Gunfire can be confused with other sounds that can sound similar, such as firework explosions and cars backfiring. Gunfire noise propagation is anisotropic. The sounds may be heard at greater distances in the direction of bullet travel than behind or beside the firearm.
Urban areas typically exhibit diurnal noise patterns where background noise is higher during the daytime and lower at night, where the noise floor directly correlated to urban activity (e.g., automobile traffic, airplane traffic, construction, and so on). Firearm muzzle blast may be masked by ambient noise during daytime; but may be detected at greater distances during the quieter hours of darkness. A popular urban gunfire locator system typically uses six to ten audio sensors per square mile for trilateration.(two or three per square kilometer)
A silencer can be attached to the muzzle of a firearm to decrease the audio signature of high velocity gas released from the muzzle when firing the weapon. The sound of firing is only decreased and is still considerable. Silencers attached to the muzzle will not reduce the sound of high velocity gas released from other locations like the gap between the cylinder and barrel of a revolver. A muzzle silencer is similarly ineffective in reducing the snap of a supersonic bullet, or the noise produced by the mechanical action of a self-loading firearm.
Urban areas typically exhibit diurnal noise patterns where background noise is higher during the daytime and lower at night, where the noise floor directly correlated to urban activity (e.g., automobile traffic, airplane traffic, construction, and so on). Firearm muzzle blast may be masked by ambient noise during daytime; but may be detected at greater distances during the quieter hours of darkness. A popular urban gunfire locator system typically uses six to ten audio sensors per square mile for trilateration.(two or three per square kilometer)
A silencer can be attached to the muzzle of a firearm to decrease the audio signature of high velocity gas released from the muzzle when firing the weapon. The sound of firing is only decreased and is still considerable. Silencers attached to the muzzle will not reduce the sound of high velocity gas released from other locations like the gap between the cylinder and barrel of a revolver. A muzzle silencer is similarly ineffective in reducing the snap of a supersonic bullet, or the noise produced by the mechanical action of a self-loading firearm.
Marksman Trick Shots
Reviewed by AFL Latest
on
April 27, 2017
Rating:
Reviewed by AFL Latest
on
April 27, 2017
Rating:
