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Another safety tip: SPL meters often show (say) "the average level over the course of the past half second" whereas the super loud, and dangerous ~160 dBSPL blast from a gunshot is a transient lasting a tiny fraction of a second and can cause permanent NIHL [noise induced hearing loss] yet the run-of-the-mill SPL meter will only show a much smaller value from the event because it is a small percentage of that second/half second averaged interval.
You can test for this with a hand clap. Using the NIOSH app on my iphone a single hand clap (close to the standard mic) shot the reading up about 40 dB. Quick repeated claps, however, brought it up 60 dB.
Were my repeated claps any louder? No. It shows that a single loud transient is not successfully registered, at least when used in the default, standard mode. [It has all sorts of interesting alternative modes which might be better suited to such a task of properly registering peaks]:
Last edited by m. zillch; 05-22-2019 at 10:43 PM.