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  2. Electronic tuner - Wikipedia

    en.wikipedia.org/wiki/Electronic_tuner

    Pocket-sized Korg chromatic LCD tuner, with simulated analog indicator needle Guitar tuner showing that the "E" string is too sharp and needs to be tuned down. In music, an electronic tuner is a device that detects and displays the pitch of musical notes played on a musical instrument.

  3. Tuner (radio) - Wikipedia

    en.wikipedia.org/wiki/Tuner_(radio)

    Marantz 2050L AM/FM stereo tuner (USA; 1978-1980) [1]. In electronics and radio, a tuner is a type of receiver subsystem that receives RF transmissions, such as AM or FM broadcasts, and converts the selected carrier frequency into a form suitable for further processing or output, such as to an amplifier or loudspeaker.

  4. Musical tuning - Wikipedia

    en.wikipedia.org/wiki/Musical_tuning

    Man turning tuning pegs to tune guitar Tuning of Sébastien Érard harp using Korg OT-120 Wide 8 Octave Orchestral Digital Tuner. Tuning is the process of adjusting the pitch of one or many tones from musical instruments to establish typical intervals between these tones. Tuning is usually based on a fixed reference, such as A = 440 Hz.

  5. Magic eye tube - Wikipedia

    en.wikipedia.org/wiki/Magic_eye_tube

    EM34 tuning eye EM84 tuning indicator. A magic eye tube or tuning indicator, in technical literature called an electron-ray indicator tube, [1] is a vacuum tube which gives a visual indication of the amplitude of an electronic signal, such as an audio output, radio-frequency signal strength, or other functions. [1]

  6. Tuner - Wikipedia

    en.wikipedia.org/wiki/Tuner

    Electronic tuner, a device used by musicians and technicians to measure the pitch of a musical instrument to adjust or correct the input signal to the desired pitch; Tuning mechanisms for stringed instruments, such as tuning pegs, tuning pins, tuning levers, & konso

  7. Frequency synthesizer - Wikipedia

    en.wikipedia.org/wiki/Frequency_synthesizer

    A frequency synthesizer is an electronic circuit that generates a range of frequencies from a single reference frequency. Frequency synthesizers are used in devices such as radio receivers, televisions, mobile telephones, radiotelephones, walkie-talkies, CB radios, cable television converter boxes, satellite receivers, and GPS systems.

  8. Automatic frequency control - Wikipedia

    en.wikipedia.org/wiki/Automatic_frequency_control

    AFC was mainly used in radios and television sets around the mid-20th century. In the 1970s, receivers began to be designed using frequency synthesizer circuits, which synthesized the receiver's input frequency from a crystal oscillator using the vibrations of an ultra-stable quartz crystal.

  9. TV tuner card - Wikipedia

    en.wikipedia.org/wiki/TV_tuner_card

    A TV tuner card is a kind of television tuner that allows television signals to be received by a computer. Most TV tuners also function as video capture cards, allowing them to record television programs onto a hard disk much like the digital video recorder (DVR) does.

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