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antinoise |
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antinoise [‚an·tē′nȯiz] (acoustics) Noise that is deliberately created to mimic an existing noise field in antiphase so that the two fields cancel each other, resulting in silence. Also known as antisound. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The antinoise circuitry can squelch sound at frequencies below roughly 1,200 hertz, reducing the noise to as little as one-eighth of its untreated loudness, says Michael A. The future may see increased application of these systems, particularly where one antinoise device can "cover" the noise from vibrators and other equipment at the same time. Engineers are now designing equipment that uses antinoise to silence loud machinery. |
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