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Coustone - Techical
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ACOUSTIC PERFORMANCE : |
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Coustone exhibits both sound absorption and sound
attenuation. The data presented below summarises the results of tests carried
out at Salford University. However if the information you require is not
shown, please contact our technical sales department. |
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SOUND ABSORPTION : |
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Random incident sound absorption coefficients
when tested to BS 363811963 ( similar to ISO 354 ) are detailed below : |
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SOUND ABSORPTION COEFFICIENTS
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Hz
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125
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250
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500
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1000
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2000
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4000
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NRC
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14mm Coustone +
50mm Air Gap
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0.12
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0.26
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0.66
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0.93
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0.73
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0.73
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0.65
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28mm Coustone +
50mm Air Gap
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0.13
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0.48
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0.83
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0.90
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0.88
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1.08
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0.77
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28mm Coustone +
50mm Mineral Wool
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0.36
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0.79
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0.97
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0.97
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0.99
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1.10
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0.93
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