A coil or capacitor which emits acoustic noise will, conversely, also be microphonic, and the high-end audio industry takes steps with coils and capacitors to reduce these microphonics ( emissions ) because they can muddy a hi-fi amplifier's sound.
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The QuietComfort Acoustic Noise Cancelling headset from Bose is designed to block or compensate for background noise so the audio that reaches the listener's ears will be identical to what he would hear in a quiet room . ( Cummings, Dayton Daily News ).
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New to the certification includes Image loading capacity, RGB settings for visual ergonomics section; vertical tile for Work load ergonomics section; tightened noise requirement for " all-in-one computers " for emissions ( acoustic noise ) section; dropped co-operative agreement with at least one professional electronics recycling company requirement in Ecology section; lowered energy consumption in Energy section.
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As clear evidence of its shift, when it opens its trade show in Orlando on Friday, a featured new item among the 40, 000 products of 350 manufacturers _ including hundreds of suitcases and backpacks _ will be the $ 299 Bose QuietComfort Acoustic Noise Canceling Headset, a way to listen to conversation on a plane while screening out jet roar.
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The company's QuietComfort 2 acoustic noise-canceling headphones, which cost about $ 300, use the noise-reduction electronics, but can also pipe in audio from a portable music or DVD player, creating a better listening environment for the noise you want to hear . " The microphone in the earpiece is constantly monitoring what you hear, comparing the two signals and figuring out what to cancel, " Gauger explained.
