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A comment on The volume is too damn high on flights. Parent comment

Re:The volume is too damn high on flights by userbinator on Friday February 06, 2015 @10:51AM (#9009499)
NIOSH says 15 minutes at 100dB, which is still far longer than the combined duration of all announcements on a flight.

http://www.sengpielaudio.com/PermissibleExposureTime.htm

I think the 99dB value the author of the article measured is not arbitrary - and was chosen specifically to meet some regulations.

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Re:The volume is too damn high on flights by kissickas on Friday February 06, 2015 @01:30PM (#9010630)
That depends on the flight. I've timed the announcements on some medium-length flights totaling upwards of 30 minutes.
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