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Acoustic Duvets The Acoustic transparent fabric creates a perfect face
2
NDFR cotton
140 g/m
50m / 164ft
BS5867, M1, B1
260cm / 102”
Can be custom dyed
covering for use with our duvet systems. It allows the sound to pass through which is then collected fully by the duvet infill allowing for the desired acoustic
Black ACT001
environment to be achieved. Due to the fabric make-up it screens the framework superbly and with the range of colours available it can be incorporated to suit any decor.
Key
Sample Size: 8m2 Object: Duvet with solid infill and acoustic transparent cover Total Material Thickness; 100mm
Sample Out: Sample In:
Temp: 15˚C Temp: 15˚C
Humidity: 45% Humidity: 44%
Frequency (Hz)
Frequency (Hz)
100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000
αs
1.04 1.09 1.07 1.00 1.14 1.23 1.22 1.35 1.37 1.26 1.31 1.27 1.25 1.22 1.20 1.16 1.21 1.26
αs αp
T1 T2 w
Absorption Coefficient of the sample Centre Frequency Absorption Coefficient Is the mean reverberation times of the empty reverberation room in each frequency band (sec) Is the mean reverberation times of the reverberation room containing the test specimen in each frequency band (sec) Has been calculated in accordance with BS EN ISO 11654:1997
BS EN ISO 11654:1997 αw, = 1.00 / Classification: A Sound absorption for use in buildings
BS EN ISO 345:2003 Measurement of absorption in a reverberation room
Sound absorption coefficient αs
Acoustics - Acoustic Duvets
(Based on optimum conditions)
Test Receiving Room Volume: 300m2 Condition: Clean Type: Large Reverberation Room Location: Sound Research Laboratories
T1 (s)
T2 (s)
6.16 6.87 6.35 6.43 6.63 6.50 5.81 4.87 4.99 5.29 5.68 5.64 5.12 4.47 3.82 3.13 2.48 1.89
3.00 3.08 3.00 3.12 2.96 2.81 2.68 2.34 2.35 2.52 2.55 2.59 2.50 2.36 2.18 1.96 1.66 1.36
αs αp 100 1.04 125 1.09 1.00 160 1.07 200 1.00 250 1.14 1.00 315 1.23 400 1.22 500 1.35 1.00 630 1.37 800 1.26 1000 1.31 1.00 1250 1.27 1600 1.25 2000 1.22 1.00 2500 1.20 3150 1.16 4000 1.21 1.00 5000 1.26 Frequency (Hz)