Numerical Simulation and Experiment on Impulse Noise in a Small Caliber Rifle with Muzzle Brake

Table 1

Average measured SPL_peak and OASPL of impulse noise.

	SPLpeak (dB)	OASPL (dB)	Difference (dB)
Point θ = 90°
P1	152.38	126.26	26.12
P2	151.21	124.83	26.38
P3	150.44	123.34	27.10
P4	150.35	121.82	28.53
Point θ = 45°
P5	156.08	131.73	24.35
P6	153.9	130.18	23.72
P7	152.54	128.65	23.89
P8	150.21	125.6	24.61
Point θ = 0°
P9	161.63	132.77	28.86
P10	159.85	131.01	28.84
P11	157.38	130.08	27.30
P12	156.11	129.2	26.91