Acoustics. Declaration and verification of noise emission values of machinery and equipment
Acoustics. Declaration and verification of noise emission values of machinery and equipment
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1 Scope This International Standard
— gives information on the declaration of noise emission values,
— describes acoustical and product information to be presented in technical documents for the purposes of noise emission declaration, and
— specifies a method for verifying the noise emission declaration.
It is applicable to machinery and equipment. The values to be used for the purposes of noise emission declaration are either declared single-number noise emission values, L d , or declared dual-number noise emission values, L and K. L is a noise emission value determined directly from measurements and K is the uncertainty associated with those measurements. L d is the sum of L and K and represents an upper limit which values from repeated measurements are unlikely to exceed at a given confidence level; L d corresponds to the stated or labelled value, L c , defined in ISO 7574‑1. The two forms of noise declaration are alternative means of representing any or all of the A-weighted sound power level, L w A , the A-weighted emission sound pressure level at specified positions, L p A and the C-weighted peak emission sound pressure level at specified positions, L p C,peak . The choice ...
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