I like to fantasize beyond these things. Isn´t it true that sounds of Nature (audible or not) have an influence in our behavior, emotions and sensibility ? I think each time we take a break and escape from big cities for some days, we experiment an important transformation. For example, I always get asleep when I´m at the beach. Can´t resist the sound of the waves. (Hey! I´ll try a tape record when I go to bed).
Different sounds from different regions could also influence in people´s character. Unconsciously we may have been formed by the natural sounds. I wish I could live in a rain forest near the coast. (And sleep in the beach)
Un abrazo - Andrés