| NoiseBuster.net :: NoiseBuster Noise Cancelling Earmuffs for Safety :: (536 words) |
 | A new innovation in hearing protection, the NoiseBuster® Active Noise Reduction Safety Earmuff combines superior passive hearing protection (ANSI Certified 26 NRR) with the most advanced active noise reduction ("ANR") technology. |
| Noises generated by engines, fans, motors and other similar devices are typically dominated by low frequencies--frequencies that cannot be stopped by passive earmuffs. |
| Because low-frequency noise masks speech, it is difficult for a person to hear and comprehend speech and warning signals when exposed to such noise. |
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