Plasterboard (Gypsum Board) Acoustic Properties \u2014 Absorption Coefficients (125Hz\u20134kHz)
Standard plasterboard on timber or metal stud framing. Low absorption at most frequencies but provides some low-frequency absorption through panel resonance, especially when mounted on resilient channels.
Absorption Coefficients by Octave Band
| Frequency (Hz) | 125 | 250 | 500 | 1000 | 2000 | 4000 |
|---|---|---|---|---|---|---|
| α (absorption) | 0.15 | 0.10 | 0.06 | 0.04 | 0.04 | 0.05 |
RT60 Impact
Plasterboard walls are highly reflective. Replacing 15m² with acoustic panels can reduce RT60 by 0.3-0.5s
Manufacturers & Brands
Frequently Asked Questions
What is the NRC of Plasterboard (Gypsum Board)?
Plasterboard (Gypsum Board) 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 Plasterboard (Gypsum Board) typically used?
Plasterboard (Gypsum Board) is typically used as a wall and ceiling treatment. Standard plasterboard on timber or metal stud framing.
How much does Plasterboard (Gypsum Board) reduce RT60?
Plasterboard walls are highly reflective. Replacing 15m² with acoustic panels can reduce RT60 by 0.3-0.5s
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