Standard Test Method for Objective Measurement of the Speech Privacy Provided by a Closed Room
NORMA vydaná dňa 1.11.2017
Designation standards: ASTM E2638-10(2017)
Publication date standards: 1.11.2017
The number of pages: 8
Approximate weight : 24 g (0.05 lbs)
Country: American technical standard
Kategória: Technické normy ASTM
Keywords:
speech privacy, speech security,, ICS Number Code 91.120.20 (Acoustics in buildings. Sound insulation)