As I was doing research into the acoustics of silencers, I actually came across something interesting. Apparently in cases where a homicide was committed by a silenced firearm, it
creates distinctive wounds on the body because the silencer decreases bullet energy but accelerates energy release in the tissue.
Also want to note that although silencers do not actually silence a gun blast completely––the sound of a gun shot actually consists of
multiple different components (gunpowder gas flow muzzle wave, shock wave, the wave in the air column in front of the projectile as it exits the barrel, and the acoustic wave created by the collision of internal mechanisms within the firearm) and a silencer only reduces the first component of the firing sound (the gunpowder gas flow muzzle wave).
Sources
Arslan, Hakan, Mostafa Ranjbar, Erkan Secgin, and Veli Celik. "
Theoretical and experimental investigation of acoustic performance of multi-chamber reactive silencers."
Applied Acoustics 157, no. 1 (2020): 106987.
Hristov, Nebojša, Aleksandar Kari, Damir Jerković, Slobodan Savić, and Radoslav Sirovatka. "
Simulation and Measurements of Small Arms Blast Wave Overpressure in the Process of Designing a Silencer."
Measurement Science Review 15, no. 1 (2015): 27-34.
Missliwetz, J., W. Denk, and I. Wieser. "
Shots Fired with Silencers—A Report on Four Cases and Experimental Testing."
Journal of Forensic Science 36, no. 5 (1991): 1387-1394.
