wacki
Member
I'm curious to see if anyone has taken the time to measure dB background levels at a outdoor firing range. You aren't shooting, you are just sitting in your own lane with people shooting in the lanes next to you. Back of the envelope calculations say there's a 6-15 dB drop. Roofs and walls complicate things and increase noise levels.
Most of the sound measuring devices on amazon have a max of 130 dB which is way too low. I found this PDF on how to measure firearm sound. They used a 1796€ GRAS 40DP pressure microphone. The stats on that microphone certainly measure up to the task:
Frequency range 6.5 Hz - 140 kKz
Dynamic range 50 dB - 184 dB re. 20µPa
So it would appear that measuring firearm dB levels requires a significant monetary commitment with highly specialized equipment. I'm wondering if there's a cheaper way or way I can borrow / lease equipment. Or if there's a alternative equipment.
As far as I know the only people in the state of Indiana that own this kind of stuff are Universities and possibly hearing clinics.
Most of the sound measuring devices on amazon have a max of 130 dB which is way too low. I found this PDF on how to measure firearm sound. They used a 1796€ GRAS 40DP pressure microphone. The stats on that microphone certainly measure up to the task:
Frequency range 6.5 Hz - 140 kKz
Dynamic range 50 dB - 184 dB re. 20µPa
So it would appear that measuring firearm dB levels requires a significant monetary commitment with highly specialized equipment. I'm wondering if there's a cheaper way or way I can borrow / lease equipment. Or if there's a alternative equipment.
As far as I know the only people in the state of Indiana that own this kind of stuff are Universities and possibly hearing clinics.
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