The Science of Sound

Sounds affect us in positive and negative ways. Depending on your upbringing or personal preferences the sound of a Harley Davidson motorcycle either makes you crazy annoyed or crazy happy. No idea why this is, but rarely are humans or most living creatures completely unaffected by sound. 

The vibration and frequency of sound has a lot to do with our responses. For me, low frequency sounds are much more appealing than high pitched frequencies. A french horn sounds a lot more pleasing than an ambulance siren. I'm pretty sure I wouldn't get out of the way as quickly for an emergency french horn. It just doesn't say, "red alert" like a shrill siren does.

Anyway, the above video describes the science of sound in a simple and much better way than I have. Go science!