Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
(a) Unweighted and (b) A-weighted 1/3 octave band spectra (in Leq, mean over the whole stimuli length) of the low-frequency (LF), wind turbine (WT) and pink spectral shapes for the situations without periodic and without random amplitude modulation, with a LAeq of 40 dBA. In (a), the mean spectral slopes (dashed lines: regressions of WT and LF Leq on 1/3 octave band) are shown.
