Despite my unfamiliarity with LISP, (I now know why they named it after a speech impediment 
),
and this being my first attempt at a plug-in, my Dehummer does exactly what is says on the tin :
here is a link to a before and after example (mp3) ā¦ http://www.sendspace.com/file/nxvejc
I did try reducing the number of loops, to the first 100 harmonics (5KHz), but I could still clearly hear the high frequency harmonics of the mains hum, so unfortunately the 480 loops (at 48000 sample rate) are necessary. (Iām in the UK these numbers relate to 50Hz mains).
Thank you for the tips on Nyquist stereo, I will try make dehummer 2.0 a stereo version.
Mains dehummer 2-0.zip (658 Bytes)