AT379035B - Schaltungsanordnung zum selbsttaetigen anpassen der lautstaerke mindestens eines lautsprechers an einen am lautsprecherort herrschenden stoergeraeuschpegel fuer rundfunkempfaenger, insbesondere autoradios - Google Patents
Schaltungsanordnung zum selbsttaetigen anpassen der lautstaerke mindestens eines lautsprechers an einen am lautsprecherort herrschenden stoergeraeuschpegel fuer rundfunkempfaenger, insbesondere autoradiosInfo
- Publication number
- AT379035B AT379035B AT0065380A AT65380A AT379035B AT 379035 B AT379035 B AT 379035B AT 0065380 A AT0065380 A AT 0065380A AT 65380 A AT65380 A AT 65380A AT 379035 B AT379035 B AT 379035B
- Authority
- AT
- Austria
- Prior art keywords
- speaker
- radio
- volume
- circuit arrangement
- noise level
- Prior art date
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
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 (2)
Publication Number | Publication Date |
---|---|
ATA65380A ATA65380A (de) | 1985-03-15 |
AT379035B true AT379035B (de) | 1985-11-11 |
Family
ID=6062548
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT0065380A AT379035B (de) | 1979-02-09 | 1980-02-06 | Schaltungsanordnung zum selbsttaetigen anpassen der lautstaerke mindestens eines lautsprechers an einen am lautsprecherort herrschenden stoergeraeuschpegel fuer rundfunkempfaenger, insbesondere autoradios |
Country Status (7)
Country | Link |
---|---|
US (1) | US4247955A (de) |
AT (1) | AT379035B (de) |
CH (1) | CH644974A5 (de) |
FR (1) | FR2448812A1 (de) |
GB (1) | GB2042836B (de) |
SE (1) | SE451044B (de) |
ZA (1) | ZA80728B (de) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 (de) * | 1985-02-01 | 1986-08-16 | ||
WO1986006189A1 (en) * | 1985-04-10 | 1986-10-23 | Matsushita Electric Industrial Co., Ltd. | Control circuit |
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 |
US20040125962A1 (en) * | 2000-04-14 | 2004-07-01 | Markus Christoph | Method and apparatus for dynamic sound optimization |
DE10018666A1 (de) | 2000-04-14 | 2001-10-18 | Harman Audio Electronic Sys | Vorrichtung und Verfahren zum geräuschabhängigen Anpassen eines akustischen Nutzsignals |
JP2002047693A (ja) * | 2000-08-02 | 2002-02-15 | Yanmar Diesel Engine Co Ltd | 建設機械の走行警報装置 |
EP1580882B1 (de) * | 2004-03-19 | 2007-01-10 | 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 (de) * | 2004-07-20 | 2019-12-18 | Harman Becker Automotive Systems GmbH | Audioverbesserungssystem und -verfahren |
US8170221B2 (en) * | 2005-03-21 | 2012-05-01 | Harman Becker Automotive Systems Gmbh | Audio enhancement system and method |
EP1720249B1 (de) | 2005-05-04 | 2009-07-15 | Harman Becker Automotive Systems GmbH | 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)
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 |
-
1979
- 1979-12-19 CH CH1128579A patent/CH644974A5/de not_active IP Right Cessation
-
1980
- 1980-01-23 US US06/114,551 patent/US4247955A/en not_active Expired - Lifetime
- 1980-02-05 GB GB8003805A patent/GB2042836B/en not_active Expired
- 1980-02-06 AT AT0065380A patent/AT379035B/de not_active IP Right Cessation
- 1980-02-07 SE SE8000992A patent/SE451044B/sv not_active IP Right Cessation
- 1980-02-07 ZA ZA00800728A patent/ZA80728B/xx unknown
- 1980-02-08 FR FR8002857A patent/FR2448812A1/fr active Granted
Also Published As
Publication number | Publication date |
---|---|
SE8000992L (sv) | 1980-08-10 |
CH644974A5 (de) | 1984-08-31 |
US4247955A (en) | 1981-01-27 |
ATA65380A (de) | 1985-03-15 |
GB2042836A (en) | 1980-09-24 |
ZA80728B (en) | 1981-02-25 |
FR2448812A1 (fr) | 1980-09-05 |
FR2448812B3 (de) | 1981-11-27 |
GB2042836B (en) | 1983-03-09 |
SE451044B (sv) | 1987-08-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ELJ | Ceased due to non-payment of the annual fee | ||
UEP | Publication of translation of european patent specification | ||
REN | Ceased due to non-payment of the annual fee | ||
RER | Ceased as to paragraph 5 lit. 3 law introducing patent treaties |