Traditional methods of protecting the hearing of people who work in areas with very high noise levels
Question:
Traditional methods of protecting the hearing of people who work in areas with very high noise levels have consisted mainly of efforts to block or reduce noise levels. With a relatively new technology, headphones are worn that do not block the ambient noise. Instead, a device is used which detects the noise, inverts it electronically then feeds it to the headphones in addition to the ambient noise. How could adding more noise reduce the sound levels reaching the ears?
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Socalled active noise reduction devices work on the principle of interference If the electronics ...View the full answer
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