[Arny Krueger]

"Peter Larsen" wrote in
message
Knack wrote:

However, I can definitely hear two distinctly different
noises coming out of this ceiling fan: a low rumbling
sound and a higher pitched sound. Presumably, the former
is due to air turbulence and the latter is from the
electric motor.

Appears reasonable.

Unfortunately the higher pitch sound component is the
more objectionable of the two that I wish to attenuate.

Appears reasonable.

At this point another course of action presents itself - change the fan. The
whine (and even the rumble) might be sample defects, or tjey might be due to
a too-cheap design. I've got a number of fans in my house, and there seems
to be a loose correlation between price and SPL. ;-)

Another option which might become more feasible as the calendar moves
towards winter in the Northern Hemisphere, is simply turning the fan off
during critical recording sessions.