@ ebm
"Sounds fills history: Om, the mantra of the universe. Tibetan singing bowls. Tribal chants and drums. Aboriginal digeridoos. Ancient Greeks using vibration to heal. Aristotle’s De Anima written in 350 BC detailed how flute music could arouse strong emotions and purify the soul."
Or, were you referring my attempt at humor about the guys on this forum being able to measure it?