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2. Wireless microphone - Wikipedia

   en.wikipedia.org/wiki/Wireless_microphone

   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 transmitter in the microphone body, which transmits the audio signal from the ...

3. Microphone - Wikipedia

   en.wikipedia.org/wiki/Microphone

   Over the years these microphones were developed by several companies, most notably RCA that made large advancements in pattern control, to give the microphone directionality. With television and film technology booming there was a demand for high-fidelity microphones and greater directionality.

4. Lavalier microphone - Wikipedia

   en.wikipedia.org/wiki/Lavalier_microphone

   When lavalier microphones are concealed under clothing, the clothing often scratches against the microphone. To minimize this problem, sound recordists sometimes wrap the head of the microphones in moleskin or place it inside a hollow-centered, column-shaped sponge and place it under a placard, behind a button, or within the knot of a tie.

5. Citizens band radio - Wikipedia

   en.wikipedia.org/wiki/Citizens_band_radio

   Shown with Astatic brand D-104 desk mic Cobra 18 WX ST II mobile CB radio with microphone Cobra 50 WX ST Handheld CB Radio Citizens band radio ( CB radio ) is a land mobile radio system , a system allowing short-distance one-to-many bidirectional voice communication among individuals, using two-way radios operating near 27 MHz (or the 11-m ...

6. Educational technology - Wikipedia

   en.wikipedia.org/wiki/Educational_technology

   These include Starfall, ABC mouse, [172] PBS Kids Video, Teach me, and Montessori crosswords. [173] Educational technology in the form of electronic books [109] offer preschool children the option to store and retrieve several books on one device, thus bringing together the traditional action of reading along with the use of educational technology.

7. List of Nintendo DS accessories - Wikipedia

   en.wikipedia.org/wiki/List_of_Nintendo_DS...

   The Nintendo DS Headset is the official headset for the Nintendo DS. It plugs into the headset port (a combination of a standard 3.5mm (1/8 inch) headphone connector, and a proprietary microphone connector) on the bottom of the system. It features one earphone and a microphone, and is compatible with all games that use the internal microphone.