well there was a experiment on mystbuster way back in time and they figured constand speed metal music would work. but first: this kind of music draws cops in like rats (what a strange & true metaphor I used there
) and second: mystbuster is not a show that should be seen as scientifically founded in any way, they just screw up one most of their experiments from the start on right away till the end
pure entertainment and nothing more than that
so probably, a fan makes noise and you need a fan in a indoor grow anyways, guess the end to this
peace