this post was submitted on 27 Nov 2023
395 points (98.5% liked)
Asklemmy
43943 readers
557 users here now
A loosely moderated place to ask open-ended questions
Search asklemmy ๐
If your post meets the following criteria, it's welcome here!
- Open-ended question
- Not offensive: at this point, we do not have the bandwidth to moderate overtly political discussions. Assume best intent and be excellent to each other.
- Not regarding using or support for Lemmy: context, see the list of support communities and tools for finding communities below
- Not ad nauseam inducing: please make sure it is a question that would be new to most members
- An actual topic of discussion
Looking for support?
Looking for a community?
- Lemmyverse: community search
- sub.rehab: maps old subreddits to fediverse options, marks official as such
- !lemmy411@lemmy.ca: a community for finding communities
~Icon~ ~by~ ~@Double_A@discuss.tchncs.de~
founded 5 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
Out of curiosity: did you ever test noise cancelling headsets in that high noise environment? Iโd think that in-ear and over-ear nc headphones should work quite well too.
No, because active noise cancellation doesn't offer any hearing protection. It doesn't make the noise go away, it works by sending out an extra soundwave which is a mirror inversion of noise to be cancelled, sends out peaks where there were troughs and troughs where there were peaks, and they cancel each other out as far as your brain is concerned. But to work the destructive soundwave has to be as loud as the sound it's cancelling, and now you have two sound waves blasting away, still moving air and putting pressure on your eardrums, and it's that pressure causes the damage to your hearing.
Proper PPE has a passive barrier that physically blocks the bulk of the vibration from reaching your eardrums in the first place. Active noise cancellation does kind of the opposite of that.