ZA80728B - A circuit arrangements for broadcast receivers - Google Patents

A circuit arrangements for broadcast receivers

Info

Publication number
ZA80728B
ZA80728B ZA00800728A ZA80728A ZA80728B ZA 80728 B ZA80728 B ZA 80728B ZA 00800728 A ZA00800728 A ZA 00800728A ZA 80728 A ZA80728 A ZA 80728A ZA 80728 B ZA80728 B ZA 80728B
Authority
ZA
South Africa
Prior art keywords
circuit arrangements
broadcast receivers
receivers
broadcast
arrangements
Prior art date
Application number
ZA00800728A
Other languages
English (en)
Inventor
K Wiedemann
Original Assignee
Blaupunkt Werke Gmbh
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
Priority claimed from DE2904920A external-priority patent/DE2904920C2/de
Application filed by Blaupunkt Werke Gmbh filed Critical Blaupunkt Werke Gmbh
Publication of ZA80728B publication Critical patent/ZA80728B/xx

Links

Classifications

    • 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
    • H03G3/32—Automatic control in amplifiers having semiconductor devices the control being dependent upon ambient noise level or sound level
ZA00800728A 1979-02-09 1980-02-07 A circuit arrangements for broadcast receivers ZA80728B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2904920A DE2904920C2 (de) 1979-02-09 1979-02-09 Schaltungsanordnung zum selbsttätigen Anpassen der Lautstärke mindestens eines Lautsprechers an einen am Lautsprecherort herrschenden Störgeräuschpegel für Rundfunkempfänger, insbesondere Autoradios

Publications (1)

Publication Number Publication Date
ZA80728B true ZA80728B (en) 1981-02-25

Family

ID=6062548

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00800728A ZA80728B (en) 1979-02-09 1980-02-07 A circuit arrangements for broadcast receivers

Country Status (7)

Country Link
US (1) US4247955A (cg-RX-API-DMAC7.html)
AT (1) AT379035B (cg-RX-API-DMAC7.html)
CH (1) CH644974A5 (cg-RX-API-DMAC7.html)
FR (1) FR2448812A1 (cg-RX-API-DMAC7.html)
GB (1) GB2042836B (cg-RX-API-DMAC7.html)
SE (1) SE451044B (cg-RX-API-DMAC7.html)
ZA (1) ZA80728B (cg-RX-API-DMAC7.html)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56147525A (en) 1980-04-18 1981-11-16 Hitachi Ltd Reception playback system
US4476571A (en) * 1981-06-15 1984-10-09 Pioneer Electronic Corporation Automatic sound volume control device
DE3315150C3 (de) * 1982-04-28 1996-04-25 Pioneer Electronic Corp Selbsttätige Lautstärke-Steuervorrichtung
US4603317A (en) * 1982-11-08 1986-07-29 Electronic Controls Co. Electrically-operated backup alarm
US4479239A (en) * 1983-03-28 1984-10-23 Silver Creek Nurseries, Inc. Sound detecting device
JPS61131189U (cg-RX-API-DMAC7.html) * 1985-02-01 1986-08-16
DE3690169C2 (cg-RX-API-DMAC7.html) * 1985-04-10 1990-10-04 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka, Jp
US4809338A (en) * 1985-07-05 1989-02-28 Harman International Industries, Incorporated Automotive sound system
US4759065A (en) * 1986-09-22 1988-07-19 Harman International Industries, Incorporated Automotive sound system
US5471527A (en) 1993-12-02 1995-11-28 Dsc Communications Corporation Voice enhancement system and method
DE4430931A1 (de) * 1994-08-31 1996-03-07 Blaupunkt Werke Gmbh Einrichtung zur fahrgeräuschabhängigen Steuerung der Lautstärke eines Autoradios
US5872852A (en) * 1995-09-21 1999-02-16 Dougherty; A. Michael Noise estimating system for use with audio reproduction equipment
US5907622A (en) * 1995-09-21 1999-05-25 Dougherty; A. Michael Automatic noise compensation system for audio reproduction equipment
DE19734969B4 (de) * 1996-09-28 2006-08-24 Volkswagen Ag Verfahren und Vorrichtung zur Wiedergabe von Audiosignalen
DE10018666A1 (de) 2000-04-14 2001-10-18 Harman Audio Electronic Sys Vorrichtung und Verfahren zum geräuschabhängigen Anpassen eines akustischen Nutzsignals
US20040125962A1 (en) * 2000-04-14 2004-07-01 Markus Christoph Method and apparatus for dynamic sound optimization
JP2002047693A (ja) * 2000-08-02 2002-02-15 Yanmar Diesel Engine Co Ltd 建設機械の走行警報装置
DE602004004242T2 (de) * 2004-03-19 2008-06-05 Harman Becker Automotive Systems Gmbh System und Verfahren zur Verbesserung eines Audiosignals
JP4304118B2 (ja) * 2004-04-22 2009-07-29 株式会社オーディオテクニカ マイクロホンの出力コネクタ
EP1833163B1 (en) * 2004-07-20 2019-12-18 Harman Becker Automotive Systems GmbH Audio enhancement system and method
US8170221B2 (en) * 2005-03-21 2012-05-01 Harman Becker Automotive Systems Gmbh Audio enhancement system and method
DE602005015426D1 (de) 2005-05-04 2009-08-27 Harman Becker Automotive Sys System und Verfahren zur Intensivierung von Audiosignalen
US7567165B2 (en) * 2006-10-27 2009-07-28 At&T Intellectual Property, I, L.P. Methods, devices, and computer program products for providing ambient noise sensitive alerting
US8138946B2 (en) * 2008-03-27 2012-03-20 Villalobos Eduardo System and method for notification of presence of emergency vehicles
US8977974B2 (en) * 2008-12-08 2015-03-10 Apple Inc. Ambient noise based augmentation of media playback
US9118987B2 (en) * 2013-03-12 2015-08-25 Bose Corporation Motor vehicle active noise reduction
US9923534B2 (en) 2014-07-31 2018-03-20 E.F. Johnson Company Automatic volume control for land mobile radio

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2503391A (en) * 1949-01-06 1950-04-11 Bell Telephone Labor Inc Automatic volume control
US2564437A (en) * 1949-11-26 1951-08-14 Bell Telephone Labor Inc Automatic volume control
US2668874A (en) * 1950-01-10 1954-02-09 Bell Telephone Labor Inc Automatic volume control
US3410958A (en) * 1965-03-25 1968-11-12 Executone Inf Sys Inc Noise controlled sound reproducing system
US3497622A (en) * 1966-10-21 1970-02-24 Zenith Radio Corp Automatic gain control
US3805177A (en) * 1972-11-24 1974-04-16 Gte Sylvania Inc Amplifier circuit having variable automatic gain control
AT377134B (de) * 1977-01-27 1985-02-11 Peter Boettcher Schaltungsanordnung zur anpassung der lautstaerke eines autoempfaengers in abhaengigkeit vom fahrgeraeusch

Also Published As

Publication number Publication date
CH644974A5 (de) 1984-08-31
SE8000992L (sv) 1980-08-10
SE451044B (sv) 1987-08-24
US4247955A (en) 1981-01-27
GB2042836B (en) 1983-03-09
GB2042836A (en) 1980-09-24
ATA65380A (de) 1985-03-15
FR2448812A1 (fr) 1980-09-05
FR2448812B3 (cg-RX-API-DMAC7.html) 1981-11-27
AT379035B (de) 1985-11-11

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