This calculator allows you to analyze:
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Room Modes: Identifies problematic frequencies that can cause volume peaks or cancellations (nulls).
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RT60 (Reverberation Time): Measures the time it takes for sound to decay in a room after the source stops.
1. Enter Room Dimensions
In the "Room Dimensions" section, fill in:
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Length (m)
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Width (m)
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Height (m)
📌 Example: For a 5m x 4m x 3m studio room:
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Length: 5.0
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Width: 4.0
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Height: 3.0
2. Select Surface Materials
Choose the material type for:
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Walls: (e.g., Concrete, Carpet, Acoustic Panel)
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Ceiling: (e.g., Acoustic Panel, Wood)
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Floor: (e.g., Carpet, Wood, Concrete)
The material type affects sound absorption and reverberation time.
3. Calculate Acoustics
Click the "Calculate Acoustics" button to view the results. The calculation will display two tabs:
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Room Modes: Frequencies that can generate resonance.
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RT60 Analysis: Shows the reverberation time across different frequency bands.
4. Interpreting the Results
Room Modes
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Displays critical frequencies between 20 Hz and 500 Hz.
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Indicates the mode type:
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Axial: Reflects off two opposite walls.
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Tangential: Reflects off four surfaces.
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Oblique: Reflects off all six surfaces.
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Also displays node positions, indicating where sound peaks or cancellations occur.
⏱️ RT60 Analysis (Reverberation Time)
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Displays reverberation time per octave band (31.5 Hz to 16 kHz).
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Shows whether the RT60 is:
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✅ Within Ideal Range: Good acoustic control.
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⚠️ Outside Ideal Range: May need acoustic treatment (panels, diffusers, etc.).
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These values are estimates, not absolute truths, and serve as a good starting point for understanding your room.