Noise from Machines - Enclosures and Sound Pressure Level Reductions
The noise levels from machines can be reduced with barriers or enclosures as indicated below:
| Type of 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 |
Related Topics
• Acoustics
Room acoustics and acoustic properties. decibel A, B and C calculations. Noise Rating (NR) curves. Sound transmission through walls. Calculate sound pressure, sound intensity and sound attenuation.
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