DE69413584D1 - Sigma-Delta-Modulator mit erhöhter Tonunterdrückung und dazugehöriges Verfahren - Google Patents

Sigma-Delta-Modulator mit erhöhter Tonunterdrückung und dazugehöriges Verfahren

Info

Publication number
DE69413584D1
DE69413584D1 DE69413584T DE69413584T DE69413584D1 DE 69413584 D1 DE69413584 D1 DE 69413584D1 DE 69413584 T DE69413584 T DE 69413584T DE 69413584 T DE69413584 T DE 69413584T DE 69413584 D1 DE69413584 D1 DE 69413584D1
Authority
DE
Germany
Prior art keywords
delta modulator
associated method
sigma delta
sound suppression
increased sound
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
Application number
DE69413584T
Other languages
English (en)
Inventor
Robert C Ledzius
James S Irwin
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.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Application granted granted Critical
Publication of DE69413584D1 publication Critical patent/DE69413584D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/322—Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M3/324—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by means or methods for compensating or preventing more than one type of error at a time, e.g. by synchronisation or using a ratiometric arrangement
    • H03M3/344—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by means or methods for compensating or preventing more than one type of error at a time, e.g. by synchronisation or using a ratiometric arrangement by filtering other than the noise-shaping inherent to delta-sigma modulators, e.g. anti-aliasing
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M1/0617—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence
    • H03M1/0626—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence by filtering
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/322—Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M3/358—Continuously compensating for, or preventing, undesired influence of physical parameters of non-linear distortion, e.g. instability
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/39—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators
    • H03M3/412—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution
    • H03M3/422—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only
    • H03M3/43—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only the quantiser being a single bit one
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/39—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators
    • H03M3/436—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type
    • H03M3/438—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type the modulator having a higher order loop filter in the feedforward path
    • H03M3/454—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type the modulator having a higher order loop filter in the feedforward path with distributed feedback, i.e. with feedback paths from the quantiser output to more than one filter stage
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/458—Analogue/digital converters using delta-sigma modulation as an intermediate step
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/50—Digital/analogue converters using delta-sigma modulation as an intermediate step
DE69413584T 1993-03-22 1994-02-17 Sigma-Delta-Modulator mit erhöhter Tonunterdrückung und dazugehöriges Verfahren Expired - Lifetime DE69413584D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/034,967 US5357252A (en) 1993-03-22 1993-03-22 Sigma-delta modulator with improved tone rejection and method therefor

Publications (1)

Publication Number Publication Date
DE69413584D1 true DE69413584D1 (de) 1998-11-05

Family

ID=21879783

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69413584T Expired - Lifetime DE69413584D1 (de) 1993-03-22 1994-02-17 Sigma-Delta-Modulator mit erhöhter Tonunterdrückung und dazugehöriges Verfahren

Country Status (7)

Country Link
US (1) US5357252A (de)
EP (1) EP0617516B1 (de)
JP (1) JP2998555B2 (de)
KR (1) KR100276790B1 (de)
CN (1) CN1051414C (de)
DE (1) DE69413584D1 (de)
TW (1) TW241417B (de)

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US5574452A (en) * 1994-02-15 1996-11-12 Rockwell International Corporation Single bit bandpass analog-to-digital converter
US5585727A (en) * 1995-01-17 1996-12-17 Western Atlas International, Inc. Apparatus for measuring resistivity of an earth formation using delta-sigma digital signal generation and sigma-delta digital detection system
DE69616222T2 (de) * 1995-04-03 2002-07-18 Koninkl Philips Electronics Nv Vorrichtung zur konversion von quadratursignalen
US5777512A (en) * 1996-06-20 1998-07-07 Tripath Technology, Inc. Method and apparatus for oversampled, noise-shaping, mixed-signal processing
US5729225A (en) * 1996-09-23 1998-03-17 Motorola, Inc. Method and apparatus for asynchronous digital mixing
AU750976B2 (en) * 1997-05-01 2002-08-01 Med-El Elektromedizinische Gerate Ges.M.B.H. Apparatus and method for a low power digital filter bank
US5835038A (en) * 1997-05-08 1998-11-10 Burr-Brown Corporation DC dither circuitry and method for delta-sigma modulator
US6603812B1 (en) * 1998-08-17 2003-08-05 Linear Technology Corporation Hardware implementation of a decimating finite impulse response filter
US6885326B2 (en) * 1999-02-04 2005-04-26 Med-El Elektromedizinische Geraeta Gmbh Accumulator for adaptive Σ-Δ modulation
US6535153B1 (en) * 1999-02-04 2003-03-18 Med-El Electromedizinische Gerate Ges.M.B.H. Adaptive sigma-delta modulation with one-bit quantization
US6137429A (en) * 1999-03-08 2000-10-24 Motorola, Inc. Circuit and method for attenuating noise in a data converter
IT1313392B1 (it) * 1999-07-19 2002-07-23 St Microelectronics Srl Convertitore ea analogico/digitalte con dither adattativo.
JP3407871B2 (ja) * 1999-09-17 2003-05-19 日本電気株式会社 アナログデジタル混在δς変調器
US6326912B1 (en) * 1999-09-24 2001-12-04 Akm Semiconductor, Inc. Analog-to-digital conversion using a multi-bit analog delta-sigma modulator combined with a one-bit digital delta-sigma modulator
WO2003052939A2 (en) * 2001-12-18 2003-06-26 Koninklijke Philips Electronics N.V. Sigma delta a/d converter with firdac converter
DE60215298T2 (de) 2002-03-20 2007-02-08 Freescale Semiconductor, Inc., Austin Analog-Digital Sigma-Delta Modulator mit FIR-Filter
WO2003084074A1 (en) 2002-03-28 2003-10-09 Med-El Elektromedizinische Geräte G.M.B.H. A system and method for adaptive sigma-delta modulation
US7034728B2 (en) * 2004-08-11 2006-04-25 Raytheon Company Bandpass delta-sigma modulator with distributed feedforward paths
WO2006023726A1 (en) * 2004-08-19 2006-03-02 Intrinsix Corporation Hybrid heterodyne transmitters and receivers
KR100801034B1 (ko) * 2006-02-07 2008-02-04 삼성전자주식회사 지연된 클럭 신호들을 이용하여 시그마-델타 변조시노이즈을 줄이는 방법과 이를 이용한 프랙셔널 분주 방식의위상고정루프
WO2007120400A1 (en) * 2006-04-16 2007-10-25 Intrinsix Corporation Mismatch-shaping dynamic element matching systems and methods for multi-bit sigma-delta data converters
US7423567B2 (en) * 2006-09-12 2008-09-09 Cirrus Logic, Inc. Analog-to-digital converter (ADC) having a reduced number of quantizer output levels
US7375666B2 (en) * 2006-09-12 2008-05-20 Cirrus Logic, Inc. Feedback topology delta-sigma modulator having an AC-coupled feedback path
US8195221B2 (en) * 2008-06-30 2012-06-05 Intel Corporation Loop delay compensation for continuous time sigma delta analog to digital converter
GB2466675B (en) 2009-01-06 2013-03-06 Skype Speech coding
GB2466671B (en) * 2009-01-06 2013-03-27 Skype Speech encoding
GB2466672B (en) * 2009-01-06 2013-03-13 Skype Speech coding
GB2466673B (en) * 2009-01-06 2012-11-07 Skype Quantization
GB2466670B (en) * 2009-01-06 2012-11-14 Skype Speech encoding
GB2466674B (en) 2009-01-06 2013-11-13 Skype Speech coding
GB2466669B (en) * 2009-01-06 2013-03-06 Skype Speech coding
US7956783B2 (en) * 2009-01-29 2011-06-07 Analog Devices, Inc. Analog-to-digital converter using digital output as dither
US7903010B1 (en) * 2009-08-31 2011-03-08 Cirrus Logic, Inc. Delta-sigma analog-to-digital converter (ADC) having a serialized quantizer output
US8452606B2 (en) * 2009-09-29 2013-05-28 Skype Speech encoding using multiple bit rates
US8643524B1 (en) 2012-09-27 2014-02-04 Cirrus Logic, Inc. Feed-forward analog-to-digital converter (ADC) with a reduced number of amplifiers and feed-forward signal paths
US9231606B2 (en) * 2013-08-20 2016-01-05 Skyworks Solutions, Inc. Dither-less error feedback fractional-N frequency synthesizer systems and methods
KR101742131B1 (ko) 2016-10-17 2017-05-31 성균관대학교산학협력단 델타-시그마 변조기
KR102025814B1 (ko) * 2017-11-30 2019-09-26 한국과학기술원 지연 기반 잡음 제거 가능한 스터디 메쉬 아날로그 디지털 컨버터 및 그 동작 방법
KR101982209B1 (ko) * 2018-06-14 2019-05-24 고려대학교 산학협력단 연속 시간 델타-시그마 변조기
US11554580B1 (en) 2021-09-09 2023-01-17 Illinois Tool Works Inc. Squeegee drip collection system for stencil printer

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CA1271995A (en) * 1984-07-05 1990-07-24 Nec Corporation Method and apparatus for converting an analog signal to a digital signal using an oversampling technique
US4876543A (en) * 1988-05-31 1989-10-24 Motorola, Inc. Multi-rate cascaded noise shaping modulator
JPH02134010A (ja) * 1988-11-15 1990-05-23 Sony Corp 信号処理装置
US5039989A (en) * 1989-10-27 1991-08-13 Crystal Semiconductor Corporation Delta-sigma analog-to-digital converter with chopper stabilization at the sampling frequency
JPH03143027A (ja) * 1989-10-27 1991-06-18 Fujitsu Ltd ３値出力形ｄ／ａ変換器
DE69107059T2 (de) * 1990-01-31 1995-08-24 Analog Devices Inc Sigma-delta-modulator.
US5148167A (en) * 1990-04-06 1992-09-15 General Electric Company Sigma-delta oversampled analog-to-digital converter network with chopper stabilization
US5057840A (en) * 1990-12-26 1991-10-15 Motorola, Inc. Σ-Δmodulator for digital-to-analog converter
DE4106928A1 (de) * 1991-03-05 1992-09-10 Blaupunkt Werke Gmbh Autoradio

Also Published As

Publication number Publication date
CN1051414C (zh) 2000-04-12
JPH0715340A (ja) 1995-01-17
KR100276790B1 (ko) 2001-01-15
EP0617516A1 (de) 1994-09-28
KR940023041A (ko) 1994-10-22
US5357252A (en) 1994-10-18
TW241417B (de) 1995-02-21
CN1096148A (zh) 1994-12-07
JP2998555B2 (ja) 2000-01-11
EP0617516B1 (de) 1998-09-30

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