Posted 28 August 2010 - 01:46 PM
Watching the first video again, It looks like the 60 Hz peak is also prominent when you are not shooting, leading me to be more confident that it is AC line noise. Did you guys do a background subtraction? That will probably remove most of the 60 Hz and give you the spectrum of sound due only to the marker firing.
I don't know that much about acoustics, but would integrating the FFT as a function of frequency give you an indication of overall loudness? This would give a single number to compair vs looking at the entire spectrum. (I may be totally off base here, let me know if I'm wrong)
I think what you guys are doing is great, working on the science behind paintball. So much in PB is vodoo & myth, it's good to see people testing things and thinking for themselves.
Back off man, I'm a scientist!