Membrane Absorber (Panel Absorber) Acoustic Properties \u2014 Absorption Coefficients (125Hz\u20134kHz)
Non-perforated panel (plywood, MDF, or sheet steel) mounted over a sealed air cavity. The panel vibrates at its resonant frequency, converting sound energy to heat. Targets low frequencies (63-250 Hz) without absorbing mid-high frequencies. Used to balance room response in studios and performance spaces.
Absorption Coefficients by Octave Band
| Frequency (Hz) | 125 | 250 | 500 | 1000 | 2000 | 4000 |
|---|---|---|---|---|---|---|
| α (absorption) | 0.45 | 0.35 | 0.25 | 0.18 | 0.15 | 0.12 |
RT60 Impact
A membrane absorber tuned to 125Hz can reduce RT60 at that frequency by 0.15-0.30s per m² in a 100m³ room
Manufacturers & Brands
Frequently Asked Questions
What is the NRC of Membrane Absorber (Panel Absorber)?
Membrane Absorber (Panel Absorber) has an NRC (Noise Reduction Coefficient) of 0.30, calculated as the arithmetic mean of absorption coefficients at 250, 500, 1000, and 2000 Hz per ASTM C423.
Where is Membrane Absorber (Panel Absorber) typically used?
Membrane Absorber (Panel Absorber) is typically used as a wall and ceiling treatment. Non-perforated panel (plywood, MDF, or sheet steel) mounted over a sealed air cavity.
How much does Membrane Absorber (Panel Absorber) reduce RT60?
A membrane absorber tuned to 125Hz can reduce RT60 at that frequency by 0.15-0.30s per m² in a 100m³ room
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