In summary, social/demographical/behavioural factors show more effects on the experienced occurrence of different sounds than preference for individual sounds.
The effect of age is significant on both experienced occurrence of and preference for individual sounds, and could reflect the difference in sound sensitivity.
Length of stay and visit frequency are two related factors and could have more influence on experienced occurrence of individual sounds as well as visual landscape perception than other factors, but their effects on preference for individual sounds are much less.