Abstract
A number of typical noise sources from urban environments were recorded.
Based on spectral analysis, several characteristic frequencies which
involved high subjective annoyance were selected according to the
relative subjective annoyance of pure tones with different frequencies
at equal loudness levels. Pure tones with characteristic frequencies
were synthesized into a series of noise samples. A paired comparison
test was used for comparison of the subjective annoyance due to actual
noise and synthesized noise. The results suggest that the sound energy
distribution of actual noise at different frequency bands should
be considered in order to simulate the subjective annoyance induced
by actual noise with composite noise more accurately. Composite noise
should be combined with pure tones which induced high subjective
annoyance and are located in frequency bands with the majority of
sound energy, provided that the relative Sound Pressure Level (SPL)
differences among the characteristic frequencies of actual noise
were retained.
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