I'm trying to filter out some nasty noise from an audio recording. It
appears to be periodic from the sound of it - rather like a buzz saw..
Maybe
60Hz and 120Hz components from the look of it.
It seems fairly constant in the background and is more noticeable in quiet
sections. At least it sounds constant enough that subtracting it out
might
be a good strategy. The issue is getting a good replica for that purpose.
So, I thought that an adaptive noise canceller with a big delay in one
side
or a looped source of a quiet section of suitable length as a noise
reference might be a good idea.
Whatever, I don't have a program to do it and I don't have the time to
code
it up from scratch - as I'd be dealing with mistakes, etc. etc.
Suggestions would be appreciated.
Fred
