Rated Acoustic Door Acoustic Properties \u2014 Absorption Coefficients (125Hz\u20134kHz)
Solid core door with perimeter seals, drop seal, and acoustic frame achieving STC 35-55 rating. The primary function is sound insulation between rooms, not absorption. Some low-frequency panel absorption from the mass-spring behaviour of the sealed door.
Absorption Coefficients by Octave Band
| Frequency (Hz) | 125 | 250 | 500 | 1000 | 2000 | 4000 |
|---|---|---|---|---|---|---|
| α (absorption) | 0.15 | 0.10 | 0.08 | 0.08 | 0.06 | 0.05 |
RT60 Impact
Acoustic doors are designed for sound insulation (STC), not absorption. They have minimal effect on RT60 within the room
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Frequently Asked Questions
What is the NRC of Rated Acoustic Door?
Rated Acoustic Door 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 Rated Acoustic Door typically used?
Rated Acoustic Door is typically used as a wall (door opening) treatment. Solid core door with perimeter seals, drop seal, and acoustic frame achieving STC 35-55 rating.
How much does Rated Acoustic Door reduce RT60?
Acoustic doors are designed for sound insulation (STC), not absorption. They have minimal effect on RT60 within the room
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