Below you’ll find sound absorption test results (SAA) and also noise reduction coefficients (NRC) for our most popular product, dual or double layer producer’s choice acoustic blanket. It has been rested by Riverbank Acoustical Laboratories in Geneva, IL. Riverbank is accredited by the U.S. Department of Commerce, National Institute of Standards and Technology (NIST) under … Continue reading Sound absorption test result and NRC for double layer blankets