DE2225575A1 - AUTOMATIC VOLUME CONTROL FOR CAR RADIOS AND CAR CASSETTE RECORDER DEPENDING ON THE NOISE LEVEL IN THE PASSENGER COMPARTMENT - Google Patents

AUTOMATIC VOLUME CONTROL FOR CAR RADIOS AND CAR CASSETTE RECORDER DEPENDING ON THE NOISE LEVEL IN THE PASSENGER COMPARTMENT

Info

Publication number
DE2225575A1
DE2225575A1 DE19722225575 DE2225575A DE2225575A1 DE 2225575 A1 DE2225575 A1 DE 2225575A1 DE 19722225575 DE19722225575 DE 19722225575 DE 2225575 A DE2225575 A DE 2225575A DE 2225575 A1 DE2225575 A1 DE 2225575A1
Authority
DE
Germany
Prior art keywords
car
cassette recorder
passenger compartment
volume control
noise level
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.)
Pending
Application number
DE19722225575
Other languages
German (de)
Inventor
Fred Johannsen
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
Priority to DE19722225575 priority Critical patent/DE2225575A1/en
Publication of DE2225575A1 publication Critical patent/DE2225575A1/en
Pending 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

  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

Description

Beschreibung 1,Automatische Lautstärkeregelung für Autoradios und Autokassettenrecorder in Abhängigkeit vom Geräuschpegel im Bahrgastraum" Beim Betrieb eines Autoradios während der Fahrt muß der Fahrer häufig die Lautstärke regeln, da der Geräuschpegel, verursacht durch Motor-, Getriebe- und Radge-räusche sowie Fahrtwind, stark schwankt. Beispiel: Vor der Ampel ist das Radio zu laut, auf der Landstraße wiederum zu leise.Description 1, Automatic volume control for car radios and Car cassette recorder depending on the noise level in the passenger compartment "During operation of a car radio while driving, the driver often has to regulate the volume, because of the noise level caused by engine, transmission and wheel noises as well Head wind, fluctuates strongly. Example: The radio is too loud in front of the traffic lights Country road again too quiet.

Die nachstehend aufgeführten Bauteile sollen durch ihre Funktionen den Fahrer von der Handregelung entlasten, die ihm insbesondere während der Fahrt lästig ist, und sogar gefährlich sein kann, da sie vom Straßenverkehr ablenkt.The components listed below are intended to be characterized by their functions Relieve the driver of the manual control, which is particularly important to him while driving is annoying and can even be dangerous as it distracts you from the traffic.

Benötigt werden: ein Mikrophon, eine Frequenzweiche ein abschaltbarer Regelkreis Dås Mikrophon ist in die Frontplatte des Gerätes eingebaut oder an anderer geeigneter Stelle im Fahrgastraum montiert.You will need: a microphone, a crossover network that can be switched off The control circuit of the microphone is built into the front panel of the device or another mounted in a suitable place in the passenger compartment.

Es nimmt den luft- bzw. Körperschall des Fahrzeugs auf und gibt das Signal über die Frequenzweiche an den Regelkreis ab.It picks up the airborne or structure-borne noise of the vehicle and emits it Signal via the crossover to the control loop.

Die wrequenzweiche hat die Aufgabe, äene Frequenzen zu eleminieren, die zu rückkopplungsähnlichen Brscheinungen mit dem Lautsprecher führen können. Das Restsignal wird dem Regelkreis zugeführt Der Regelkreis verändert entsprechend dem Geräuschsignal elektronisch beruhigt und zeitlich verzögert die Lautstärke des Radios bzw. Kassettenrecorders.The task of the frequency separator is to eliminate frequencies, which can lead to feedback-like inconsistencies with the loudspeaker. The residual signal is fed to the control loop. The control loop changes accordingly the sound signal electronically calms and delays the volume of the Radios or cassette recorders.

Da der Regelkreis abschaltbar ist, bleibt die Möglichkeit der Regelung von Hand erhalten. Beim Betrieb der automatischen Regelung dient die Handregelung zur Einstellung der Grundlautstärke.Since the control loop can be switched off, there is still the possibility of regulation received by hand. Manual control is used when operating the automatic control for setting the basic volume.

Anwendungsgebiete: Autoradios, Autokoffergeräte und Autokassettenrecorder.Areas of application: car radios, car case devices and car cassette recorders.

Claims (2)

PatentansprücheClaims S Automatische zu1. Automatische Lautstärkeregelung für Autoradios und Autokassettenrecorder in Abhängigkeit vom Geräuschpegel im Fahrgastraum, d a d u r c h g e k e n n z e i c h n e t , daß nach Betätigung eines Umschalters ein Mikrophon, Fiezoelement oder ähnliches Bauteil, das im Fahrgastraum montiert ist, Störgeräusch bzw. Vibration des Fahrzeugs in ein elektrisches Signal umwandelt und dieses elektrische Signal über eine Brequenzweiche, die solche Frequenzen sperrt, die vom Lautsprecher des Autoradios bzw. Autokassettenrecorders abgestrahlt werden, an einen Regelkreis weitergibt, der die Lautstärke des Autoradios bzw. Autokassettenrecorders entsprechend der Stärke des zugeleiteten elektrischen Signals regelt.S Automatic to1. Automatic volume control for car radios and car cassette recorder as a function of the noise level in the passenger compartment, d a D u r c h e k e n n n n n e i c h n e t that after actuation of a toggle switch a Microphone, Fiezo element or similar component that is mounted in the passenger compartment, Converts background noise or vibration of the vehicle into an electrical signal and this electrical signal via a crossover that blocks such frequencies, which are emitted by the loudspeaker of the car radio or car cassette recorder, forwards to a control loop that controls the volume of the car radio or car cassette recorder regulates according to the strength of the supplied electrical signal. 2. Automatische Lautstärkeregelung nach Anspruch 1, dadurch gekennzeichnet, daß durch einen Umschalter der Betrieb des Autoradios bzw. Autokassettenrecorders mittels II andregelung weiterhin möglich ist, und bei Inbetriebnahme der automatischen Regelung der zur tiandregelung benutzte variable Widerstandt mittels des gleichen Umschalters so geschaltet wird, daß er zur Einstellung der Grundlautstärke dient.2. Automatic volume control according to claim 1, characterized in that that by a switch the operation of the car radio or car cassette recorder by means of II and control is still possible, and when the automatic Regulation of the variable resistance used for tiand regulation by means of the same Switch is switched so that it is used to set the basic volume.
DE19722225575 1972-05-26 1972-05-26 AUTOMATIC VOLUME CONTROL FOR CAR RADIOS AND CAR CASSETTE RECORDER DEPENDING ON THE NOISE LEVEL IN THE PASSENGER COMPARTMENT Pending DE2225575A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19722225575 DE2225575A1 (en) 1972-05-26 1972-05-26 AUTOMATIC VOLUME CONTROL FOR CAR RADIOS AND CAR CASSETTE RECORDER DEPENDING ON THE NOISE LEVEL IN THE PASSENGER COMPARTMENT

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722225575 DE2225575A1 (en) 1972-05-26 1972-05-26 AUTOMATIC VOLUME CONTROL FOR CAR RADIOS AND CAR CASSETTE RECORDER DEPENDING ON THE NOISE LEVEL IN THE PASSENGER COMPARTMENT

Publications (1)

Publication Number Publication Date
DE2225575A1 true DE2225575A1 (en) 1973-12-06

Family

ID=5845906

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19722225575 Pending DE2225575A1 (en) 1972-05-26 1972-05-26 AUTOMATIC VOLUME CONTROL FOR CAR RADIOS AND CAR CASSETTE RECORDER DEPENDING ON THE NOISE LEVEL IN THE PASSENGER COMPARTMENT

Country Status (1)

Country Link
DE (1) DE2225575A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1530400A1 (en) * 2003-11-07 2005-05-11 Harman International Industries, Incorporated Automotive audio controller with vibration sensor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1530400A1 (en) * 2003-11-07 2005-05-11 Harman International Industries, Incorporated Automotive audio controller with vibration sensor
US7606376B2 (en) 2003-11-07 2009-10-20 Harman International Industries, Incorporated Automotive audio controller with vibration sensor

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