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cancellation effect |
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cancellation effectA condition in which positive and negative charges or same frequencies of positive and negative polarities nullify each other. The cancellation effect may result from unintentional interference in a line or circuit, or it may be purposely created. For example, noise cancellation systems generate frequencies with opposite polarities to the undesirable signals in order to eliminate them. 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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| With just a press of a switch the user can disable the noise cancellation effects of the headphones and allow ambient sounds to pass through, thereby hearing the flight attendant or co-worker trying to get your attention without removing the headphones. |
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