Reverberation Time
The Sound Reverberation Time indicates how long it takes until the sound pressure level in a room is decreased with 60 dB
Sponsored Links
The Reverberation Time - Ta - for a room is the time it takes before the sound pressure level has decreased with 60 dB after the sound source is terminated.
The Reverberation Time - Ta - can be expressed as:
- Mean sound absorption coefficient αm <= 0.35:
Ta = 0.16 V / A (1)
where
Ta = reverberation time (s)
V = room volume (m3)
A = the sound absorption of the room (m2 sabin)
Ta = 0.16 V / [ (A / αm) ln( 1/(1-αm ) ) ] (2)
Note! The sound absorption of the room - A - varies with the frequency, and so do the reverberation time - Ta.
Recommended Sound Reverberation Time for some typical Rooms
| Room Volume (m3) | Recommended Reverberation Time - Ta - (s) | ||
| Conference room, school, cinema | Concert Hall, Normal Music | Church, Organ Music | |
| 10,000 | 1.0 | 1.5 | 2.0 |
| 1,000 | 0.8 | 1.3 | 1.6 |
| 100 | 0.6 | 1.1 | 1.2 |
Sponsored Links
Sponsored Links
SketchUp Engineering ToolBox - Online 3D modeling!
Free SketchUp Engineering ToolBox - enabled for use with the amazing, fun and free Google SketchUp.
Search the ToolBox
© The Engineering ToolBox 2005
8 6 27
