According to the results obtained for Area 2, the joint multifractal
spectrum shows a positive high correlation between the scaling exponents
of the total noise levels recorded in this zone and the SW/H
ratio. It can be seen in Fig. 7 that higher levels of total noise pollution
are associated with street widths greater than building heights and vice
versa. An accumulation of points in both tails of the joint multifractal
spectrum shown in Fig. 7 can be observed; meaning that, according to
its right part, there is a positive and high correlation between total noise
pollution levels and high SW/H ratios. Nevertheless, the opposite situation
occurred in the left site, and it was found that low total noise pollution
values were related to low SW/H ratios. If the joint multifractal spectra
for Area 1 and Area 2 are compared, it can be seen that Area 2 exhibits a
higher positive correlation between the measures than Area 1. This fact
is a consequence of Area 2 joint multifractal spectrum being narrower
than Area 1 spectrum with more points clustered. This circumstance is related
to the urban morphology since Area 1 has an irregular morphology
with a higher coefficient of variation of block sizes, street width and total
noise pollution values