Recent Posts
Novelty Test Report VIII - Leather
We tested 1.4 mm of premium top-grain cowhide leather to determine its sound transmission loss and insulation ratings using ASTM E90 and ASTM E413 procedures. The results may surprise you. Check out our latest novelty test report to see how leather performed in Riverbank’s transmission loss suite.
Novelty Test Report VII - Sand
We tested approximately 5-1/2 inches of fine mason sand to determine its sound absorption coefficients across a wide range of frequencies using ASTM C423 procedures. The results may surprise you. Check out our latest novelty test report to see how this common material performed in Riverbank’s reverberation chamber.
Understanding Sound Transmission Class (STC) Ratings and Testing: What Is It and What Do The Results Mean?
Sound Transmission Class (STC) is a single number that describes the ability of a building material or partition to block airborne sound. STC is a laboratory test result defined by ASTM E413 for sound transmission loss testing performed according to ASTM E90.