Are noise-cancelling headphones damaging my hearing?
July 19, 2015 11:47 PM Subscribe
According to my understanding of how noise-cancelling headphones work, the headphones detect low-frequency ambient noise levels near my ears, and emit a frequency which cancels out the ambient noise, so that instead I hear silence in place of the noise. Although I can't hear these noise-cancelling frequencies, I'm wondering whether they might be having a cumulative negative effect on my hearing. Is it only audible frequencies that have the potential to harm? Or can prolonged exposure to inaudible frequencies have a detrimental physical effect?