CA2287261C - Apparatus and method for a low power digital filter bank - Google Patents
Apparatus and method for a low power digital filter bank Download PDFInfo
- Publication number
- CA2287261C CA2287261C CA002287261A CA2287261A CA2287261C CA 2287261 C CA2287261 C CA 2287261C CA 002287261 A CA002287261 A CA 002287261A CA 2287261 A CA2287261 A CA 2287261A CA 2287261 C CA2287261 C CA 2287261C
- Authority
- CA
- Canada
- Prior art keywords
- digital
- filter
- squares
- low
- pass
- 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 - Fee Related
Links
- 238000000034 method Methods 0.000 title claims description 23
- 230000004044 response Effects 0.000 claims abstract description 50
- 239000013598 vector Substances 0.000 claims abstract description 47
- 230000002093 peripheral effect Effects 0.000 claims description 29
- 238000012545 processing Methods 0.000 claims description 16
- 239000007943 implant Substances 0.000 claims description 7
- 238000002513 implantation Methods 0.000 claims description 3
- 230000015654 memory Effects 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 238000005070 sampling Methods 0.000 description 10
- 239000000835 fiber Substances 0.000 description 4
- 230000001537 neural effect Effects 0.000 description 4
- 230000005236 sound signal Effects 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 230000000638 stimulation Effects 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 210000003477 cochlea Anatomy 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000036982 action potential Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000001994 activation Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000002051 biphasic effect Effects 0.000 description 1
- 210000000860 cochlear nerve Anatomy 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000019800 disodium phosphate Nutrition 0.000 description 1
- 230000006461 physiological response Effects 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000011045 prefiltration Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000541 pulsatile effect Effects 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
- 230000009467 reduction Effects 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
- H03H17/06—Non-recursive filters
-
- 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
- H03H17/0264—Filter sets with mutual related characteristics
- H03H17/0266—Filter banks
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Mathematical Physics (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Filters That Use Time-Delay Elements (AREA)
- Analogue/Digital Conversion (AREA)
- Networks Using Active Elements (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US4527997P | 1997-05-01 | 1997-05-01 | |
| US60/045,279 | 1997-05-01 | ||
| PCT/US1998/008520 WO1998049775A1 (en) | 1997-05-01 | 1998-04-28 | Apparatus and method for a low power digital filter bank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2287261A1 CA2287261A1 (en) | 1998-11-05 |
| CA2287261C true CA2287261C (en) | 2007-10-23 |
Family
ID=21936983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002287261A Expired - Fee Related CA2287261C (en) | 1997-05-01 | 1998-04-28 | Apparatus and method for a low power digital filter bank |
Country Status (8)
| Country | Link |
|---|---|
| US (2) | US5983139A (enExample) |
| EP (1) | EP0979554B1 (enExample) |
| JP (1) | JP4293639B2 (enExample) |
| AT (1) | ATE248459T1 (enExample) |
| AU (1) | AU750976B2 (enExample) |
| CA (1) | CA2287261C (enExample) |
| DE (1) | DE69817555T2 (enExample) |
| WO (1) | WO1998049775A1 (enExample) |
Families Citing this family (65)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6219580B1 (en) * | 1995-04-26 | 2001-04-17 | Advanced Bionics Corporation | Multichannel cochlear prosthesis with flexible control of stimulus waveforms |
| JP3545926B2 (ja) * | 1997-12-03 | 2004-07-21 | シャープ株式会社 | 原稿読み取り装置 |
| EP1051879B1 (en) * | 1998-01-12 | 2005-09-21 | IMPERIAL COLLEGE OF SCIENCE, TECHNOLOGY & MEDICINE | Audio signal processors |
| AUPP790598A0 (en) | 1998-12-23 | 1999-01-28 | Lake Dsp Pty Limited | Efficient impulse response convolution method and apparatus |
| US7917224B2 (en) | 1999-07-21 | 2011-03-29 | Med-El Elektromedizinische Geraete Gmbh | Simultaneous stimulation for low power consumption |
| EP1854504B1 (en) | 1999-08-26 | 2012-09-19 | Med-El Elektromedizinische Geräte GmbH | Electrical nerve stimulation based on channel specific sampling sequences |
| US8165686B2 (en) | 1999-08-26 | 2012-04-24 | Med-El Elektromedizinische Geraete Gmbh | Simultaneous intracochlear stimulation |
| ATE293418T1 (de) * | 1999-09-16 | 2005-05-15 | Advanced Bionics N V | Cochlea-implantat |
| IL133451A0 (en) * | 1999-12-10 | 2001-04-30 | Dspc Tech Ltd | Programmable convolver |
| US7076315B1 (en) * | 2000-03-24 | 2006-07-11 | Audience, Inc. | Efficient computation of log-frequency-scale digital filter cascade |
| US6728578B1 (en) * | 2000-06-01 | 2004-04-27 | Advanced Bionics Corporation | Envelope-based amplitude mapping for cochlear implant stimulus |
| ATE394755T1 (de) * | 2000-06-20 | 2008-05-15 | Nxp Bv | Datenverarbeitungsgerät |
| JP2004503163A (ja) * | 2000-07-11 | 2004-01-29 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 自動利得制御回路 |
| US7062523B1 (en) * | 2000-08-01 | 2006-06-13 | Analog Devices, Inc. | Method for efficiently computing a fast fourier transform |
| CN100574158C (zh) * | 2001-08-27 | 2009-12-23 | 加利福尼亚大学董事会 | 用于改善音频信号的方法与装置 |
| WO2003034960A1 (en) * | 2001-10-24 | 2003-05-01 | Med-El Elektromedizinische Geräte Ges.m.b.H. | Implantable fluid delivery apparatuses and implantable electrode |
| US20070088335A1 (en) * | 2001-10-24 | 2007-04-19 | Med-El Elektromedizinische Geraete Gmbh | Implantable neuro-stimulation electrode with fluid reservoir |
| US7013319B1 (en) | 2001-11-20 | 2006-03-14 | Analog Devices, Inc. | Digital filter methods and structures for increased processing rates |
| US7130694B1 (en) * | 2001-12-26 | 2006-10-31 | Advanced Bionics Corporation | Pulse skipping strategy |
| EP1572287B1 (en) * | 2002-12-02 | 2011-02-23 | Med-El Elektromedizinische Geräte GmbH | Fluid switch controlled trans-cutaneously via a magnetic force |
| AU2003901634A0 (en) * | 2003-04-04 | 2003-05-01 | Cochlear Limited | Reduced power consumption in audio processors |
| US20050047537A1 (en) * | 2003-08-29 | 2005-03-03 | Ting-Yuan Cheng | Method and system of signal path tracking |
| WO2005072608A1 (en) * | 2004-01-29 | 2005-08-11 | Everest Biomedical Instruments Co. | Method and apparatus for wireless brain interface |
| US20060083343A1 (en) * | 2004-10-19 | 2006-04-20 | Kawasaki Microelectronics, Inc. | Clock generation using phase interpolators |
| US20060212094A1 (en) * | 2004-12-31 | 2006-09-21 | Ludwig Moser | Middle ear multi-channel electrode |
| US7515966B1 (en) * | 2005-03-14 | 2009-04-07 | Advanced Bionics, Llc | Sound processing and stimulation systems and methods for use with cochlear implant devices |
| US7996212B2 (en) * | 2005-06-29 | 2011-08-09 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Device, method and computer program for analyzing an audio signal |
| US8345890B2 (en) | 2006-01-05 | 2013-01-01 | Audience, Inc. | System and method for utilizing inter-microphone level differences for speech enhancement |
| US8204252B1 (en) | 2006-10-10 | 2012-06-19 | Audience, Inc. | System and method for providing close microphone adaptive array processing |
| US8194880B2 (en) | 2006-01-30 | 2012-06-05 | Audience, Inc. | System and method for utilizing omni-directional microphones for speech enhancement |
| US9185487B2 (en) * | 2006-01-30 | 2015-11-10 | Audience, Inc. | System and method for providing noise suppression utilizing null processing noise subtraction |
| US8744844B2 (en) * | 2007-07-06 | 2014-06-03 | Audience, Inc. | System and method for adaptive intelligent noise suppression |
| AR059786A1 (es) * | 2006-03-09 | 2008-04-30 | Med El Elektromed Geraete Gmbh | Configuracion de electrodo de implante coclear para eluir farmacos |
| US8046081B2 (en) * | 2006-05-18 | 2011-10-25 | Med-El Elektromedizinische Geraete Gmbh | Implanted system with DC free inputs and outputs |
| US8150065B2 (en) * | 2006-05-25 | 2012-04-03 | Audience, Inc. | System and method for processing an audio signal |
| US8934641B2 (en) | 2006-05-25 | 2015-01-13 | Audience, Inc. | Systems and methods for reconstructing decomposed audio signals |
| US8204253B1 (en) | 2008-06-30 | 2012-06-19 | Audience, Inc. | Self calibration of audio device |
| US8849231B1 (en) | 2007-08-08 | 2014-09-30 | Audience, Inc. | System and method for adaptive power control |
| US8949120B1 (en) | 2006-05-25 | 2015-02-03 | Audience, Inc. | Adaptive noise cancelation |
| US8259926B1 (en) | 2007-02-23 | 2012-09-04 | Audience, Inc. | System and method for 2-channel and 3-channel acoustic echo cancellation |
| US8880180B2 (en) | 2007-07-13 | 2014-11-04 | Cochlear Limited | Assessing neural survival |
| US8189766B1 (en) | 2007-07-26 | 2012-05-29 | Audience, Inc. | System and method for blind subband acoustic echo cancellation postfiltering |
| US8180064B1 (en) | 2007-12-21 | 2012-05-15 | Audience, Inc. | System and method for providing voice equalization |
| US8143620B1 (en) | 2007-12-21 | 2012-03-27 | Audience, Inc. | System and method for adaptive classification of audio sources |
| US8194882B2 (en) | 2008-02-29 | 2012-06-05 | Audience, Inc. | System and method for providing single microphone noise suppression fallback |
| US8355511B2 (en) | 2008-03-18 | 2013-01-15 | Audience, Inc. | System and method for envelope-based acoustic echo cancellation |
| US8774423B1 (en) | 2008-06-30 | 2014-07-08 | Audience, Inc. | System and method for controlling adaptivity of signal modification using a phantom coefficient |
| US8521530B1 (en) | 2008-06-30 | 2013-08-27 | Audience, Inc. | System and method for enhancing a monaural audio signal |
| CN102186528B (zh) * | 2008-10-15 | 2013-08-07 | Med-El电气医疗器械有限公司 | 内耳给药装置 |
| CN102271754B (zh) | 2008-11-10 | 2014-07-16 | Med-El电气医疗器械有限公司 | 填充水凝胶的药物递送储器 |
| DK2425638T3 (da) * | 2009-04-30 | 2014-01-20 | Widex As | Indgangsomformer til et høreapparat og signal-omformningsfremgangsmåde |
| US20110257704A1 (en) * | 2009-10-23 | 2011-10-20 | Med-El Elektromedizinische Geraete Gmbh | Equal Loudness Contour with Channel Specific Map Laws |
| US20110098784A1 (en) * | 2009-10-23 | 2011-04-28 | Med-El Elektromedizinische Geraete Gmbh | Channel-Specific Loudness Mapping for Prosthetic Hearing Systems |
| US9008329B1 (en) | 2010-01-26 | 2015-04-14 | Audience, Inc. | Noise reduction using multi-feature cluster tracker |
| JP5351304B2 (ja) | 2012-04-19 | 2013-11-27 | ファナック株式会社 | Δς変調型ａｄ変換器を有するモータ制御装置 |
| ITTO20120530A1 (it) | 2012-06-19 | 2013-12-20 | Inst Rundfunktechnik Gmbh | Dynamikkompressor |
| US20130345775A1 (en) * | 2012-06-21 | 2013-12-26 | Cochlear Limited | Determining Control Settings for a Hearing Prosthesis |
| US9640194B1 (en) | 2012-10-04 | 2017-05-02 | Knowles Electronics, Llc | Noise suppression for speech processing based on machine-learning mask estimation |
| US9536540B2 (en) | 2013-07-19 | 2017-01-03 | Knowles Electronics, Llc | Speech signal separation and synthesis based on auditory scene analysis and speech modeling |
| DE112015003945T5 (de) | 2014-08-28 | 2017-05-11 | Knowles Electronics, Llc | Mehrquellen-Rauschunterdrückung |
| CN107924072B (zh) * | 2015-08-11 | 2020-03-13 | Med-El电气医疗器械有限公司 | 多信道光电机械刺激 |
| WO2017057296A1 (ja) | 2015-09-28 | 2017-04-06 | 旭化成エレクトロニクス株式会社 | ハウリング抑制装置 |
| DE102022111300A1 (de) * | 2022-05-06 | 2023-11-09 | Elevear GmbH | Vorrichtung zur Reduzierung des Rauschens bei der Wiedergabe eines Audiosignals mit einem Kopfhörer oder Hörgerät und entsprechendes Verfahren |
| US12034619B2 (en) * | 2022-07-11 | 2024-07-09 | Viavi Solutions Inc. | Upstream signal leakage detection in high-split cable network |
| WO2025216112A1 (ja) * | 2024-04-12 | 2025-10-16 | パナソニックＩｐマネジメント株式会社 | 信号処理方法、信号処理装置、およびプログラム |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5027306A (en) * | 1989-05-12 | 1991-06-25 | Dattorro Jon C | Decimation filter as for a sigma-delta analog-to-digital converter |
| US5012245A (en) * | 1989-10-04 | 1991-04-30 | At&T Bell Laboratories | Integral switched capacitor FIR filter/digital-to-analog converter for sigma-delta encoded digital audio |
| US5227991A (en) * | 1991-11-20 | 1993-07-13 | Motorola, Inc. | Comb filter including a data overflow monitor, and a radio including the same |
| US5323157A (en) * | 1993-01-15 | 1994-06-21 | Motorola, Inc. | Sigma-delta digital-to-analog converter with reduced noise |
| US5357252A (en) * | 1993-03-22 | 1994-10-18 | Motorola, Inc. | Sigma-delta modulator with improved tone rejection and method therefor |
| US5408235A (en) * | 1994-03-07 | 1995-04-18 | Intel Corporation | Second order Sigma-Delta based analog to digital converter having superior analog components and having a programmable comb filter coupled to the digital signal processor |
| US5549658A (en) * | 1994-10-24 | 1996-08-27 | Advanced Bionics Corporation | Four-Channel cochlear system with a passive, non-hermetically sealed implant |
| US5601617A (en) * | 1995-04-26 | 1997-02-11 | Advanced Bionics Corporation | Multichannel cochlear prosthesis with flexible control of stimulus waveforms |
| US5626629A (en) * | 1995-05-31 | 1997-05-06 | Advanced Bionics Corporation | Programming of a speech processor for an implantable cochlear stimulator |
| US5731769A (en) * | 1995-12-04 | 1998-03-24 | Motorola, Inc. | Multi-rate digital filter apparatus and method for sigma-delta conversion processes |
-
1998
- 1998-04-28 WO PCT/US1998/008520 patent/WO1998049775A1/en not_active Ceased
- 1998-04-28 JP JP54728498A patent/JP4293639B2/ja not_active Expired - Fee Related
- 1998-04-28 AU AU71673/98A patent/AU750976B2/en not_active Expired
- 1998-04-28 US US09/067,673 patent/US5983139A/en not_active Expired - Lifetime
- 1998-04-28 CA CA002287261A patent/CA2287261C/en not_active Expired - Fee Related
- 1998-04-28 EP EP98918820A patent/EP0979554B1/en not_active Expired - Lifetime
- 1998-04-28 AT AT98918820T patent/ATE248459T1/de active
- 1998-04-28 DE DE69817555T patent/DE69817555T2/de not_active Expired - Lifetime
-
1999
- 1999-07-26 US US09/360,547 patent/US6182103B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0979554B1 (en) | 2003-08-27 |
| CA2287261A1 (en) | 1998-11-05 |
| WO1998049775A1 (en) | 1998-11-05 |
| US6182103B1 (en) | 2001-01-30 |
| DE69817555D1 (de) | 2003-10-02 |
| AU7167398A (en) | 1998-11-24 |
| ATE248459T1 (de) | 2003-09-15 |
| JP2002511986A (ja) | 2002-04-16 |
| JP4293639B2 (ja) | 2009-07-08 |
| DE69817555T2 (de) | 2004-06-17 |
| AU750976B2 (en) | 2002-08-01 |
| US5983139A (en) | 1999-11-09 |
| EP0979554A1 (en) | 2000-02-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |