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Registered Member #1320
Joined: Sat Feb 16 2008, 01:31AM
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Posts: 67
Ya your right, I did that backwards on mine. Anyways I just used the first sound peak from each channel. I had my recording set at 96000hertz so accuracy for measurement is .00001 seconds (make sure to use beginning of peak) at 20 feet~6.096meters my measure time was .0096seconds so 6.096/.00989seconds~ 616.38m/s +or - 0.6m/s due to accuracy limitation. Measurement accuracy will get significantly worse at closer distances or with lower recording frequencies. I originally thought of using optical sensors, but I figured the muzzle flash would mess that up,
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5KJ 4 stage rail gun (complete)