On 5/7/21 4:55 PM, Fred Cisin via cctalk wrote:
Hmmm.? If they ever use single phase, instead of 3
phase, . . .
A4 (A above middle C) is nominally 440Hz, but not everybody agrees.
NY Phil uses 442, Boston uses 441, and many argue for 432.
But, 400 would be A-flat.? With a constant A flat droning in the
background, . . .
I used to play (tuba) just below a fluorescent fixture that buzzed at
120 Hz. Very annoying--a flat B-natural or a sharp B-flat. Messed with
my head.
--Chuck