DS DS/EN ISO 11688-2
DS DSEN SO 11688-2 2002-DEC-19 Acoustcs - Recommended practce for the desgn of low-nose machnery and equpment - Part 2 ntroducton to the physcs of low-nose desgn
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This standard provides the physical background for the low-noise design rules and examples given in Part 1, and supports the use of extensive special literature. It will improve the general understanding of noise control. It may allow comparison of different versions of design but does not cover prediction of absolute noise emission values.