Noise from Machines - Sound Pressure Level Reductions
Barriers and enclosures to reduce noise sound pressure levels from machines.
The noise levels from machines can be reduced with barriers or enclosures as indicated below:
Enclosure | Sound Pressure Level Reduction (dBA) | |
---|---|---|
1 | No enclosure or barrier, machine alone | 0 |
2 | Machine on vibration isolators | ≈ 2 |
3 | Machine with barrier | ≈ 5 |
4 | Machine in a rigid and sealed enclosure | ≈ 20 - 25 |
5 | Machine in a rigid and sealed enclosure with sound absorption lining on inside walls - machine on vibration mounts | ≈ 40 - 45 |