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Sabine reverberation estimate
Estimate a room’s 60 dB decay time from volume and equivalent absorption area.
Room volume (m³): 1–1000000; Equivalent absorption area (m² sabin): 0.1–1000000
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Sabine reverberation estimate
Room volume (m³): 1000 Equivalent absorption area (m² sabin): 200
- Estimated RT60 (s)
- 0.805000
RT60 = 0.161 V/A, using cubic metres and equivalent absorption area in square metres for one frequency band and occupancy condition. A is the sum of surface area × absorption coefficient plus equivalent object absorption, not floor area or absorber panel area. This simplified Sabine model assumes a diffuse field with fairly uniform, low average absorption; it excludes air absorption. Small rooms, strong modes, highly absorptive or coupled spaces can depart substantially. No target, treatment prescription or measured RT60 is supplied. Record the frequency band and occupancy with your export; measure the actual room.
Methodology
How it works
RT60 = 0.161 V/A, using cubic metres and equivalent absorption area in square metres for one frequency band and occupancy condition. A is the sum of surface area × absorption coefficient plus equivalent object absorption, not floor area or absorber panel area. This simplified Sabine model assumes a diffuse field with fairly uniform, low average absorption; it excludes air absorption. Small rooms, strong modes, highly absorptive or coupled spaces can depart substantially. No target, treatment prescription or measured RT60 is supplied. Record the frequency band and occupancy with your export; measure the actual room.
Method and assumptions documented by Techrider.live
2026-10-24
Frequently asked questions
Can I enter the floor area as absorption?
No. Use equivalent absorption for the same frequency band and occupancy, calculated from reliable material data. The example 1000 m³ and 200 m² sabin gives 0.805 s; it is not a venue recommendation.