DK1101278T3 - Fremgangsmåde til dæmpning af nulgennemgangsforvrængning og stöj i en forstærker, en forstærker, samt anvendelser af fremgangsmåde og forstærkeren - Google Patents

Fremgangsmåde til dæmpning af nulgennemgangsforvrængning og stöj i en forstærker, en forstærker, samt anvendelser af fremgangsmåde og forstærkeren

Info

Publication number
DK1101278T3
DK1101278T3 DK99934515T DK99934515T DK1101278T3 DK 1101278 T3 DK1101278 T3 DK 1101278T3 DK 99934515 T DK99934515 T DK 99934515T DK 99934515 T DK99934515 T DK 99934515T DK 1101278 T3 DK1101278 T3 DK 1101278T3
Authority
DK
Denmark
Prior art keywords
amplifier
class
audio signal
noise
pulse
Prior art date
Application number
DK99934515T
Other languages
English (en)
Inventor
Lars Risbo
Niels Anderskouv
Original Assignee
Texas Instr Denmark As
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 Texas Instr Denmark As filed Critical Texas Instr Denmark As
Application granted granted Critical
Publication of DK1101278T3 publication Critical patent/DK1101278T3/da

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/26—Modifications of amplifiers to reduce influence of noise generated by amplifying elements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217—Class D power amplifiers; Switching amplifiers
    • H03F3/2173—Class D power amplifiers; Switching amplifiers of the bridge type
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/03—Indexing scheme relating to amplifiers the amplifier being designed for audio applications
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/351—Pulse width modulation being used in an amplifying circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/372—Noise reduction and elimination in amplifier

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Amplifiers (AREA)
DK99934515T 1998-07-24 1999-07-23 Fremgangsmåde til dæmpning af nulgennemgangsforvrængning og stöj i en forstærker, en forstærker, samt anvendelser af fremgangsmåde og forstærkeren DK1101278T3 (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA199800974 1998-07-24
EP99934515A EP1101278B1 (en) 1998-07-24 1999-07-23 A method of attenuating zero crossing distortion and noise in an amplifier, an amplifier and uses of the method and the amplifier

Publications (1)

Publication Number Publication Date
DK1101278T3 true DK1101278T3 (da) 2006-09-25

Family

ID=8099602

Family Applications (1)

Application Number Title Priority Date Filing Date
DK99934515T DK1101278T3 (da) 1998-07-24 1999-07-23 Fremgangsmåde til dæmpning af nulgennemgangsforvrængning og stöj i en forstærker, en forstærker, samt anvendelser af fremgangsmåde og forstærkeren

Country Status (10)

Country Link
US (1) US6373336B1 (da)
EP (1) EP1101278B1 (da)
JP (1) JP2002521949A (da)
KR (1) KR20010071031A (da)
CN (1) CN1142625C (da)
AT (1) ATE328390T1 (da)
AU (1) AU5026799A (da)
DE (1) DE69931637T2 (da)
DK (1) DK1101278T3 (da)
WO (1) WO2000007291A2 (da)

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6693571B2 (en) 2000-05-10 2004-02-17 Cirrus Logic, Inc. Modulation of a digital input signal using a digital signal modulator and signal splitting
TW519792B (en) * 2000-08-30 2003-02-01 Cirrus Logic Inc Circuits and methods for reducing interference from switched mode circuits
US6605991B2 (en) 2001-08-30 2003-08-12 Motorola, Inc. Circuitry for creating a spectral null in a differential output switching amplifier and method therefor
CN1195353C (zh) * 2001-12-03 2005-03-30 方虎堂 脉冲面积调制数字功率处理方法及装置
JP2004032501A (ja) * 2002-06-27 2004-01-29 Pioneer Electronic Corp デジタル信号変換装置及び方法
US6940343B2 (en) * 2002-08-14 2005-09-06 Ami Semiconductor, Inc. Amplifier
AU2003263214A1 (en) * 2002-08-14 2004-03-03 Dspfactory Sa Amplifier
EP1578011B1 (en) * 2002-11-15 2007-02-07 Matsushita Electric Industrial Co., Ltd. Power amplifying apparatus
US6762704B1 (en) 2002-12-09 2004-07-13 Cirrus Logic, Inc. Modulation of a digital input signal using multiple digital signal modulators
JP4078543B2 (ja) * 2002-12-20 2008-04-23 ソニー株式会社 オーディオアンプ
US7193337B2 (en) * 2003-09-09 2007-03-20 Honeywell International Inc. System and method utilizing a solid state power controller (SSPC) for controlling an electrical load of a variable frequency three-phase power source
JP2005142780A (ja) * 2003-11-06 2005-06-02 Sony Corp 電力増幅回路
US7092534B2 (en) * 2004-03-02 2006-08-15 Via Telecom Co., Ltd. Method and system for reducing pop noise of a sound broadcasting instrument
US7308027B1 (en) 2004-04-21 2007-12-11 Cirrus Logic, Inc. Circuits and methods for reducing distortion and noise in pulse width modulation systems utilizing full-bridge drivers
US7492217B2 (en) * 2004-11-12 2009-02-17 Texas Instruments Incorporated On-the-fly introduction of inter-channel delay in a pulse-width-modulation amplifier
US7173483B2 (en) * 2005-03-04 2007-02-06 Aimtron Technology Corp. Low-distortion tri-state switching amplifier
TWI361559B (en) * 2005-03-07 2012-04-01 Monolithic Power Systems Inc Audio amplifier with high power and high efficiency
JP4802765B2 (ja) * 2005-03-18 2011-10-26 ヤマハ株式会社 Ｄ級増幅器
KR100565103B1 (ko) * 2005-05-10 2006-03-30 (주)유비아이사운드 스위칭 증폭기에서의 출력 펄스 폭 변조 방법 및 그 장치
SI1917713T1 (sl) * 2005-08-25 2018-11-30 Consarc Corporation Nadzor izhoda električnega pretvornika z modulirano impulzno širino
US7778324B2 (en) * 2005-11-18 2010-08-17 Harman International Industries, Incorporated System for dynamic time offsetting in interleaved power amplifiers
EP1952526A2 (en) * 2005-11-18 2008-08-06 Nxp B.V. Driving an inductive load
US8036402B2 (en) * 2005-12-15 2011-10-11 Harman International Industries, Incorporated Distortion compensation
EP1985013A4 (en) * 2006-01-24 2009-02-25 D2Audio Corp SYSTEM AND METHOD FOR IMPROVING EFFICIENCY IN A DIGITAL AMPLIFIER BY ADDING AN ULTRASONIC SIGNAL TO AN INPUT AUDIO SIGNAL
EP1971023B1 (en) 2007-03-15 2019-05-01 Harman Becker Automotive Systems GmbH Suppression of high-frequency perturbations in pulse-width modulation
JP4905234B2 (ja) * 2007-04-17 2012-03-28 ヤマハ株式会社 Ｄ級アンプ
JP4466695B2 (ja) * 2007-08-08 2010-05-26 ヤマハ株式会社 Ｄ級増幅回路
CN101931372B (zh) * 2009-06-24 2013-05-01 德信科技股份有限公司 具有二阶噪声滤除电路的d类放大器
KR101947597B1 (ko) * 2010-10-27 2019-02-14 인피니언 테크놀로지스 오스트리아 아게 멀티­레벨 펄스폭 변조를 사용하는 오디오 증폭기
JP5861442B2 (ja) * 2011-12-20 2016-02-16 ヤマハ株式会社 Ｄ級電力増幅器
US8907738B1 (en) 2012-06-21 2014-12-09 Cypress Semiconductor Corporation Suppressed carrier harmonic amplitude modulator
TWI479799B (zh) 2012-08-13 2015-04-01 Richtek Technology Corp 可降低零交叉失真的音訊信號處理電路及方法
CN103596106B (zh) * 2012-08-16 2016-09-21 立锜科技股份有限公司 音频信号处理电路及方法
CN103491485A (zh) * 2013-09-04 2014-01-01 国光电器股份有限公司 双音圈喇叭d类数字功放***及其信号处理方法
CN106535022B (zh) * 2016-12-07 2019-03-22 北京工业大学 一种带均衡器的具有功放功能的耳机降噪电路
CN113691224B (zh) * 2021-08-12 2024-07-05 上海艾为电子技术股份有限公司 数字音频功放电路、芯片及减小空闲音的方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2930907A1 (de) * 1979-07-30 1981-02-05 Siemens Ag Verfahren zur pulsbreitensteuerung eines gleichstrom-umkehrstellers und schaltungsanordnung zur durchfuehrung des verfahrens
US4326170A (en) * 1980-06-09 1982-04-20 Siemens Corporation High power and/or high voltage switching operational amplifier
JPS5967719A (ja) * 1982-10-09 1984-04-17 Nippon Gakki Seizo Kk パルス幅変調回路
JPH02177605A (ja) * 1988-12-28 1990-07-10 Pioneer Electron Corp パルス幅変調増幅回路
SE467331B (sv) * 1990-10-26 1992-06-29 Andersson & Baevholm Lab Audio-effektfoerstaerkare med pulsbreddsmodulering samt ett audio-effektsteg
US5767740A (en) * 1996-09-27 1998-06-16 Harris Corporation Switching amplifier closed loop dual comparator modulation technique
US6028944A (en) * 1997-03-04 2000-02-22 Compaq Computer Corporation Signal processing apparatus with selective power amplification
US5963086A (en) * 1997-08-08 1999-10-05 Velodyne Acoustics, Inc. Class D amplifier with switching control
US6262632B1 (en) * 1999-11-16 2001-07-17 Texas Instruments Incorporated Concept and method to enable filterless, efficient operation of Class-D amplifiers

Also Published As

Publication number Publication date
WO2000007291A2 (en) 2000-02-10
EP1101278B1 (en) 2006-05-31
AU5026799A (en) 2000-02-21
US6373336B1 (en) 2002-04-16
DE69931637D1 (de) 2006-07-06
CN1311918A (zh) 2001-09-05
DE69931637T2 (de) 2007-05-16
ATE328390T1 (de) 2006-06-15
JP2002521949A (ja) 2002-07-16
CN1142625C (zh) 2004-03-17
EP1101278A2 (en) 2001-05-23
KR20010071031A (ko) 2001-07-28
WO2000007291A3 (en) 2000-06-02

Similar Documents

Publication Publication Date Title
DK1101278T3 (da) Fremgangsmåde til dæmpning af nulgennemgangsforvrængning og stöj i en forstærker, en forstærker, samt anvendelser af fremgangsmåde og forstærkeren
AU709464B2 (en) Duobinary coding and modulation technique for optical communication systems
KR890001302A (ko) 데이타 송수신 시스템
KR920700521A (ko) 스테레오 합성기
WO2004059848A3 (en) Modulation of a digital input signal using a digital signal modulator and signal splitting
DE60039063D1 (de) Gigabit ethernet senderempfänger mit analoger eingangsschaltung
ATE392076T1 (de) Vorverzerrungsschema
ATE463881T1 (de) Matrixsymmetrieschaltung
KR100516014B1 (ko) Ｐｗｍ 입력신호들의 위상들이 다른 다중채널 디지털앰프
ATE422113T1 (de) Integrierte hf-schaltung zur amplitudenbeeinflussung von signalen
KR860007660A (ko) 잡음 저감 회로
ATE438972T1 (de) Zeichengabe mit mehreren taktleitungen
KR850008070A (ko) 적응대역폭 증폭기 및 그 방법
WO2023287487A3 (en) Processing signals using entanglement-assisted communication
ATE460770T1 (de) Blind-linearisierung unter anwendung von kreuz- modulation
US8917875B2 (en) Method for driving loudspeakers
US8331890B2 (en) Duty-to-voltage amplifier, FM receiver and method for amplifying a peak of a multiplexed signal
WO2003061122A3 (en) Differential amplifier circuit for regenerating complementary digital signals
KR100213072B1 (ko) 오디오 신호 기록 보상장치
CN111434033B (zh) 一种用于光通信设备中的放大器及其方法
JP2003526973A (ja) アナログ信号をディジタル信号に変換する方法
KR860002611Y1 (ko) CD 플레이어의 디-엠파시스(De-Euphasis) 제어회로
KR930018532A (ko) 음향신호의 전송채널스위칭장치
WO1999041831A1 (en) Apparatus for improved amplification of audio signals
Zhu et al. A Modified Adaptive Nonuniform Sampling Delta Modulation