Sound Transmission Loss of Textile Barriers
topic
Transmission loss testing mounts a fabric specimen between two reverberant chambers and measures the difference in sound pressure level at defined frequencies with and without the specimen, calculating the sound reduction index (SRI) in decibels across the 100 to 3150 hertz frequency range according to ISO 140 protocols.
Role
Quantifies the airborne sound insulation performance of heavyweight coated fabrics, multilayer noise barrier blankets, and composite acoustic textiles used in industrial enclosures, HVAC duct lining, and construction noise barriers where mass law and air gap sealing govern performance.