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 forstærkerenInfo
- 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
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)
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)
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)
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 |
-
1999
- 1999-07-23 US US09/744,575 patent/US6373336B1/en not_active Expired - Lifetime
- 1999-07-23 AU AU50267/99A patent/AU5026799A/en not_active Abandoned
- 1999-07-23 KR KR1020017001091A patent/KR20010071031A/ko not_active Application Discontinuation
- 1999-07-23 DE DE69931637T patent/DE69931637T2/de not_active Expired - Lifetime
- 1999-07-23 WO PCT/DK1999/000418 patent/WO2000007291A2/en active IP Right Grant
- 1999-07-23 EP EP99934515A patent/EP1101278B1/en not_active Expired - Lifetime
- 1999-07-23 JP JP2000562998A patent/JP2002521949A/ja active Pending
- 1999-07-23 CN CNB998091081A patent/CN1142625C/zh not_active Expired - Lifetime
- 1999-07-23 AT AT99934515T patent/ATE328390T1/de not_active IP Right Cessation
- 1999-07-23 DK DK99934515T patent/DK1101278T3/da active
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 |
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