Page 10 - Laqfoil Technical Catalog
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Acoustical Properties:
Technical Specifications
• DIN EN 20354 (ISO 354): Acoustics - Measurement of Sound Absorption In A Reverberation Room, 100mm void
• DIN EN 20354 (ISO 354): Absorption Coefficients Guide for Typical installation using Stretched Materials with Minimum 45mm Insulation above, 100mm void
Frequency (HZ)
100
125
250
500
1k
2k
4k
Sound Absorption Coefficient (αω)
0.14
0.17
0.63
0.64
0.24
0.19
0.14
Perforated PVC Stretch Ceiling Membrane
Characteristic
Membrane only
Membrane plus acoustic panels
Sound Absorption Coefficient (αω)
αω = 0.3 – 0.4
αω = 0.85
Class of Sound Absorption
D (Absorbent)
B (Maximum Absorbency)
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