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DE3854406D1 - Schaltung zum Unterdrücken der Störimpulse in einem Audio-Verstärker. - Google Patents

Schaltung zum Unterdrücken der Störimpulse in einem Audio-Verstärker.

Info

Publication number
DE3854406D1
DE3854406D1 DE3854406T DE3854406T DE3854406D1 DE 3854406 D1 DE3854406 D1 DE 3854406D1 DE 3854406 T DE3854406 T DE 3854406T DE 3854406 T DE3854406 T DE 3854406T DE 3854406 D1 DE3854406 D1 DE 3854406D1
Authority
DE
Germany
Prior art keywords
suppressing
circuit
audio amplifier
interference pulses
pulses
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
DE3854406T
Other languages
English (en)
Other versions
DE3854406T2 (de
Inventor
Hiroaki Kawai
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.)
Toshiba Corp
Toshiba AVE Co Ltd
Original Assignee
Toshiba Corp
Toshiba AVE Co Ltd
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 Toshiba Corp, Toshiba AVE Co Ltd filed Critical Toshiba Corp
Publication of DE3854406D1 publication Critical patent/DE3854406D1/de
Application granted granted Critical
Publication of DE3854406T2 publication Critical patent/DE3854406T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
    • H03F3/183—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
    • H03F3/187—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only in integrated circuits
    • 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
    • H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • H03F1/305—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in case of switching on or off of a power supply
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
    • H03G3/348—Muting in response to a mechanical action or to power supply variations, e.g. during tuning; Click removal circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Multimedia (AREA)
  • Amplifiers (AREA)
DE3854406T 1987-03-06 1988-03-02 Schaltung zum Unterdrücken der Störimpulse in einem Audio-Verstärker. Expired - Lifetime DE3854406T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62051350A JP2585249B2 (ja) 1987-03-06 1987-03-06 音声増幅器のシヨツク音防止回路

Publications (2)

Publication Number Publication Date
DE3854406D1 true DE3854406D1 (de) 1995-10-12
DE3854406T2 DE3854406T2 (de) 1996-02-29

Family

ID=12884478

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3854406T Expired - Lifetime DE3854406T2 (de) 1987-03-06 1988-03-02 Schaltung zum Unterdrücken der Störimpulse in einem Audio-Verstärker.

Country Status (5)

Country Link
US (1) US4788508A (de)
EP (1) EP0281117B1 (de)
JP (1) JP2585249B2 (de)
KR (1) KR900007921B1 (de)
DE (1) DE3854406T2 (de)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5029005A (en) * 1990-04-25 1991-07-02 Rca Licensing Corporation Apparatus for the muting of an audio power amplifier in a standby mode
US5121076A (en) * 1991-05-06 1992-06-09 Thomson Consumer Electronics, Inc. Plural time constant signal control
US5199079A (en) * 1991-05-21 1993-03-30 Thomson Consumer Electronics, Inc. Supply voltage responsive audible transient (POP) suppression arrangement
EP0576770B1 (de) * 1992-05-22 1999-12-22 STMicroelectronics S.r.l. Abschaltsteuerschaltung für einen Audioverstärker
IT1268473B1 (it) * 1993-10-22 1997-03-04 St Microelectronics Srl Circuito di controllo della salita della tensione sul nodo di uscita di un amplificatore, all'accensione
TW252236B (en) * 1994-07-15 1995-07-21 Peavey Electronics Corp Power amplifier with clipping level control
US5917313A (en) * 1997-12-19 1999-06-29 Stmicroelectronics, Inc. DC-to-DC converter with soft-start error amplifier and associated method
JP5081376B2 (ja) * 2005-05-25 2012-11-28 ミツミ電機株式会社 増幅回路
TWI318495B (en) * 2006-06-29 2009-12-11 Realtek Semiconductor Corp Switching audio power amplifier and method for pop noise suppression
DE102006043746A1 (de) * 2006-09-13 2008-03-27 Micronas Gmbh Schaltungsanordnung zur Unterdrückung von Einschaltgeräuschen
TWI325225B (en) * 2006-12-19 2010-05-21 Qisda Corp Audio signal output circuit capable of decreasing pop noise
US8656415B2 (en) * 2007-10-02 2014-02-18 Conexant Systems, Inc. Method and system for removal of clicks and noise in a redirected audio stream
US20090089813A1 (en) * 2007-10-02 2009-04-02 Conexant Systems, Inc. Method and system for dynamic audio stream redirection
CN101453198B (zh) * 2007-12-07 2015-08-05 瑞昱半导体股份有限公司 交换音频功率放大器的爆音抑制方法
US9014396B2 (en) 2008-01-31 2015-04-21 Qualcomm Incorporated System and method of reducing click and pop noise in audio playback devices
US8063699B2 (en) 2009-06-19 2011-11-22 Conexant Systems, Inc. Anti-pop circuit
US8625818B2 (en) 2009-07-13 2014-01-07 Fairchild Semiconductor Corporation No pop switch
US9054692B2 (en) 2009-07-13 2015-06-09 Fairchild Semiconductor Corporation No pop switch
CN108810735B (zh) 2017-04-28 2020-03-20 华为技术有限公司 一种pop音的抑制方法、音频输出电路和终端
CN109121043B (zh) 2017-06-23 2021-09-03 华为技术有限公司 一种音频处理电路及终端设备
CN109729479B (zh) 2017-10-31 2021-09-21 华为技术有限公司 音频播放电路以及音频播放设备
CN112885306B (zh) * 2019-11-29 2022-04-19 苏州华兴源创科技股份有限公司 一种面板驱动电路及pcb基板
CN111697963B (zh) * 2020-06-15 2023-03-21 电子科技大学 一种适用于纹波消除环路的积分器

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1405445A (en) * 1971-09-25 1975-09-10 Sony Corp Transistor circuits
JPS5435057B2 (de) * 1971-09-27 1979-10-31
JPS5715486B2 (de) * 1974-04-30 1982-03-31
JPS5756244B2 (de) * 1974-09-24 1982-11-29
JPS5394160A (en) * 1977-01-28 1978-08-17 Pioneer Electronic Corp Muutuning circuit
JPS55120203A (en) * 1979-03-09 1980-09-16 Hitachi Ltd Acoustic amplification output circuit
DE2931144A1 (de) * 1979-08-01 1981-02-19 Philips Patentverwaltung Schaltungsanordnung zum beseitigen des ein- und ausschaltknackens bei einem verstaerker
JPS5637711A (en) * 1979-09-05 1981-04-11 Mitsubishi Electric Corp Transient sound preventing circuit
NL8403820A (nl) * 1984-12-17 1986-07-16 Philips Nv Schakeling voor het elimineren van stoorsignalen aan een uitgang van een elektronisch circuit bij het in- en uitschakelen van de voedingsspanning.

Also Published As

Publication number Publication date
JPS63217804A (ja) 1988-09-09
EP0281117A2 (de) 1988-09-07
US4788508A (en) 1988-11-29
EP0281117B1 (de) 1995-09-06
KR900007921B1 (ko) 1990-10-23
EP0281117A3 (en) 1990-12-05
JP2585249B2 (ja) 1997-02-26
KR880011995A (ko) 1988-10-31
DE3854406T2 (de) 1996-02-29

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition