Perforated Metal Panel Acoustic Properties \u2014 Absorption Coefficients (125Hz\u20134kHz)
Steel or aluminium panels with circular, slotted, or custom perforations backed by acoustic fleece or mineral wool. Combines absorption performance with a clean architectural finish. Available flat, curved, or corrugated.
Absorption Coefficients by Octave Band
| Frequency (Hz) | 125 | 250 | 500 | 1000 | 2000 | 4000 |
|---|---|---|---|---|---|---|
| α (absorption) | 0.40 | 0.70 | 0.80 | 0.85 | 0.75 | 0.65 |
RT60 Impact
Installing 20m² of perforated metal ceiling in a 100m³ room reduces RT60 by approximately 0.38s at 500Hz
Manufacturers & Brands
Frequently Asked Questions
What is the NRC of Perforated Metal Panel?
Perforated Metal Panel has an NRC (Noise Reduction Coefficient) of 0.75, calculated as the arithmetic mean of absorption coefficients at 250, 500, 1000, and 2000 Hz per ASTM C423.
Where is Perforated Metal Panel typically used?
Perforated Metal Panel is typically used as a ceiling and wall treatment. Steel or aluminium panels with circular, slotted, or custom perforations backed by acoustic fleece or mineral wool.
How much does Perforated Metal Panel reduce RT60?
Installing 20m² of perforated metal ceiling in a 100m³ room reduces RT60 by approximately 0.38s at 500Hz
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