Originally Posted by sithjedi333
Thanks for your advice. Is the shape of the curve I'm looking to emulate the same as the Olive-Wetti target (pink line) in this graph from Rin's blog?
That's the response of the LEAR BD4.2 with the O-W target subtracted from it. So where the graph deviates from zero, the LEAR deviates from the O-W target.
If Rin had the same type of graph for the Piston 2, you'd just be able to dial in the inverse of the graph into your EQ.
Assuming there was no error from Rin and Olive/Welti using a different dummy head.
The actual Olive-Welti target can be found here:
The first graph, black line.
What you want to do is match the raw, uncompensated eardrum-level response (the grey line on the Inner Fidelity graph) to the target response. You do this by subtracting the measured level from the target level at each frequency, e.g.:
at 20 hz: The measured level is -30 dB. The target is about 3 dB. Therefore you get +33dB ( 3 - 33 dB)
Do this for a wide range of frequencies, and you'll end up with something like this: (just an example, the values are made up):
As bigshot said, we want all of these values to be below 0, otherwise we might get clipping at peak levels. So reduce all of your numbers by the highest value, so that it becomes zero and everything else becomes negative. (If you have a preamp slider, you can use that instead to keep levels below 0).
Put those numbers into your EQ.