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Loudspeaker. The hole below the lowest woofer is a port for a bass reflex system. A loudspeaker (commonly referred to as a speaker or speaker driver) is an electroacoustic transducer [ 1]: 597 that converts an electrical audio signal into a corresponding sound. [ 2] A speaker system, also often simply referred to as a speaker or loudspeaker ...
Equal-loudness contour. An equal-loudness contour is a measure of sound pressure level, over the frequency spectrum, for which a listener perceives a constant loudness when presented with pure steady tones. [ 1] The unit of measurement for loudness levels is the phon and is arrived at by reference to equal-loudness contours.
UE Boom is a portable speaker manufactured by Ultimate Ears, supporting Bluetooth and wired connections. [1] UE Boom has been praised for its industrial design, loudness, battery life, speakerphone capability, and its suitability for outdoor use, but criticized for its comparatively high price. The speaker was first on May 21, 2013, and went on ...
The Middleton is the loudest portable speaker in Marshall's lineup. It's also water-resistant, plays from all angles and lasts for 20 hours. Marshall just released its loudest portable speaker yet
It has drivers on all four sides for an all-angle sound experience. The post Marshall just released its loudest portable speaker yet — and it’s both lightweight and water-resistant appeared ...
Bluetooth HID is a lightweight wrapper of the human interface device protocol defined for USB. The use of the HID protocol simplifies host implementation (when supported by host operating systems) by re-use of some of the existing support for USB HID in order to support also Bluetooth HID. Keyboard and keypads must be secure.
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