Dear Sirs:
 
I use Audacity 1.2.2 to record and edit voice recordings, and
in general I'm quite satisfied.
 
One difficulty I have is with the noise removal effect:
the more edits I make in order to get rid of the
constant hum of the computer, the more distortion
I get.
 
If I upgrade, would that possibly help?
If so, what numbers do I upgrade to?
 
Thank you,
Sanford Fraser