Ask Sawal

Discussion Forum
Notification Icon1
Write Answer Icon
Add Question Icon

How to measure rt60 of a room?

3 Answer(s) Available
Answer # 1 #

How is RT60 measured? In order to measure RT60, the room must first be energized with noise. This can be done by popping a balloon or using a dodecahedral speaker or other sound source. A sound level meter with special room acoustics options measures the time for the sound level to decay and reports the result.

[3]
Edit
Query
Report
aucujkjg Hyciek
BASKET FILLER
Answer # 2 #

Depending on the type and purpose of the room you are measuring, various sound sources are suitable.

In accordance with the ISO 3382 and ASTM E2235 standards, many common reverberation time measurements require an omnidirectional sound source, which means that the sound energy has to be distributed uniformly. For precise measurements, the sound source must have an omnidirectional radiation characteristic.

The DS3 Dodecahedron Speaker Kit offers a powerful omnidirectional sound source suitable for most applications, from small to relatively large rooms.

Dodecahedron Speaker Kit

[1]
Edit
Query
Report
Hyder pcecv
STEAM SERVICE INSPECTOR
Answer # 3 #
  • Formula for Sabins: a = Σ S α
  • Where: Σ = sabins (total room absorption at given frequency) S = surface area of material (feet squared) .
  • Sabine Formula: RT60 = 0.049 V/a.
  • Where: RT60 = Reverberation Time.
[0]
Edit
Query
Report
afdbq Salman
AUDITOR COUNTY OR CITY