On Thu, 2015-10-01 at 12:59 +0200, I wrote:
> Balance, harmony would be A=0Hz, OTOH our
speakers burn at 0Hz, it's
> not very harmonic from their point of view.
Actually "silence" not necessarily is a DC offset ;), but silence is
silence, it's just a part of music, silence alone isn't music, even not
for a John Cage composition.