It is important to study measuring time length of
LAeq in urban noise survey.
Environmental noise measurements were made to examine the relations between measuring time length and amount of deviation in
LAeq, and the relation between
LAeq and
Lx.
The result show that
1) deviation in
LAeq is not improved if the measurement is made over 10minites.
2)
LAeq is accurately estimated from existing data of
Lx with the aid of a certain equation.
It is concluded that the ordinary methods for
L50 is applicable to
LAeq measurements in environmental noise servay.
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