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  2. 7.1 surround sound - Wikipedia

    en.wikipedia.org/wiki/7.1_surround_sound

    7.1 surround sound is the common name for an eight-channel surround audio system commonly used in home theatre configurations. It adds two additional speakers to the more conventional six-channel ( 5.1) audio configuration. As with 5.1 surround sound, 7.1 surround sound positional audio uses the standard front left and right, center, and LFE ...

  3. Speaker wire - Wikipedia

    en.wikipedia.org/wiki/Speaker_wire

    Speaker wire is a passive electrical component described by its electrical impedance, Z. The impedance can be broken up into three properties which determine its performance: the real part of the impedance, or the resistance, and the imaginary component of the impedance: capacitance or inductance. The ideal speaker wire has no resistance ...

  4. Faraday cage - Wikipedia

    en.wikipedia.org/wiki/Faraday_cage

    Faraday cage. A Faraday cage or Faraday shield is an enclosure used to block some electromagnetic fields. A Faraday shield may be formed by a continuous covering of conductive material, or in the case of a Faraday cage, by a mesh of such materials. Faraday cages are named after scientist Michael Faraday, who first constructed one in 1836.

  5. Noise-cancelling headphones - Wikipedia

    en.wikipedia.org/wiki/Noise-cancelling_headphones

    Noise -cancelling headphones alongside a carry case. Noise-cancelling headphones are headphones which suppress unwanted ambient sounds using active noise control. This is distinct from passive headphones which, if they reduce ambient sounds at all, use techniques such as soundproofing . Noise cancellation makes it possible to listen to audio ...

  6. Ray-Ban - Wikipedia

    en.wikipedia.org/wiki/Ray-Ban

    Ray-Ban is a brand of luxury sunglasses and eyeglasses created in 1936 by Bausch & Lomb. The brand is best known for its Wayfarer and Aviator lines of sunglasses. In 1999, Bausch & Lomb sold the brand to Italian eyewear conglomerate Luxottica Group for a reported $640 million.

  7. Can You Spot All 5 Differences in This Watermelon Brainteaser?

    www.aol.com/spot-5-differences-watermelon...

    With that said, the specific things that have differences across both photos are: two bunnies, one bird, one watermelon, and one leaf. They're either shown differently across both images, or shown ...

  8. Ray-Ban Meta - Wikipedia

    en.wikipedia.org/wiki/Ray-Ban_Meta_Smart_Glasses

    Ray-Ban Meta is a range of smartglasses created by Meta Platforms and EssilorLuxottica. They include two cameras, open-ear speakers, a microphone, and touchpad built into the frame. [ 1 ] They are latest in a line of smartglasses released by major companies including Snap Inc and Google and are designed as one component of Facebook’s plans ...

  9. Bluetooth - Wikipedia

    en.wikipedia.org/wiki/Bluetooth

    Bluetooth is a short-range wireless technology standard that is used for exchanging data between fixed and mobile devices over short distances and building personal area networks (PANs). In the most widely used mode, transmission power is limited to 2.5 milliwatts, giving it a very short range of up to 10 metres (33 ft).