Enter your room’s length, width and height to find the axial standing-wave frequencies that cause bass peaks and nulls — and where to focus treatment.
Room Mode Calculator
| Mode | Length (Hz) | Width (Hz) | Height (Hz) |
|---|
Axial room modes: f = (343 ÷ 2) × (n ÷ L), using the speed of sound 343 m/s. These standing-wave frequencies cause bass peaks and nulls — modes that cluster close together (within ~5%) are flagged as likely problem regions to treat with bass trapping.
How it works
Axial modes are standing waves between parallel surfaces, found with f = (343 ÷ 2) × (n ÷ dimension) using the speed of sound, 343 m/s. The tool lists the first four orders per dimension and flags frequencies that cluster closely, which tend to be the worst-sounding bass regions to treat with bass trapping.
FAQ
What do I do about problem modes?
Bass trapping in corners, careful speaker and listening-position placement, and avoiding cube-like room ratios all help even out modal bass.
Are axial modes the only ones?
No — tangential and oblique modes also exist, but axial modes are the strongest and the most useful starting point.