Axe work: good vibrations or white noise maker?

摘要

Music has always played an important role in everyday life both as a universal amusement source and the ideal accompaniment for special occasions, like religious and civil ceremonies, battles and deaths. Not all sound are created equal, and in particular it is common experience that high frequency sounds are generally stressing for the human auditory system and are associated with a sense of alarm. On the other side, low frequencies induce a positive sense of excitation and it can be said that "(...) the low pulsing beats are the building blocks on which everything else is built"~1.