2018 Maryland Code
Courts and Judicial Proceedings
Title 10 - Evidence
Subtitle 9 - Miscellaneous Rules
§ 10-911. Sound level meters and frequency analyzers
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.