The Mudcat Café TM
Thread #155388   Message #3655149
Posted By: treewind
30-Aug-14 - 04:53 AM
Thread Name: Tech: Removing hum from old tapes
Subject: RE: Tech: Removing hum from old tapes
This should be a straightforward job for Audacity's noise removal tool, as long as you can get a good sample of the hum by itself, and as long as the hum is constant in level though the recording.

It's more sophisticated than a series of notch filters, which would indeed impair the sound quite badly.

Jonny Sunshine (above) has good advice too.