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2. Take 20% Off Raycon Earbuds, Headphones and Speakers ... - AOL

   www.aol.com/entertainment/20-off-raycon-earbuds...

   Raycon has an amazing selection of best selling earbuds, headphones and more which rival the most popular brands — but best of all, they’re significantly less expensive. And right now, you can ...

3. Visual reinforcement audiometry - Wikipedia

   en.wikipedia.org/wiki/Visual_reinforcement_audio...

   Visual reinforcement audiometry ( VRA) is a key behavioural test for evaluating hearing in young children. [1] [2] First introduced by Liden and Kankkunen in 1969, VRA is a good indicator of how responsive a child is to sound and speech and whether the child is developing awareness to sound as expected. Performed by an audiologist, VRA is the ...

4. Bone conduction - Wikipedia

   en.wikipedia.org/wiki/Bone_conduction

   Bone conduction. Bone conduction is the conduction of sound to the inner ear primarily through the bones of the skull, allowing the hearer to perceive audio content even if the ear canal is blocked. Bone conduction transmission occurs constantly as sound waves vibrate bone, specifically the bones in the skull, although it is hard for the ...

5. Hearing range - Wikipedia

   en.wikipedia.org/wiki/Hearing_range

   Hearing range describes the frequency range that can be heard by humans or other animals, though it can also refer to the range of levels. The human range is commonly given as 20 to 20,000 Hz, although there is considerable variation between individuals, especially at high frequencies, and a gradual loss of sensitivity to higher frequencies ...

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. 4 smartphone rules parents should follow, according to a ...

   www.aol.com/4-smartphone-rules-parents-according...

   Instead, when schools let kids keep the phone in their pocket, he added, “you have to hide it behind a book or under your desk if you want to text and watch video and watch porn, which the kids ...

8. Absolute threshold of hearing - Wikipedia

   en.wikipedia.org/wiki/Absolute_threshold_of_hearing

   Absolute threshold of hearing. The absolute threshold of hearing ( ATH ), also known as the absolute hearing threshold or auditory threshold, is the minimum sound level of a pure tone that an average human ear with normal hearing can hear with no other sound present. The absolute threshold relates to the sound that can just be heard by the ...

9. Fifth generation of video game consoles - Wikipedia

   en.wikipedia.org/wiki/Fifth_generation_of_video...

   The 32-bit/64-bit era is most noted for the rise of fully 3D polygon games. While there were games prior that had used three-dimensional polygon environments, such as Virtua Racing and Virtua Fighter in the arcades and Star Fox on the Super NES, it was in this era that many game designers began to move traditionally 2D and pseudo-3D genres into 3D on video game consoles.