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GB2001220A - Controlling and/or regulating level of useful sound - Google Patents

Controlling and/or regulating level of useful sound

Info

Publication number
GB2001220A
GB2001220A GB7829651A GB7829651A GB2001220A GB 2001220 A GB2001220 A GB 2001220A GB 7829651 A GB7829651 A GB 7829651A GB 7829651 A GB7829651 A GB 7829651A GB 2001220 A GB2001220 A GB 2001220A
Authority
GB
United Kingdom
Prior art keywords
useful sound
level
useful
controlling
measured
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.)
Withdrawn
Application number
GB7829651A
Other languages
English (en)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB2001220A publication Critical patent/GB2001220A/en
Withdrawn legal-status Critical Current

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

Landscapes

  • Control Of Amplification And Gain Control (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
GB7829651A 1977-07-15 1978-07-12 Controlling and/or regulating level of useful sound Withdrawn GB2001220A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2731971A DE2731971B2 (de) 1977-07-15 1977-07-15 Verfahren und Einrichtung zur Steuerung bzw. Regelung einer Nutzschallquelle

Publications (1)

Publication Number Publication Date
GB2001220A true GB2001220A (en) 1979-01-24

Family

ID=6013982

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7829651A Withdrawn GB2001220A (en) 1977-07-15 1978-07-12 Controlling and/or regulating level of useful sound

Country Status (5)

Country Link
JP (1) JPS5430817A (de)
DE (1) DE2731971B2 (de)
FR (1) FR2397750A1 (de)
GB (1) GB2001220A (de)
IT (1) IT1097222B (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4342023A (en) 1979-08-31 1982-07-27 Nissan Motor Company, Limited Noise level controlled voice warning system for an automotive vehicle
WO1985001411A1 (fr) * 1983-09-14 1985-03-28 Keller, René Installation de transmission telephonique
WO1986000133A1 (en) * 1984-06-08 1986-01-03 Plessey Australia Pty. Limited Adaptive speech detector system
EP0179530A1 (de) * 1984-10-22 1986-04-30 Koninklijke Philips Electronics N.V. Geräuschabhängige Lautstärkeregelung mit reduzierter Empfindlichkeit für Sprachsignale
GB2257317A (en) * 1991-06-26 1993-01-06 Damian Rupert Lindley Automatic volume control for car stereo
FR2765610A1 (fr) * 1997-07-04 1999-01-08 Kiekert Ag Vehicule automobile avec un systeme de fermeture a ouvrir ou a verrouiller au moyen d'une telecommande
WO2020092989A1 (en) * 2018-11-02 2020-05-07 Bose Corporation Volume control in open audio device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55147015A (en) * 1979-05-07 1980-11-15 Hitachi Ltd Audio unit mounting on car
DE2931604C2 (de) * 1979-08-03 1982-04-29 Siemens AG, 1000 Berlin und 8000 München Störgeräuschkompensierte Mikrofonschaltung
US4582414A (en) * 1984-05-01 1986-04-15 Eastman Kodak Company Magnetic brush development apparatus
JPH04113399A (ja) * 1990-09-03 1992-04-14 Nec Ic Microcomput Syst Ltd 音声増幅装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH244200A (de) * 1945-08-23 1946-08-31 Siemens Ag Albis Elektroakustische Übertragungsanlage für lärmgestörte Wiedergabeorte.
US2501327A (en) * 1946-12-06 1950-03-21 Rca Corp Noise operated automatic volume control
GB667694A (en) * 1949-07-28 1952-03-05 Gen Electric Co Ltd Improvements in or relating to electrical sound reproducing apparatus
US3410958A (en) * 1965-03-25 1968-11-12 Executone Inf Sys Inc Noise controlled sound reproducing system
JPS4984313A (de) * 1972-12-18 1974-08-13
JPS5093761A (de) * 1973-12-20 1975-07-26
FR2394420A1 (fr) * 1975-10-28 1979-01-12 Orlik Henri Perfectionnements aux recepteurs radiophoniques " auto-radio "
JPS5267545A (en) * 1975-12-03 1977-06-04 Nippon Telegr & Teleph Corp <Ntt> Automatic volume adjusting circuit

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4342023A (en) 1979-08-31 1982-07-27 Nissan Motor Company, Limited Noise level controlled voice warning system for an automotive vehicle
WO1985001411A1 (fr) * 1983-09-14 1985-03-28 Keller, René Installation de transmission telephonique
WO1986000133A1 (en) * 1984-06-08 1986-01-03 Plessey Australia Pty. Limited Adaptive speech detector system
EP0179530A1 (de) * 1984-10-22 1986-04-30 Koninklijke Philips Electronics N.V. Geräuschabhängige Lautstärkeregelung mit reduzierter Empfindlichkeit für Sprachsignale
GB2257317A (en) * 1991-06-26 1993-01-06 Damian Rupert Lindley Automatic volume control for car stereo
FR2765610A1 (fr) * 1997-07-04 1999-01-08 Kiekert Ag Vehicule automobile avec un systeme de fermeture a ouvrir ou a verrouiller au moyen d'une telecommande
WO2020092989A1 (en) * 2018-11-02 2020-05-07 Bose Corporation Volume control in open audio device
CN113170250A (zh) * 2018-11-02 2021-07-23 伯斯有限公司 开放式音频设备中的音量控制
US11295718B2 (en) 2018-11-02 2022-04-05 Bose Corporation Ambient volume control in open audio device
US11955107B2 (en) 2018-11-02 2024-04-09 Bose Corporation Ambient volume control in open audio device
CN113170250B (zh) * 2018-11-02 2025-02-25 伯斯有限公司 开放式音频设备中的音量控制
EP4531431A3 (de) * 2018-11-02 2025-06-18 Bose Corporation Lautstärkeregelung in einem offenen audiogerät

Also Published As

Publication number Publication date
DE2731971B2 (de) 1980-05-14
JPS5430817A (en) 1979-03-07
IT7825641A0 (it) 1978-07-13
FR2397750A1 (fr) 1979-02-09
IT1097222B (it) 1985-08-26
DE2731971A1 (de) 1979-01-18

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)