Eardrum Suck: The Mystery Solved (2019)
11–16 of 16 posts
Re: Eardrum Suck: The Mystery Solved (2019)
#12> More advanced noise-canceling headphones, such as the Bose QC35 IIs and Sony WH-1000XM3s, add feed-forward noise-canceling, which uses a microphone (or two) on the outer shell of the headphones to pick up the environmental noise. My oooold Bose QC15s already have microphones on the outer shell - not sure what they are used for, but they are definitely there, with a quite prominent grille...
Re: Eardrum Suck: The Mystery Solved (2019)
#13I experience this, and find noise cancelling headphones painful to wear. My assumption had always been that the antiphase somehow created a * hand-wavy * “DC offset” in eardrum pressure. But if this article is correct, the pain is perceptive rather than physical. Given how complicated perception is, it won’t surprise me. Maybe there’s a mind trick to stop experiencing the pain.
the pain is real, but caused by muscle contraction/cramp as a reaction to a sensation. You've taught yourself to wince until it hurts, and now contribute the pain to external factors. You've come to expect the pain, so it'll hurt.
The mind trick is right there: understand that you cause the pain yourself as reaction to a sensation and be mindful in situations where it might happen. You will find that the pain is caused from expectation and habit, this knowledge will break the cycle. Keep it up a for a few months and you'll untrain your habit a great deal.
Re: Eardrum Suck: The Mystery Solved (2019)
#14Perhaps a stupid question, as I've never experienced this, but it sounds like the effect is most pronounced when noise cancelling is first engaged. Could you simply enable noise cancelling before putting on the headphones? And then perhaps place them onto your ears slowly?
Re: Eardrum Suck: The Mystery Solved (2019)
#15Someone at work once explained the origin to me (and my employer has done work for more than one of the manufacturers of noise cancelling headphones). The cause, as identified in the article, is when expected low frequency sound components are missing. The normal "real world" way you selectively lose low frequencies is when there is a pressure differential across the eardrum - this stretches it and prevents it vibrat…
I've had the opportunity to use a variety of noise cancelling headphones over the years, from various brands, both in-ear and over-ear, and they all had this effect.
The good news is that you can become completely accustomed to it: after a while, the brain understands that there's no pressure imbalance, and it becomes a non-issue. Not hearing low frequencies is exactly what we expect from the product.
The article goes further to discuss some slope in a graph around 500Hz, which might be true, but I don't subscribe to that. It seems unnecessary to explain the observed facts and adds nothing.
What is not addressed at all is why all models seem to emit a subtle continuous shhhhhhh across a broad range of high frequencies. It's so subtle that you can only notice it when the outside environment is already quiet. I've never been certain whether it's just noise from the signal processing. My intuition is that it's artificially added to prevent inducing tinnitus in some users.