Hardwood Timber Floor Acoustic Properties \u2014 Absorption Coefficients (125Hz\u20134kHz)
Solid or engineered hardwood flooring on joists or concrete slab. Low absorption across all frequencies. Some low-frequency absorption from panel resonance over joist cavities.
Absorption Coefficients by Octave Band
| Frequency (Hz) | 125 | 250 | 500 | 1000 | 2000 | 4000 |
|---|---|---|---|---|---|---|
| α (absorption) | 0.15 | 0.11 | 0.10 | 0.07 | 0.06 | 0.07 |
RT60 Impact
Hardwood floors contribute minimal absorption. Adding a rug or carpet overlay can reduce RT60 by 0.10-0.20s
Frequently Asked Questions
What is the NRC of Hardwood Timber Floor?
Hardwood Timber Floor has an NRC (Noise Reduction Coefficient) of 0.10, calculated as the arithmetic mean of absorption coefficients at 250, 500, 1000, and 2000 Hz per ASTM C423.
Where is Hardwood Timber Floor typically used?
Hardwood Timber Floor is typically used as a floor treatment. Solid or engineered hardwood flooring on joists or concrete slab.
How much does Hardwood Timber Floor reduce RT60?
Hardwood floors contribute minimal absorption. Adding a rug or carpet overlay can reduce RT60 by 0.10-0.20s
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