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Machines - Sound Level Reduction

Reducing machines sound level

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Sound levels from machines can be reduced with barriers or enclosures as indicated below:

sound level reduction of machines

Enclosure		Sound 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 isolators	≈ 40 - 45

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