Suppressors Thunder Beast Eduction Video #3 Semi verse Bolt wave forms

[TBACRAY]

Ok here is a quick video with semi and bolt gun wave forms for you nerds

 

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Slides 1 and 2

 

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Slide 3: Shooter’s ear profiles in Pascals for subsonic and supersonic ammo on bolt action showing the presence of the supersonic crack for the supersonic ammo vs no crack on the subsonic ammo

 

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Slide 4: Semi vs Bolt with subsonic ammo at the shooter’s ear. The blue profile (bolt action) is the baseline for how quiet that suppressor/ammo/length of barrel can be at the shooter’s ear. The grey waveform shows the additional sound signature caused from the semi-auto weapon system. There are 4 peaks in the grey waveform. Starting at the left side the first peak is the trigger pull/hammer hit/primer and powder ignition. The next peak is the gas reaching the piston in the BCG. Peak 3 is the BCG opening and is the “port pop”. Finally peak 4 is the BCG picking up and closing on the next round.

 

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Slide 5: Shooter’s ear wave profiles for supersonic vs subsonic ammo. The 4 events defined in the previous slide are visible for both ammunitions. The 4 events just happen sooner/faster for the supersonic ammunition. The peaks for the gas reaching the BCG and for the BCG opening are both louder for the supersonic ammunition

 

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Slide 6: There are 4 wave profiles here. The front (dark blue) is the wave profile from the mil spec mic location for the bolt action rifle. This also serves as a baseline comparison. The other 3 profiles are Mil Left, Mil Right and Shooter’s Ear for the same ammunition in the semi-auto rifle. It is clear that the port pop from the rifle is louder at the mil spec microphone locations than the report from the suppressor. The trigger fall is shifted in the ear vs mil spec microphone locations because of the distance from the trigger to the microphones.