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2. List of Bose headphones - Wikipedia

   en.wikipedia.org/wiki/List_of_Bose_headphones

   QuietComfort 20. The "QuietComfort 20" (QC20) and QC20i in-ear headphones were released in 2015 and are the company's first in-ear noise cancelling headphones. [ 19 ] It received a 2014 Red Dot Design Award. [ 20 ] Also, it received a CNET 's Editors' Choice Award of 4.5/5 points for its active noise-cancelling.

3. Silent disco - Wikipedia

   en.wikipedia.org/wiki/Silent_disco

   Silent disco. A silent disco or silent rave is an event where people dance to music listened to on wireless headphones. [1] Rather than using a speaker system, music is broadcast via a radio transmitter with the signal being picked up by wireless headphone receivers worn by the participants. Those without the headphones hear no music, giving ...

4. 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 ...

5. Grace Digital - Wikipedia

   en.wikipedia.org/wiki/Grace_Digital

   Grace Digital Inc is a consumer electronics company based in San Diego, with research and development locations in Cambridge, England; Taipei, Taiwan; and Seoul, Korea. It was founded in 2007 by James D. Palmer and Greg Fadul [citation needed]. The company’s main products are internet based radio receivers, audio archiving equipment, wireless ...

6. Wireless microphone - Wikipedia

   en.wikipedia.org/wiki/Wireless_microphone

   Singer Cody Simpson using a wireless microphone headset in a 2013 concert in Montreal. A wireless microphone, or cordless microphone, is a microphone without a physical cable connecting it directly to the sound recording or amplifying equipment with which it is associated. Also known as a radio microphone, it has a small, battery-powered radio ...

7. Nathaniel Baldwin - Wikipedia

   en.wikipedia.org/wiki/Nathaniel_Baldwin

   Headphones", two telephonic receivers on a headbow, were already in use by early wireless radio operators as early as 1906-1907, prior to Baldwin's telephonic receiver improvement and patent in 1910. [citation needed] In 1914, Baldwin started a business in East Millcreek, Utah called The Baldwin Radio Company. He powered the plant and the ...