 | 1993-11-02 | Gn Danavox As | Hearing aid having compensation for acoustic feedback |
| GB8919591D0 (en) * | 1989-08-30 | 1989-10-11 | Gn Davavox As | Hearing aid having compensation for acoustic feedback |
| US5500901A (en) * | 1992-02-20 | 1996-03-19 | Resistance Technology, Inc. | Frequency response adjusting device |
| US5233549A (en) * | 1992-04-21 | 1993-08-03 | Loral Aerospace Corp. | Reduced quantization error FIR filter |
| US5402496A (en) * | 1992-07-13 | 1995-03-28 | Minnesota Mining And Manufacturing Company | Auditory prosthesis, noise suppression apparatus and feedback suppression apparatus having focused adaptive filtering |
| US5535150A (en) * | 1993-04-20 | 1996-07-09 | Massachusetts Institute Of Technology | Single chip adaptive filter utilizing updatable weighting techniques |
| US8085959B2 (en) * | 1994-07-08 | 2011-12-27 | Brigham Young University | Hearing compensation system incorporating signal processing techniques |
| US6072885A (en) * | 1994-07-08 | 2000-06-06 | Sonic Innovations, Inc. | Hearing aid device incorporating signal processing techniques |
| WO1996003848A1 (de) * | 1994-07-21 | 1996-02-08 | Institut Für Entwicklung Und Forschung Dr. Vielberth Kg | Hörhilfe |
| DK0824845T3 (da) * | 1995-05-02 | 1999-06-21 | Toepholm & Westermann | Fremgangsmåde til styring af et programmerbart eller programstyret høreapparat til dettes in situ tilpasningsjustering |
| JP2970498B2 (ja) * | 1995-10-26 | 1999-11-02 | 日本電気株式会社 | ディジタル補聴器 |
| EP0798947A1 (de) * | 1996-03-27 | 1997-10-01 | Siemens Audiologische Technik GmbH | Verfahren und Schaltung zur Verarbeitung von Daten, insbesondere Signaldaten in einem digitalen programmierbaren Hörgerät |
| CA2212131A1 (en) * | 1996-08-07 | 1998-02-07 | Beltone Electronics Corporation | Digital hearing aid system |
| US7787647B2 (en) | 1997-01-13 | 2010-08-31 | Micro Ear Technology, Inc. | Portable system for programming hearing aids |
| US6449662B1 (en) * | 1997-01-13 | 2002-09-10 | Micro Ear Technology, Inc. | System for programming hearing aids |
| US6424722B1 (en) * | 1997-01-13 | 2002-07-23 | Micro Ear Technology, Inc. | Portable system for programming hearing aids |
| US6786420B1 (en) | 1997-07-15 | 2004-09-07 | Silverbrook Research Pty. Ltd. | Data distribution mechanism in the form of ink dots on cards |
| US6236731B1 (en) | 1997-04-16 | 2001-05-22 | Dspfactory Ltd. | Filterbank structure and method for filtering and separating an information signal into different bands, particularly for audio signal in hearing aids |
| US6618117B2 (en) | 1997-07-12 | 2003-09-09 | Silverbrook Research Pty Ltd | Image sensing apparatus including a microcontroller |
| US6624848B1 (en) | 1997-07-15 | 2003-09-23 | Silverbrook Research Pty Ltd | Cascading image modification using multiple digital cameras incorporating image processing |
| US7110024B1 (en) | 1997-07-15 | 2006-09-19 | Silverbrook Research Pty Ltd | Digital camera system having motion deblurring means |
| US6948794B2 (en) | 1997-07-15 | 2005-09-27 | Silverbrook Reserach Pty Ltd | Printhead re-capping assembly for a print and demand digital camera system |
| US6690419B1 (en) | 1997-07-15 | 2004-02-10 | Silverbrook Research Pty Ltd | Utilising eye detection methods for image processing in a digital image camera |
| US6879341B1 (en) | 1997-07-15 | 2005-04-12 | Silverbrook Research Pty Ltd | Digital camera system containing a VLIW vector processor |
| US6366863B1 (en) | 1998-01-09 | 2002-04-02 | Micro Ear Technology Inc. | Portable hearing-related analysis system |
| DE19802568C2 (de) * | 1998-01-23 | 2003-05-28 | Cochlear Ltd | Hörhilfe mit Kompensation von akustischer und/oder mechanischer Rückkopplung |
| AUPP702098A0 (en) | 1998-11-09 | 1998-12-03 | Silverbrook Research Pty Ltd | Image creation method and apparatus (ART73) |
| ATE518383T1 (de) * | 1998-10-07 | 2011-08-15 | Oticon As | Rückkopplungsbehandlung für ein hörgerät |
| US6408318B1 (en) | 1999-04-05 | 2002-06-18 | Xiaoling Fang | Multiple stage decimation filter |
| AUPQ056099A0 (en) | 1999-05-25 | 1999-06-17 | Silverbrook Research Pty Ltd | A method and apparatus (pprint01) |
| US6292571B1 (en) | 1999-06-02 | 2001-09-18 | Sarnoff Corporation | Hearing aid digital filter |
| EP1351554B1 (en) * | 1999-07-21 | 2011-02-16 | Med-El Elektromedizinische Geräte GmbH | Multi-channel cochlear implant with neural response telemetry |
| US6480610B1 (en) * | 1999-09-21 | 2002-11-12 | Sonic Innovations, Inc. | Subband acoustic feedback cancellation in hearing aids |
| US6757395B1 (en) | 2000-01-12 | 2004-06-29 | Sonic Innovations, Inc. | Noise reduction apparatus and method |
| EP1252799B2 (en) | 2000-01-20 | 2022-11-02 | Starkey Laboratories, Inc. | Method and apparatus for fitting hearing aids |
| EP1251714B2 (en) | 2001-04-12 | 2015-06-03 | Sound Design Technologies Ltd. | Digital hearing aid system |
| US6633202B2 (en) | 2001-04-12 | 2003-10-14 | Gennum Corporation | Precision low jitter oscillator circuit |
| DK1251715T4 (da) * | 2001-04-18 | 2011-01-10 | Sound Design Technologies Ltd | Flerkanalshøreapparat med kommunikation mellem kanalerne |
| DE60223869D1 (de) * | 2001-04-18 | 2008-01-17 | Gennum Corp | Digitaler Quasi-Mittelwertdetektor |
| US20020191800A1 (en) * | 2001-04-19 | 2002-12-19 | Armstrong Stephen W. | In-situ transducer modeling in a digital hearing instrument |
| GB2377568B (en) | 2001-07-12 | 2004-12-15 | Fast Analog Solutions Ltd | Low pass filter |
| ATE526792T1 (de) * | 2001-08-15 | 2011-10-15 | Sound Design Technologies Ltd | Rekonfigurierbare hörhilfevorrichtung mit niedrigem leistungsverbrauch |
| US7151838B2 (en) * | 2002-08-21 | 2006-12-19 | Galler Bernard A | Digital hearing aid battery conservation method and apparatus |
| CA2601662A1 (en) | 2006-09-18 | 2008-03-18 | Matthias Mullenborn | Wireless interface for programming hearing assistance devices |
| US9049524B2 (en) * | 2007-03-26 | 2015-06-02 | Cochlear Limited | Noise reduction in auditory prostheses |
| JP3148939U (ja) * | 2008-12-22 | 2009-03-05 | 株式会社日山 | サーチ機能付き補聴器システム |
| US9203422B2 (en) * | 2011-09-29 | 2015-12-01 | Ecole Polytechique Federale De Lausanne (Epfl) | Low distortion switched-capacitor event-driven analog to digital converter |
| JP6073920B2 (ja) * | 2012-05-30 | 2017-02-01 | 陳啓星ＣＨＥＮ，Ｑｉｘｉｎｇ | 対数コンパンディング比率複数同時実行式超高速ＡＤＣ及びＤＡＣの級電位アーキテクチャ（ｓｔａｇｅ−ｐｏｔｅｎｔｉａｌａｒｃｈｉｔｅｃｔｕｒｅ） |
| US11493713B1 (en) * | 2018-09-19 | 2022-11-08 | Psiquantum, Corp. | Photonic quantum computer assembly having dies with specific contact configuration and matched CTE |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3889108A (en) * | 1974-07-25 | 1975-06-10 | Us Navy | Adaptive low pass filter |
| US4038536A (en) * | 1976-03-29 | 1977-07-26 | Rockwell International Corporation | Adaptive recursive least mean square error filter |
| DE2716336B1 (de) * | 1977-04-13 | 1978-07-06 | Siemens Ag | Verfahren und Hoergeraet zur Kompensation von Gehoerdefekten |
| JPS55100727A (en) * | 1979-01-26 | 1980-07-31 | Sony Corp | Noncyclic transversal filter |
| JPS5853358B2 (ja) * | 1980-03-31 | 1983-11-29 | 株式会社東芝 | 音声分析装置 |
| DE3131193A1 (de) * | 1981-08-06 | 1983-02-24 | Siemens AG, 1000 Berlin und 8000 München | Geraet zur kompensation von gehoerschaeden |
| DK546581A (da) * | 1981-12-10 | 1983-06-11 | Danavox As | Fremgangsmaade til tilpasning af overfoeringsfunktionen i et hoereapparat til forskellige hoeredefekter samt hoereapparat til udoevelse af fremgangsmaaden |
| US4649505A (en) * | 1984-07-02 | 1987-03-10 | General Electric Company | Two-input crosstalk-resistant adaptive noise canceller |
| US4548082A (en) * | 1984-08-28 | 1985-10-22 | Central Institute For The Deaf | Hearing aids, signal supplying apparatus, systems for compensating hearing deficiencies, and methods |
| US4695970A (en) * | 1984-08-31 | 1987-09-22 | Texas Instruments Incorporated | Linear predictive coding technique with interleaved sequence digital lattice filter |
| JPS6165616A (ja) * | 1984-09-07 | 1986-04-04 | Nippon Hoso Kyokai <Nhk> | 対称形ｆｉｒディジタルフィルタ |
| US4658426A (en) * | 1985-10-10 | 1987-04-14 | Harold Antin | Adaptive noise suppressor |
| AU596633B2 (en) * | 1986-01-21 | 1990-05-10 | Antin, Mark | Digital hearing enhancement apparatus |
| US4731850A (en) * | 1986-06-26 | 1988-03-15 | Audimax, Inc. | Programmable digital hearing aid system |
| NL8700075A (nl) * | 1987-01-14 | 1988-08-01 | Philips Nv | Datatransmissiestelsel voorzien van versmeringsfilters. |
-
1988
- 1988-04-11 US US07/180,170 patent/US5111419A/en not_active Expired - Lifetime
-
1989
- 1989-04-05 AU AU32458/89A patent/AU621100B2/en not_active Expired
- 1989-04-06 CA CA000595860A patent/CA1335674C/en not_active Expired - Lifetime
- 1989-04-10 EP EP89303482A patent/EP0339819B1/en not_active Expired - Lifetime
- 1989-04-10 DK DK198901707A patent/DK173760B1/da not_active IP Right Cessation
- 1989-04-10 DE DE68919741T patent/DE68919741T2/de not_active Expired - Lifetime
- 1989-04-11 KR KR1019890004781A patent/KR0138526B1/ko not_active IP Right Cessation
- 1989-04-11 JP JP09171589A patent/JP3307923B2/ja not_active Expired - Lifetime
-
1999
- 1999-07-26 JP JP21136099A patent/JP3308243B2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0339819A2 (en) | 1989-11-02 |
| KR0138526B1 (ko) | 1998-06-15 |
| EP0339819B1 (en) | 1994-12-07 |
| JPH01316016A (ja) | 1989-12-20 |
| JP3307923B2 (ja) | 2002-07-29 |
| DE68919741T2 (de) | 1995-04-20 |
| CA1335674C (en) | 1995-05-23 |
| AU621100B2 (en) | 1992-03-05 |
| KR890016871A (ko) | 1989-11-30 |
| US5111419A (en) | 1992-05-05 |
| JP3308243B2 (ja) | 2002-07-29 |
| EP0339819A3 (en) | 1991-01-30 |
| DK170789A (da) | 1989-10-12 |
| JP2000078696A (ja) | 2000-03-14 |
| DK170789D0 (da) | 1989-04-10 |
| DE68919741D1 (de) | 1995-01-19 |
| AU3245889A (en) | 1989-10-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DK173760B1 (da) | Elektronisk filter | |
| US5225836A (en) | Electronic filters, repeated signal charge conversion apparatus, hearing aids and methods | |
| US4187413A (en) | Hearing aid with digital processing for: correlation of signals from plural microphones, dynamic range control, or filtering using an erasable memory | |
| EP1121834B1 (en) | Hearing aids based on models of cochlear compression | |
| AU579890B2 (en) | Hearing aids, signal supplying apparatus, systems for compensating hearing deficiencies, and methods | |
| US5357251A (en) | Electronic filters, signal conversion apparatus, hearing aids and methods | |
| Chong et al. | A 16-channel low-power nonuniform spaced filter bank core for digital hearing aids | |
| CN109451398A (zh) | 声反馈消除设备、声反馈消除方法、音频处理系统 | |
| Vicen-Bueno et al. | A hearing aid simulator to test adaptive signal processing algorithms | |
| CN110226200A (zh) | 信号处理装置、信号处理方法和计算机程序 | |
| Raj et al. | Design and implementation of reconfigurable digital filter bank for hearing aid | |
| Bhuyan et al. | Design and Implementation of an Area and Power-efficient Reconfigurable Hearing Aid using Interpolated Sub-band Distribution Technique | |
| Morley Jr et al. | Electronic filters, signal conversion apparatus, hearing aids and methods | |
| CN111739505B (zh) | 一种主动降噪系统和方法 | |
| Tharini et al. | 21 band 1/3-octave filter bank for digital hearing aids | |
| Gambin et al. | Digital cochlea model implementation using Xilinx XC3S500E spartan-3E FPGA | |
| Rass et al. | Evaluation of digital hearing aid algorithms on wearable signal processor systems | |
| Lin et al. | Design and implementation of 18-band Quasi-ANSI S1. 11 1/3-octave filter bank for digital hearing aids | |
| Tan et al. | Speech-enabled pure tone audiometer | |
| Negi et al. | Comparative Analysis of Octave and Band Pass Filter for Improving Hearing Capability of Deaf People | |
| Schwarz et al. | Silicon Cochlea: A digital VLSI implementation of a psychoacoustically and physiologically motivated speech preprocessor | |
| JPS63103509A (ja) | デジタルフイルタ | |
| Deepu | A Digital Hearing Aid ASIC With Efficient 18-Band ANSI S1. 11 Filter Bank and Dynamic Range Compression Algorithms | |
| Rawandale et al. | Aquila Based Adaptive Filtering for Hearing Aid with Optimized Performance. | |
| Hemmeter | Reducing power consumption using customized numerical representations in digital hearing aids |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B1 | Patent granted (law 1993) | ||
| PBP | Patent lapsed | ||
| B1 | Patent granted (law 1993) | ||
| PBP | Patent lapsed |
Country of ref document: DK |