ZA806381B - A circuit arrangement for automatically adjusting the volume of a loudspeaker relevant to an ambient extraneous noise level - Google Patents

A circuit arrangement for automatically adjusting the volume of a loudspeaker relevant to an ambient extraneous noise level

Info

Publication number
ZA806381B
ZA806381B ZA00806381A ZA806381A ZA806381B ZA 806381 B ZA806381 B ZA 806381B ZA 00806381 A ZA00806381 A ZA 00806381A ZA 806381 A ZA806381 A ZA 806381A ZA 806381 B ZA806381 B ZA 806381B
Authority
ZA
South Africa
Prior art keywords
volume
circuit arrangement
noise level
automatically adjusting
extraneous noise
Prior art date
Application number
ZA00806381A
Inventor
W Voessing
H Wellhausen
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
Application filed by Blaupunkt Werke Gmbh filed Critical Blaupunkt Werke Gmbh
Publication of ZA806381B publication Critical patent/ZA806381B/en

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
ZA00806381A 1979-10-19 1980-10-16 A circuit arrangement for automatically adjusting the volume of a loudspeaker relevant to an ambient extraneous noise level ZA806381B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792942331 DE2942331A1 (en) 1979-10-19 1979-10-19 CIRCUIT ARRANGEMENT FOR AUTOMATICALLY ADJUSTING THE VOLUME OF A LOUDSPEAKER DEPENDING ON A NOISE LEVEL RULING AT THE SPEAKER LOCATION

Publications (1)

Publication Number Publication Date
ZA806381B true ZA806381B (en) 1981-10-28

Family

ID=6083895

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00806381A ZA806381B (en) 1979-10-19 1980-10-16 A circuit arrangement for automatically adjusting the volume of a loudspeaker relevant to an ambient extraneous noise level

Country Status (4)

Country Link
EP (1) EP0027519A1 (en)
JP (1) JPS5666917A (en)
DE (1) DE2942331A1 (en)
ZA (1) ZA806381B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3110655A1 (en) * 1981-03-19 1983-01-05 Norbert 5419 Brückrachdorf Pickel Autopilot for motor vehicles for finding streets easily in large cities
DE3315150C3 (en) * 1982-04-28 1996-04-25 Pioneer Electronic Corp Automatic volume control device
DE3320751A1 (en) * 1983-06-09 1984-12-13 Blaupunkt-Werke Gmbh, 3200 Hildesheim Circuit arrangement for automatically adapting the volume of a loudspeaker to an interfering noise level prevailing at the loudspeaker location
DE3322055A1 (en) * 1983-06-18 1984-12-20 Blaupunkt-Werke Gmbh, 3200 Hildesheim Circuit arrangement for automatically adapting the volume of a loudspeaker to an interfering noise level prevailing at the loudspeaker location
DE3338413A1 (en) * 1983-10-22 1985-05-02 Blaupunkt-Werke Gmbh, 3200 Hildesheim Circuit arrangement for the automatic adaptation of the volume of a loudspeaker to a disturbing noise level prevailing at the loudspeaker location
GB8725240D0 (en) * 1987-10-28 1987-12-02 Thomas I G Differential volume adjusters
DE3830423A1 (en) * 1987-11-25 1989-06-08 Pioneer Electronic Corp MOBILE DEVICE WITH AUTOMATIC VOLUME CONTROL
JP3034876B2 (en) * 1988-11-08 2000-04-17 パイオニア株式会社 Automatic volume control device for in-vehicle audio system
JPH034611A (en) * 1989-06-01 1991-01-10 Pioneer Electron Corp On-vehicle automatic sound volume adjustment device
GB2248001A (en) * 1990-09-11 1992-03-18 Concourse Communications Ltd Controlling sound volume in dependence on ambient noise
GB2257317A (en) * 1991-06-26 1993-01-06 Damian Rupert Lindley Automatic volume control for car stereo
FI95754C (en) * 1992-10-21 1996-03-11 Nokia Deutschland Gmbh sound system
CN115884040A (en) * 2022-09-08 2023-03-31 中山市悦辰电子实业有限公司 Self-adaptive environment automatic sleep adjustment sound system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB485005A (en) * 1935-11-12 1938-05-12 Heinz Boucke Improvements in and relating to sound reproducing systems
DE1762823A1 (en) * 1968-09-03 1970-10-22 Ruppelt Dipl Phys Walter Automatic volume control of electro-acoustic sound systems
JPS5135142Y2 (en) * 1971-05-26 1976-08-30
DE2435956A1 (en) * 1974-07-26 1976-02-05 Nippold Electroacoustical system volume control - uses total surrounding and loudspeaker noise and sound signal which are connected in opposition
DE2717069A1 (en) * 1977-04-18 1978-10-26 Ulrich Dr Ostertag Electro-acoustic circuit control unit - has VCO amplifier regulated by signal to noise ratio in room

Also Published As

Publication number Publication date
DE2942331A1 (en) 1981-05-07
EP0027519A1 (en) 1981-04-29
JPS5666917A (en) 1981-06-05
JPS6359564B2 (en) 1988-11-21

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