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  2. Bluetooth - Wikipedia

    en.wikipedia.org/wiki/Bluetooth

    Website. www .bluetooth .com. A Bluetooth earbud, an earphone and microphone that communicates with a cellphone using the Bluetooth protocol. 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).

  3. 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 ...

  4. Active noise control - Wikipedia

    en.wikipedia.org/wiki/Active_noise_control

    Noise control is an active or passive means of reducing sound emissions, often for personal comfort, environmental considerations, or legal compliance. Active noise control is sound reduction using a power source. Passive noise control is sound reduction by noise-isolating materials such as insulation, sound-absorbing tiles, or a muffler rather ...

  5. How noise cancelling headphones work - AOL

    www.aol.com/news/noise-cancelling-headphones...

    Bose QuietComfort Earbuds Series II $ at Best Buy. Bose QuietComfort Earbuds Series II $ at Walmart. Bang & Olufsen Beoplay HX. If style is as important to you as sound quality, the Beoplay HX ...

  6. Headphones - Wikipedia

    en.wikipedia.org/wiki/Headphones

    Headphones are a pair of small loudspeaker drivers worn on or around the head over a user's ears. They are electroacoustic transducers, which convert an electrical signal to a corresponding sound. Headphones let a single user listen to an audio source privately, in contrast to a loudspeaker, which emits sound into the open air for anyone nearby ...

  7. Law limiting new oil wells in California set to take effect ...

    www.aol.com/news/law-limiting-oil-wells...

    A California law that bans drilling new oil wells near places like homes and schools will take effect after the oil industry on Thursday withdrew a referendum from the November ballot asking ...

  8. US FDIC nominee to be grilled on fixing agency, bank regulations

    www.aol.com/news/us-fdic-nominee-grilled-fixing...

    Show comments. WASHINGTON (Reuters) -Republican Senators questioned the experience of Christy Goldsmith Romero to lead the Federal Deposit Insurance Corporation (FDIC) or fix its cultural issues ...

  9. List of Bluetooth protocols - Wikipedia

    en.wikipedia.org/wiki/List_of_Bluetooth_protocols

    The Bluetooth protocol RFCOMM is a simple set of transport protocols, made on top of the L2CAP protocol, providing emulated RS-232 serial ports (up to sixty simultaneous connections to a Bluetooth device at a time). The protocol is based on the ETSI standard TS 07.10. RFCOMM is sometimes called serial port emulation.