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  2. List of car audio manufacturers and brands - Wikipedia

    en.wikipedia.org/wiki/List_of_car_audio...

    This list of car audio manufacturers and brands comprises brand labels and manufacturers of both original equipment manufacturer (OEM) and after-market products generally related to in-car entertainment that already have articles within Wikipedia. While components sold by these companies have much in common with other audio applications or may ...

  3. Automotive head unit - Wikipedia

    en.wikipedia.org/wiki/Automotive_head_unit

    Doubling the height of the single DIN, a video display or touchscreen can be fitted to support manufacturer GUIs, Android Auto, Huawei HiCar and/or Apple CarPlay. [3] Double DIN is also written as 2 DIN and double din. For both single and double DIN units, ISO 10487 is the connectors standard for connecting the head unit to the car's electrical ...

  4. Vehicle audio - Wikipedia

    en.wikipedia.org/wiki/Vehicle_audio

    Some head units have built-in stereo amplifiers. Other car audio systems use a separate stand-alone amplifier. Every amplifier has a rated power level sometimes noted on the head unit with the built-in amplifier, or on the label of a stand-alone unit. Coaxial speakers: These are the most common type of car speakers and are often factory-installed.

  5. Component video - Wikipedia

    en.wikipedia.org/wiki/Component_video

    A 15-pin VGA connector for a personal computer A 21-pin SCART or JP21 connector for a television. The various RGB (red, green, blue) analog component video standards (e.g., RGBS, RGBHV, RGsB) use no compression and impose no real limit on color depth or resolution, but require large bandwidth to carry the signal and contain a lot of redundant data since each channel typically includes much of ...

  6. VU meter - Wikipedia

    en.wikipedia.org/wiki/VU_meter

    An analog VU meter with peak LED. A volume unit (VU) meter or standard volume indicator (SVI) is a device displaying a representation of the signal level in audio equipment.. The original design was proposed in the 1940 IRE paper, A New Standard Volume Indicator and Reference Level, written by experts from CBS, NBC, and Bell Telephone Laboratories. [1]

  7. Stereophonic sound - Wikipedia

    en.wikipedia.org/wiki/Stereophonic_sound

    Mid/side stereo microphone technique. This coincident technique employs a bidirectional microphone facing sideways and another microphone at an angle of 90°, facing the sound source. The second microphone is generally a variety of cardioid, although Alan Blumlein described the usage of an omnidirectional transducer in his original patent.

  8. Multimeter - Wikipedia

    en.wikipedia.org/wiki/Multimeter

    Analog multimeter Digital multimeter. A multimeter (also known as a volt-ohm-milliammeter, volt-ohmmeter or VOM) [1] is a measuring instrument that can measure multiple electrical properties. [2] [3] A typical multimeter can measure voltage, resistance, and current, [4] in which case can be used as a voltmeter, ohmmeter, and ammeter.

  9. Automatic gain control - Wikipedia

    en.wikipedia.org/wiki/Automatic_gain_control

    Schematic of an AGC used in the analog telephone network; the feedback from output level to gain is effected via a Vactrol resistive opto-isolator.. Automatic gain control (AGC) is a closed-loop feedback regulating circuit in an amplifier or chain of amplifiers, the purpose of which is to maintain a suitable signal amplitude at its output, despite variation of the signal amplitude at the input.

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