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Sound Absorption: upholstered seat empty
Sound absorption coefficients and NRC ratings for building materials — fiberglass, carpet, concrete, drapery, ceiling tile, etc. per ASTM C423 and ASHRAE Ch.49
| material | product variant | alpha 1000 (dimensionless) | alpha 125 (dimensionless) | alpha 2000 (dimensionless) | alpha 250 (dimensionless) | alpha 4000 (dimensionless) | alpha 500 (dimensionless) | category | description | mounting | nrc (dimensionless) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| upholstered seat empty | fabric empty | 0.88 | 0.49 | 0.82 | 0.66 | 0.7 | 0.8 | seating | Fabric-upholstered theatre/auditorium seat — empty | Installed | 0.79 |
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