Possible: Hi The human voice can get loud enough that it can cause permanent hearing damage. For 85 dB of sound pressure, safe exposure time is 8 hours and for every increase in 3 dB from there, safe exposure time is cut in half. So 88 dB is safe for 4 hr exposure. 91 dB is 2 hrs, etc. If you have ringing the day after, there's a good chance you sustained injury. Hope this helps
Answered 9/3/2017
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