Would it be possible to create an Audacity plug-in which would automatically modify the equalization of a track so its frequency response closely matched that of another track.
e.g. export spectrum text, (“spectrum.txt” file ), from each track, calculate the differences, then somehow import the difference data to the graphic equalizer and apply it to the track. [or automatically apply the “difference” equalization directly without the “import to graphic equaliser” step].
I was thinking such a plug-in would be useful for continuity purposes.
This idea seems somewhat similar to the “78rpm EQ Curve Generator” project and could be used for that purpose, generically : you wouldn’t need to know the different equalisation settings used by the different record labels. If you have a standard 78 recording and a recording from another 78, the hypothetical “spectrum follower” plug-in could alter the equalization of the latter to match the former.
Crinkle newspapers in front of a very high quality microphone and then crinkle newspapers in front of a crappy microphone – same environment. Apply the difference to an equilization of the crappy microphone.