1. Select Acoustic Material
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In the "Select Material" menu, choose your desired acoustic material.
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Examples: Fiberglass 703, Rockwool, Acoustic Foam.
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Each material has a specific airflow resistivity, which affects absorption.
2. Set Material Thickness
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In the "Material Thickness (mm)" field, enter the material thickness in millimeters.
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Greater thickness increases low-frequency absorption.
3. Add an Air Gap (Optional)
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In the "Air Gap (mm)" field, enter a value for the air gap between the material and the wall.
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An air gap increases low-frequency absorption without requiring a thicker panel.
4. Calculate and Analyze the Graph
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Click the "Calculate Absorption" button.
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A graph will appear showing absorption across different frequencies (Hz).
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The X-axis represents frequency (from 20 Hz to 2500 Hz).
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The Y-axis shows the absorption coefficient (from 0 to 1).
📌 Example: A 100mm thick Fiberglass 703 panel with a 50mm air gap can reach a coefficient of 0.9 at 500 Hz, meaning 90% absorption at that frequency.