2 ms·
30 seconds isn't nearly long enough for 95 a decibel noise to permanently hurt your ears. Even at 100dB permanent damage take on the order of minutes, not secon
by __david__ 8y ago
30 seconds isn't nearly long enough for 95 a decibel noise to permanently hurt your ears. Even at 100dB permanent damage take on the order of minutes, not seconds. At 90 dB it's measured in hours. Your BART ride isn't hurting you.
- komali2 8y agoTwice a day, every day, for years? Do you have evidence to support this claim because it goes against my own research.
- __david__ 8y agoThe OSHA standards are a good starting point. Factory workers aren't even required to wear ear protection if the average noise over their 8 hour shift is under 85 dB. For 95 dB it's something like 15 minutes. From what I understand (and from what I've experienced), the every day repetition isn't the issue, it's the sustained noise for long periods of time. 2 little noisy bursts a day that are hours apart just aren't going to affect anything.