Curtain fabrics acoustic

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Sound tests according to SS-EN ISO 354 have made it possible to divide the fabrics in different audio classes from A-E depending on how well they absorb sound.

Diagram according to Vilano

Sound class A-B

Class A αw: 0,9 och 1,0
Class B αw: 0,80 och 0,85

Sound class C-D

Class C αw: 0,60 – 0,75
Class D αw: 0,30 – 0,55

Sound class E

Class E αw: 0,15 – 0,25 

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