Thanks for explainingThe "sound" of a headphone is its deviation from neutral and this in AutoEq can be seen in the red error curve. Sound signature picks up the error data from CSV and adds that to the compensation. So you use the headphones you have as input, the headphones you wish to imitate as sound signature and use a normal compensation (Harman target). The bass needs to match whatever was in the results of the headphone you're simulating. This scheme allows you to simulate headphones measured on a different rig, although the usual disclaimer of rigs aren't compatible and you can transform measurements made with one to another still apply. If both measurements have been made with compatible rigs, then you could simply use these headphone you wish to imitate as the compensation.
For the graphs that are generated, is the "equalized" graph for when the convolution filter is applied or for when the parametric eq is applied?
I'd expect differing accuracy between those two. (And for fixed eq I'd expect even more deviation from the target graph)
From my tries till now the eq graph nearly always perfectly matches the target graph.(until the treble region)I guess this is only reachable with the convolution filter.