Material Testing Standards

• ISO 10534-2: 1985, Acoustics – Determination of sound absorption coefficient and impedance in an impedance tube – Part 2: Transfer-function Method
• ISO 13472-2 : 2010, Acoustics – Measurement of sound absorption properties of road surfaces in situ - Part 2: Spot method for reflective surfaces
• ASTM E1050-10: 2010, Standard Test Method for Impedance and Absorption of Acoustical Materials Using a Tube, Two Microphones and Digital Frequency Analysis System
• ASTM E2611-09: 2009, Standard Test Method for Measurement of Normal Incidence Sound Transmission of Acoustical Material Based on the Transfer Matrix Method