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  2. Media control symbols - Wikipedia

    en.wikipedia.org/wiki/Media_control_symbols

    To identify the control or the indicator to play the next part and then stop. Record: U+23FA ⏺ #5547 Recording, general: To identify a control to preset or start a recording mode. Eject U+23CF ⏏ #5459 Eject: To identify the control for the eject function. Shuffle U+1F500 🔀 — To randomly play a song from a given list.

  3. Squelch - Wikipedia

    en.wikipedia.org/wiki/Squelch

    The squelch control adjusts the gain of an amplifier which varies the level of the noise coming out of the filter. This noise is rectified , producing a DC voltage when noise is present. The presence of continuous noise on an idle channel creates a DC voltage which turns the receiver audio off.

  4. Volume control - Wikipedia

    en.wikipedia.org/wiki/Volume_control

    Volume control can refer to: Volume controlled continuous mandatory ventilation ... a feature on audio equipment for adjusting the sound level Remote control ...

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  6. Closed captioning - Wikipedia

    en.wikipedia.org/wiki/Closed_captioning

    Viewer-adjustable text size (called the "caption volume control" in the specification), allowing individuals to adjust their TVs to display small, normal, or large captions More text and background colors, including both transparent and translucent backgrounds to optionally replace the big black block

  7. Mute (music) - Wikipedia

    en.wikipedia.org/wiki/Mute_(music)

    The solotone mute consists of two telescoping cones and a small tube in the center, all made of cardboard. [47] It is structurally similar to a harmon mute, but has a cardboard tube in the middle. It has a more intense sound than the harmon mute and has a characteristic "megaphone-like" quality. [29]

  8. Palm mute - Wikipedia

    en.wikipedia.org/wiki/Palm_mute

    A demonstration of a guitarist palm muting Guitar phrase without and with palm mute. The palm mute is a technique for guitar and bass guitar known for its muted sound. It is performed by placing the side of the picking hand across the guitar's strings, close to the bridge, while picking.

  9. Headphones - Wikipedia

    en.wikipedia.org/wiki/Headphones

    The usual way of limiting sound volume on devices driving headphones is by limiting output power. This has the additional undesirable effect of being dependent of the efficiency of the headphones; a device producing the maximum allowed power may not produce adequate volume when paired with low-efficiency, high-impedance equipment, while the ...