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A crystal earpiece typically consists of a piezoelectric crystal with metal electrodes attached to either side, glued to a conical plastic or metal foil diaphragm, enclosed in a plastic case.
This allows portable audio devices to make use of the louder or better sound quality of a home audio system or car stereo without requiring a wired connection. They are often used in cars [ 1 ] but may also be in fixed locations such as broadcasting from a computer sound card throughout a building.
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 ...
New headphones, a treadmill for your New Year's fitness goals and the accessory you need for your new KitchenAid stand mixer. ... This three-piece set can roll and cut homemade pasta dough into ...
The holiday season is all about crafting homemade coziness: hot chocolate, cookies and now, with this chic stovetop popper, popcorn. ... Beats Studio Pro x Kim Kardashian Headphones, one of the ...
A person working on a circuit board at a Re:publica makerspace. The maker culture is a contemporary subculture representing a technology-based extension of DIY culture [1] that intersects with hardware-oriented parts of hacker culture and revels in the creation of new devices as well as tinkering with existing ones.
Remotes, headphones, and wallets can thus be easily lost as people are often thinking about what they are watching, listening to, or purchasing when setting these items down.
This varied the force of attraction on the diaphragm, causing it to vibrate. The vibrations of the diaphragm push and pull on the air in front of it, creating sound waves. Standard headphones used in telephone work had a low impedance, often 75 Ω, and required more current than a crystal radio could supply. Therefore, the type used with ...
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