Sound Transmission Loss
Of a partition, in a specified frequency band, ten times the common logarithm of the ratio of the airborne sound power incident on the partition to the sound power transmitted by the partition and radiated on the other side. The quantity so obtained is expressed in decibels, it is 10 times the logarithm to the base 10 of the reciprocal of the sound transmission coefficient of the configuration.
ASTM E90 Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions
ASTM E1375 Standard Test Method for Measuring the Interzone Attenuation of Furniture Panels Used as Acoustical Barriers
ASTM E1408 Laboratory Measurement of the Sound Transmission Loss of Door Panels and Door Systems
SAE J1400 Laboratory Measurement of the Airborne Sound Barrier Performance of Automotive Materials and Assemblies
Subjects: Architectural Acoustics