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2. 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 ...

3. Headphones - Wikipedia

   en.wikipedia.org/wiki/Headphones

   Headphones on a stand. 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 ...

4. Hearing aid - Wikipedia

   en.wikipedia.org/wiki/Hearing_aid

   In developed countries FM systems are considered a cornerstone in the treatment of hearing loss in children. More and more adults discover the benefits of wireless FM systems as well, especially since transmitters with different microphone settings and Bluetooth for wireless cell phone communication have become available. [41]

5. Raymond A. Litke - Wikipedia

   en.wikipedia.org/wiki/Raymond_A._Litke

   Raymond A. Litke. Raymond A. Litke (1920-1986) was an American electronic engineer, the inventor of a practical wireless microphone, and the first to patent the wireless microphone. He was born and raised on a farm near Alma, Kansas, but spent most of his adult life in San Jose, California.

6. 62 Gifts for Teens That Are Actually Cool, According to Real ...

   www.aol.com/lifestyle/72-gifts-teens-actually...

   Beats Pill Wireless Bluetooth Speaker. ... Boasting advanced microphone filters for a cleaner sound, multicolored reversible suspension headbands and dual-zone RGB lighting amongst other cool ...

7. The 30 Best 'Cool' Gifts for Teens in 2022

   www.aol.com/lifestyle/best-gifts-for-teens...

   The Kodak Step Slim Mobile Photo Printer, for instance, lets teens take photos from their cell phones and print them out to share with friends. And the Rukus FX music mixer allows for music and ...