The Schroeder frequency (f_s ≈ 2000 √(RT60 / V)) defines the transition point in room acoustics. Below f_s, sound behaves modally as discrete standing waves; above f_s, sound behaves as specular rays.
Acoustic Physics Formula
In-Depth Acoustic Principle
Understanding the Schroeder frequency allows room designers to apply pressure-based bass traps below f_s and porous absorbers or diffusers above f_s.
- Schroeder, M. R. (1954). Die statistischen Parameter der Frequenzkurven von Großen Räumen
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