WO2001099290A3 - Digital noise-shaping filter with real coefficients and method for making the same - Google Patents

Digital noise-shaping filter with real coefficients and method for making the same Download PDF

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Publication number
WO2001099290A3
WO2001099290A3 PCT/KR2001/001069 KR0101069W WO0199290A3 WO 2001099290 A3 WO2001099290 A3 WO 2001099290A3 KR 0101069 W KR0101069 W KR 0101069W WO 0199290 A3 WO0199290 A3 WO 0199290A3
Authority
WO
WIPO (PCT)
Prior art keywords
digital
noise
shaping filter
real coefficients
making
Prior art date
Application number
PCT/KR2001/001069
Other languages
French (fr)
Other versions
WO2001099290A2 (en
Inventor
Ducksoo Lee
Yeongha Choi
Sejin Doo
Kyoungsoo Park
Koengmo Sung
Original Assignee
Neofidelity Lnc
Ducksoo Lee
Yeongha Choi
Sejin Doo
Kyoungsoo Park
Koengmo Sung
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 Neofidelity Lnc, Ducksoo Lee, Yeongha Choi, Sejin Doo, Kyoungsoo Park, Koengmo Sung filed Critical Neofidelity Lnc
Priority to US10/069,340 priority Critical patent/US6657572B2/en
Priority to AU66380/01A priority patent/AU6638001A/en
Publication of WO2001099290A2 publication Critical patent/WO2001099290A2/en
Publication of WO2001099290A3 publication Critical patent/WO2001099290A3/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/125—Discriminating pulses
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/3002—Conversion to or from differential modulation
    • H03M7/3004—Digital delta-sigma modulation
    • H03M7/3015—Structural details of digital delta-sigma modulators
    • H03M7/3031—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path
    • H03M7/3042—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path the modulator being of the error feedback type, i.e. having loop filter stages in the feedback path only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/3002—Conversion to or from differential modulation
    • H03M7/3004—Digital delta-sigma modulation
    • H03M7/3015—Structural details of digital delta-sigma modulators
    • H03M7/302—Structural details of digital delta-sigma modulators characterised by the number of quantisers and their type and resolution
    • H03M7/3024—Structural details of digital delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only
    • H03M7/3028—Structural details of digital 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

Abstract

A digital noise-shaping filter with real coefficients for delta-sigma data converters used in a digital amplifier, 1-bit digital/analog converter, 1-bit analog/digital converter and the like, and a method for making the same. The present digital noise-shaping filter has improved noise suppression performance and system stability and reduced calculation complexity. To this end, the digital noise-shaping filter comprises a noise transfer function expressed by NTF(z) = -1+a1z-1+a2z-2 + Μ + a¿Nz?-N. The noise transfer function has optimum real coefficients or real coefficients approximating them.
PCT/KR2001/001069 2000-06-23 2001-06-22 Digital noise-shaping filter with real coefficients and method for making the same WO2001099290A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US10/069,340 US6657572B2 (en) 2000-06-23 2001-06-22 Digital noise-shaping filter with real coefficients and method for making the same
AU66380/01A AU6638001A (en) 2000-06-23 2001-06-22 Digital noise-shaping filter with real coefficients and method for making the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR2000/34951 2000-06-23
KR10-2000-0034951A KR100365136B1 (en) 2000-06-23 2000-06-23 Digital noise-shaping filter and method making the same

Publications (2)

Publication Number Publication Date
WO2001099290A2 WO2001099290A2 (en) 2001-12-27
WO2001099290A3 true WO2001099290A3 (en) 2002-06-20

Family

ID=19673591

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2001/001069 WO2001099290A2 (en) 2000-06-23 2001-06-22 Digital noise-shaping filter with real coefficients and method for making the same

Country Status (4)

Country Link
US (1) US6657572B2 (en)
KR (1) KR100365136B1 (en)
AU (1) AU6638001A (en)
WO (1) WO2001099290A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003030373A1 (en) * 2001-09-28 2003-04-10 Sony Corporation Delta-sigma modulation apparatus and signal amplification apparatus
KR100434236B1 (en) * 2001-10-11 2004-06-04 페어차일드코리아반도체 주식회사 A motor control driving circuit
US8098948B1 (en) 2007-12-21 2012-01-17 Zoran Corporation Method, apparatus, and system for reducing blurring in an image

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0472907A (en) * 1990-07-13 1992-03-06 Sony Corp Coefficient setting method for noise shaping filter
US5581253A (en) * 1995-08-03 1996-12-03 Advanced Micro Devices Implementation and method for a digital sigma-delta modulator

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPO316196A0 (en) * 1996-10-23 1996-11-14 Lake Dsp Pty Limited Method and apparatus for processing sigma-delta modulated signals
DE19722434C1 (en) * 1997-05-28 1998-10-01 Siemens Ag Highly linear digital/analog conversion device
US6480129B1 (en) * 1999-02-23 2002-11-12 Cirrus Logic, Inc. Methods and apparatus for correction of higher order delta sigma converters
US6414613B1 (en) * 2000-01-05 2002-07-02 Motorola, Inc. Apparatus for noise shaping a pulse width modulation (PWM) signal and method therefor
US6346898B1 (en) * 2000-08-07 2002-02-12 Audio Logic, Inc. Multilevel analog to digital data converter having dynamic element matching in a reference data path

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0472907A (en) * 1990-07-13 1992-03-06 Sony Corp Coefficient setting method for noise shaping filter
US5581253A (en) * 1995-08-03 1996-12-03 Advanced Micro Devices Implementation and method for a digital sigma-delta modulator

Also Published As

Publication number Publication date
US6657572B2 (en) 2003-12-02
US20030086500A1 (en) 2003-05-08
AU6638001A (en) 2002-01-02
WO2001099290A2 (en) 2001-12-27
KR20020000368A (en) 2002-01-05
KR100365136B1 (en) 2003-01-24

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