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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 ...
The first "Bluetooth Headset" model was released on 1 November 2010, [17] using a similar design to the IE2 earphones. [ 18 ] [ 19 ] Ambient noise sensing automatically adjusts the volume level based on background noise so that, in theory, the user should not have to adjust the volume when walking between quiet and noisy environments.
A throat microphone, also called a laryngophone, is a type of contact microphone that absorbs vibrations directly from the wearer's throat by way of single or dual sensors worn against the neck. The sensors, called transducers, can pick up speech even in extremely noisy or windy environments, such as on a motorcycle or in a nightclub.
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 ...
Noise-cancelling headphones are headphones that suppress unwanted ambient sounds using active noise control (ANC). Active noise cancellation makes it possible to listen to audio content without raising the volume excessively. In an aviation environment, noise-cancelling headphones increase the signal-to-noise ratio significantly more than ...
Ford notified NHTSA of the recall on Aug. 23. FORD CANCELS PLANS FOR ELECTRIC THREE-ROW SUV "An engine intake valve that fails may lead to catastrophic engine damage resulting in a loss of motive ...
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The laptop expanded to a full desktop set, including a detachable Bluetooth keyboard, Bluetooth mouse, and radio-frequency Media Center remote. It was praised for the high-quality sound system which included 8 separate ¾" speakers below the screen and a 1¾" subwoofer on the bottom of the machine, ported to the right-hand side.
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