// multi-utility computation suite · offline · instant · precise
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│ [c] calcalyst_ │
│ computation suite │
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sci.critical-distance-room Calculator
Calculates the critical distance r_c in a room where direct and reverberant sound fields are equal: r_c = 0.14√(QR), where Q is source directivity and R is room constant. Beyond r_c, reverberant field dominates — adding absorption increases r_c and improves speech intelligibility in large rooms.
Inputs
Q Directivity
Reference formula or conversion factor shown for context.
Rt60 S
Duration of the process. Make sure units match the rate inputs (seconds, minutes, or hours).
V M3
Three-dimensional space occupied (m³ or L). 1 m³ = 1,000 L.
Results
critical distance Dc (m)
The computed distance or separation.
Dc² (m²)
Reference formula or conversion factor shown for context.
Dc = 0.057·√(Q·V/RT60)
Reference formula or conversion factor shown for context.
directivity Q
Reference formula or conversion factor shown for context.
microphone placement
pH of the solution. Below 7: acidic. 7: neutral. Above 7: basic (alkaline).