[SML] stage gunfire noise levels

[billn at peak.org]

> Thanks Dale. I did the same quick google search (and a few longer ones...).
> I'm also reasonably well-versed in the Australian workplace safety laws and
> regulations. What I'm trying to do is put together something a little more
> practical - something that we can use in day-to-day management of noise -
> particularly gunshots. I know for example that I am not allowed to exceed
> 140dB with unprotected ears. I suspect that I want the SPL to be a fair bit
> lower than that to give a reasonable safety margin for two-show days, more
> than one gunshot per show, etc. I'm not confident that a hand-held dB meter is
> capable of accurately measuring the sound - am I worrying needlessly?

Most dB meters do not handle single impulse noises well.

If you have a sensor calibrated for such noise (maybe borrow one from some
explosives researchers), then you need a recording oscilloscope or similar
device to record the waveform.

Bill