ASA S12.60-2019/Part 4

American National Standard for Acoustical Performance Criteria, Design Requirements, and Guidelines for Schools, Part 4: Acoustic Standards for Physical Education Teaching Environments
standard by American National Standards of the Acoustical Society of America, 09/25/2019

ASA S2.23-1998 (R2012)

American National Standard Single Cantilever Beam Method for Measuring the Dynamic Mechanical Properties of Viscoelastic Materials
standard by American National Standards of the Acoustical Society of America, 01/01/1998