Md. Code, Cts. & Jud. Proc. § 10-911
Current with effective changes from the 2024 legislative session, chs. 2-121
In any legal proceeding of any nature, the quantities and qualities of noise may be proved by evidence of tests made with any instrument designed and constructed to measure and indicate or record the presence of sound, including such devices commonly called sound level meters and frequency analyzers.
Md. Code, CJ § 10-911