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Room Mode Calculator

Calculate standing waves and resonance frequencies for your studio or listening room.

Room length (L)m
Room width (W)m
Room height (H)m
Room volume
52 m³
Schroeder (f_s)
~175 Hz
Lowest mode
34.3 Hz
Total modes (<250Hz)
122
Mode spectrum · log frequency · stem height ≈ relative energy
Axial Tangential Oblique Cluster

6 dense clusters (≤5 Hz apart) — overlapping resonances are harder to treat evenly.

Typical seat response

All modes ≤250 Hz · relative dB · speaker ~25% depth, seat at 38% rule

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FrequencyMode (nx, ny, nz)TypeRelative energy
34.3 Hz(1,0,0)axial100% (High)
42.9 Hz(0,1,0)axial100% (High)
54.9 Hz(1,1,0)tangential50% (Medium)
66 Hz(0,0,1)axial100% (High)
68.6 Hz(2,0,0)axial100% (High)
74.3 Hz(1,0,1)tangential50% (Medium)
78.7 Hz(0,1,1)tangential50% (Medium)
80.9 Hz(2,1,0)tangential50% (Medium)
85.8 Hz(0,2,0)axial100% (High)
85.8 Hz(1,1,1)oblique25% (Low)
92.4 Hz(1,2,0)tangential50% (Medium)
95.2 Hz(2,0,1)tangential50% (Medium)
102.9 Hz(3,0,0)axial100% (High)
104.4 Hz(2,1,1)oblique25% (Low)
108.2 Hz(0,2,1)tangential50% (Medium)
109.8 Hz(2,2,0)tangential50% (Medium)
111.5 Hz(3,1,0)tangential50% (Medium)
113.5 Hz(1,2,1)oblique25% (Low)
122.2 Hz(3,0,1)tangential50% (Medium)
128.1 Hz(2,2,1)oblique25% (Low)
128.6 Hz(0,3,0)axial100% (High)
129.5 Hz(3,1,1)oblique25% (Low)
131.9 Hz(0,0,2)axial100% (High)
133.1 Hz(1,3,0)tangential50% (Medium)
133.9 Hz(3,2,0)tangential50% (Medium)
136.3 Hz(1,0,2)tangential50% (Medium)
137.2 Hz(4,0,0)axial100% (High)
138.7 Hz(0,1,2)tangential50% (Medium)
142.9 Hz(1,1,2)oblique25% (Low)
143.7 Hz(4,1,0)tangential50% (Medium)

What is a Room Mode?

A room mode is a low-frequency standing wave formed when sound reflects between parallel walls. Modes create bass peaks (+12 dB) and nulls (-24 dB) at different spots in your room.

Types of Room Modes

  • Axial Modes (Strongest): Reflect between 2 opposing parallel walls. They create the largest bass peaks and nulls.
  • Tangential Modes (Medium): Reflect off 4 walls. They carry half the energy of axial modes.
  • Oblique Modes (Weakest): Reflect off all 6 surfaces (4 walls + floor + ceiling).

Schroeder Crossover Frequency (fs)(f_s)

The Schroeder frequency (typically 100 Hz to 250 Hz in small rooms) marks the boundary below which room acoustics are dominated by individual standing waves. Belowfsf_s, use thick corner bass traps. Abovefsf_s, use standard acoustic panels.

Solve room modes in 3D

View spatial pressure heatmaps and place corner bass traps in a real 3D model.

Launch 3D Room Solver