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?
I'm looking to find out whether any brand of in-ear headphones also carry a noise reduction rating (NRR). I'm not so much shopping for headphones as for earplugs with a headphone feature. [more inside]
How can I get headphones to work with my hearing aids? The noise leaking out of them is making my fellow commuters (and me) unhappy. [more inside]
A few years ago I heard a popular scientist on the radio discussing the effects of listening to music via earbud headphones. He said that if someone can hear the music I'm listening to, I am doing permanent damage to my ears. Is this true? I would appreciate reference to any peer-reviewed scientific research on this topic, if available.
Why do in-ear headphones sound much louder when I put the left-labelled one in my right ear and the right-labelled one in my left ear? [more inside]
Two questions about noise cancelling headphones: 1) Are JVC HA-NC80s any good?; and 2) Are NC headphones (in general) bad for your hearing? [more inside]
headphone choice for non symmetrical hearing: my father is mostly-deaf in one ear. He wears an in-ear hearing aid that works well. He would like to find the following... [more inside]
After cleaning my ears, adjusting the left/right panning controls and developing the paranoid belief that I was starting to lose my hearing in one ear... I switched the earphones around, and everything sounds fantabulous! What is that? More... [more inside]