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2. 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 .

3. Acoustic camera - Wikipedia

   en.wikipedia.org/wiki/Acoustic_camera

   Acoustic camera. An acoustic camera (or noise camera) is an imaging device used to locate sound sources and to characterize them. It consists of a group of microphones, also called a microphone array, from which signals are simultaneously collected and processed to form a representation of the location of the sound sources.

4. 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 ...

5. What older adults need to know about concussions

   www.aol.com/older-adults-know-concussions...

   A concussion is a mild form of traumatic brain injury, or TBI. It occurs when the skull and brain are rapidly jolted back and forth. This is usually the result of a bump, bang, or blow to the head ...

6. Noise-cancelling headphones - Wikipedia

   en.wikipedia.org/wiki/Noise-cancelling_headphones

   A microphone captures the targeted ambient sounds, and a small amplifier generates sound waves that are exactly out of phase with the undesired sounds. When the sound pressure of the noise wave is high, the cancelling wave is low (and vice versa). The opposite sound waves collide and are eliminated or "cancelled" (destructive interference ...

7. Sam Worthington on filming Kevin Costner's 'Horizon' and the ...

   www.aol.com/news/sam-worthington-filming-kevin...

   The gamble more than paid off. Since its release, "Avatar" has gone on to become the No. 1 highest-grossing movie of all time and the 2022 sequel, “The Way of Water,” isn't far behind at No. 3.