DE69002766T2 - Dezimationsfilter für einen sigma-delta-analog-digital-wandler. - Google Patents

Dezimationsfilter für einen sigma-delta-analog-digital-wandler.

Info

Publication number
DE69002766T2
DE69002766T2 DE90907875T DE69002766T DE69002766T2 DE 69002766 T2 DE69002766 T2 DE 69002766T2 DE 90907875 T DE90907875 T DE 90907875T DE 69002766 T DE69002766 T DE 69002766T DE 69002766 T2 DE69002766 T2 DE 69002766T2
Authority
DE
Germany
Prior art keywords
delta
sigma
analog
digital converter
decimation filter
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
Application number
DE90907875T
Other languages
English (en)
Other versions
DE69002766D1 (de
Inventor
Jon Dattorro
Albert Charpentier
David Andreas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ensoniq Corp
Original Assignee
Ensoniq Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ensoniq Corp filed Critical Ensoniq Corp
Application granted granted Critical
Publication of DE69002766D1 publication Critical patent/DE69002766D1/de
Publication of DE69002766T2 publication Critical patent/DE69002766T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • H03H17/0621—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing
    • H03H17/0635—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies
    • H03H17/0685—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies the ratio being rational
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0223—Computation saving measures; Accelerating measures
    • H03H17/0227—Measures concerning the coefficients
    • 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
    • H03H17/0614—Non-recursive filters using Delta-modulation
DE90907875T 1989-05-12 1990-05-08 Dezimationsfilter für einen sigma-delta-analog-digital-wandler. Expired - Fee Related DE69002766T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/351,449 US5027306A (en) 1989-05-12 1989-05-12 Decimation filter as for a sigma-delta analog-to-digital converter

Publications (2)

Publication Number Publication Date
DE69002766D1 DE69002766D1 (de) 1993-09-16
DE69002766T2 true DE69002766T2 (de) 1993-11-25

Family

ID=23380983

Family Applications (1)

Application Number Title Priority Date Filing Date
DE90907875T Expired - Fee Related DE69002766T2 (de) 1989-05-12 1990-05-08 Dezimationsfilter für einen sigma-delta-analog-digital-wandler.

Country Status (5)

Country Link
US (1) US5027306A (de)
EP (1) EP0472600B1 (de)
AU (1) AU5648890A (de)
DE (1) DE69002766T2 (de)
WO (1) WO1990013942A1 (de)

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EP0476215B1 (de) * 1990-09-18 1995-12-13 ALCATEL BELL Naamloze Vennootschap Mehrkanaliger Taktfrequenzreduzierer
US5142286A (en) * 1990-10-01 1992-08-25 General Electric Company Read-out photodiodes using sigma-delta oversampled analog-to-digital converters
EP0523306B1 (de) * 1991-07-17 1995-10-25 International Business Machines Corporation Dezimationsfilter für Sigma-Delta Konverter und Datenendeinrichtung mit einem solchen Filter
EP0523307B1 (de) * 1991-07-17 1996-03-27 International Business Machines Corporation Dezimationsfilter für Sigma Delta Konverter und Datenendeinrichtung mit einem solchen Filter
US5233665A (en) * 1991-12-17 1993-08-03 Gary L. Vaughn Phonetic equalizer system
US5369403A (en) * 1992-09-01 1994-11-29 The State Of Oregon Acting By And Through The State Board Of Higher Education On Behalf Of Oregon State University Dual quantization oversampling digital-to-analog converter
DE4241812A1 (de) * 1992-12-11 1994-06-16 Bosch Gmbh Robert Verfahren zur adaptiven Quantisierung eines Eingangswertebereiches
US5446917A (en) * 1993-03-03 1995-08-29 General Electric Company Programmable length decimation filter as for sigma-delta modulators
US5548540A (en) * 1994-06-24 1996-08-20 General Electric Company Decimation filter having a selectable decimation ratio
US5621675A (en) * 1994-11-02 1997-04-15 Advanced Micro Devices, Inc. Digital decimation and compensation filter system
KR0181165B1 (ko) * 1995-06-29 1999-04-01 김광호 유한장 임펄스응답 필터 및 그 필터링 방법
ZA965340B (en) 1995-06-30 1997-01-27 Interdigital Tech Corp Code division multiple access (cdma) communication system
US7123600B2 (en) 1995-06-30 2006-10-17 Interdigital Technology Corporation Initial power control for spread-spectrum communications
US7929498B2 (en) 1995-06-30 2011-04-19 Interdigital Technology Corporation Adaptive forward power control and adaptive reverse power control for spread-spectrum communications
US7020111B2 (en) 1996-06-27 2006-03-28 Interdigital Technology Corporation System for using rapid acquisition spreading codes for spread-spectrum communications
US6885652B1 (en) 1995-06-30 2005-04-26 Interdigital Technology Corporation Code division multiple access (CDMA) communication system
US5751615A (en) * 1995-11-14 1998-05-12 Advanced Micro Devices, Inc. Implementation of a digital decimation filter and method
US5732004A (en) * 1995-11-14 1998-03-24 Advanced Micro Devices, Inc. DSP architecture for a FIR-type filter and method
US6044162A (en) * 1996-12-20 2000-03-28 Sonic Innovations, Inc. Digital hearing aid using differential signal representations
ATE248459T1 (de) * 1997-05-01 2003-09-15 Med El Elektromed Geraete Gmbh Verfahren und gerät für eine digitale filterbank mit geringem stromverbrauch
US6023718A (en) * 1997-05-09 2000-02-08 Matsushita Electric Industrial Co., Ltd. High speed interpolation filter and a method thereof
US6041339A (en) * 1998-03-27 2000-03-21 Ess Technology, Inc. Efficient decimation filtering
US6594284B1 (en) * 1998-09-16 2003-07-15 Cirrus Logic, Inc. Network synchronization
US6535153B1 (en) * 1999-02-04 2003-03-18 Med-El Electromedizinische Gerate Ges.M.B.H. Adaptive sigma-delta modulation with one-bit quantization
US6885326B2 (en) * 1999-02-04 2005-04-26 Med-El Elektromedizinische Geraeta Gmbh Accumulator for adaptive Σ-Δ modulation
US6408318B1 (en) 1999-04-05 2002-06-18 Xiaoling Fang Multiple stage decimation filter
US6163287A (en) * 1999-04-05 2000-12-19 Sonic Innovations, Inc. Hybrid low-pass sigma-delta modulator
US6445321B2 (en) 1999-04-05 2002-09-03 Sonic Innovations, Inc. Hybrid low-pass sigma-delta modulator
US6480610B1 (en) * 1999-09-21 2002-11-12 Sonic Innovations, Inc. Subband acoustic feedback cancellation in hearing aids
DE19961630A1 (de) * 1999-12-14 2001-07-05 Siemens Ag Verfahren und Anordnung zum Erfassen und digitalen Übertragen von analogen Ausgangsmeßgrößen mehrerer Wandler
US6757395B1 (en) 2000-01-12 2004-06-29 Sonic Innovations, Inc. Noise reduction apparatus and method
US6857002B1 (en) * 2000-07-05 2005-02-15 Cirrus Logic, Inc. Integrated circuit with a mode control selecting settled and unsettled output from a filter
US20020003765A1 (en) * 2000-07-10 2002-01-10 Masaharu Matsumoto Signal processing device and signal processing method
US20030055859A1 (en) * 2001-05-04 2003-03-20 Southern Methodist University Fast IEEE floating-point adder
DE10135089A1 (de) * 2001-07-11 2003-01-23 Siemens Ag Verfahren und Anordnung zum Erfassen und digitalen Übertragen von analogen Ausgangsmessgrößen mehrerer Wandler
EP1488525B1 (de) 2002-03-28 2010-08-18 Med-El Elektromedizinische Geräte GmbH System und verfahren für adaptive sigma-delta modulation
US20040103133A1 (en) * 2002-11-27 2004-05-27 Spectrum Signal Processing Inc. Decimating filter
DE602004009558T2 (de) * 2003-04-29 2008-02-07 Nxp B.V. Digitale filteranordnung
WO2005096502A1 (en) * 2004-04-02 2005-10-13 Kaben Research Inc. Multiple stage delta sigma modulators
US8949120B1 (en) 2006-05-25 2015-02-03 Audience, Inc. Adaptive noise cancelation
US9795794B2 (en) * 2007-08-10 2017-10-24 Med-El Elektromedizinische Geraete Gmbh Pulse width adaptation for inductive links
CN101820287B (zh) * 2009-07-24 2012-11-21 北京工业大学 一种应用于双声道音频δ-∑数模转换器的插值滤波器
US8526628B1 (en) * 2009-12-14 2013-09-03 Audience, Inc. Low latency active noise cancellation system
US8718290B2 (en) 2010-01-26 2014-05-06 Audience, Inc. Adaptive noise reduction using level cues
US8538035B2 (en) 2010-04-29 2013-09-17 Audience, Inc. Multi-microphone robust noise suppression
US8473287B2 (en) 2010-04-19 2013-06-25 Audience, Inc. Method for jointly optimizing noise reduction and voice quality in a mono or multi-microphone system
US8781137B1 (en) 2010-04-27 2014-07-15 Audience, Inc. Wind noise detection and suppression
US8447596B2 (en) 2010-07-12 2013-05-21 Audience, Inc. Monaural noise suppression based on computational auditory scene analysis
SG11201400789UA (en) 2011-09-30 2014-04-28 Creative Tech Ltd A novel efficient digital microphone decimation filter architecture
GB2555422B (en) * 2016-10-26 2021-12-01 Xmos Ltd Capturing and processing sound signals

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Publication number Priority date Publication date Assignee Title
FR2447646A1 (fr) * 1979-01-29 1980-08-22 Materiel Telephonique Filtre numerique transversal pour traitement en temps partage sur plusieurs canaux
US4811262A (en) * 1986-09-19 1989-03-07 Rockwell International Corporation Distributed arithmetic realization of second-order normal-form digital filter
JPH0612862B2 (ja) * 1986-09-29 1994-02-16 ヤマハ株式会社 デイジタルフイルタ
US4775851A (en) * 1987-06-01 1988-10-04 Motorola, Inc. Multiplierless decimating low-pass filter for a noise-shaping A/D converter

Also Published As

Publication number Publication date
US5027306A (en) 1991-06-25
EP0472600A1 (de) 1992-03-04
DE69002766D1 (de) 1993-09-16
EP0472600B1 (de) 1993-08-11
AU5648890A (en) 1990-11-29
WO1990013942A1 (en) 1990-11-15

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee