Removing Hum (again)

Thanks, this is what I would like to do:

  • determine the parameters (center frequency, filter width) using the first file. I think four filters at 30, 60, 120 and 180Hz should be sufficient
  • define four presets using these parameters
  • define a macro that runs the four presets

The problem is that I have no idea how to define the presets for the spectral multi edit tool.
Maybe @steve has some hints?