Abstract
The declared noise emission values determined according
to the international standards seem to depend on the
frequency distribution of the machinery and equipment. In
this article the declared values have been estimated in a
new way for a single machine and for a batch of machines.
The confidence intervals of a normal distribution used in
evaluation have been obtained by calculating combined
standard deviation values from standard deviation values
of single frequency bands (given in standards) and 1) the
level information of the measured frequency bands or 2)
measured A- and C-weighted level information. It is shown
that it is possible to find an upper limit for the
confidence interval. The declared values found in this
study are equal to the values based on the common ISO
method.
| Original language | English |
|---|---|
| Pages (from-to) | 1-15 |
| Journal | Applied Acoustics |
| Issue number | 1 |
| Publication status | Published - 1999 |
| MoE publication type | A1 Journal article-refereed |