Put the device anywhere on the track where you use the Looper effect (it should be detected).
Use the colored sliders to set levels (from -18 to +6db) for each integer pitch values (-36 -24 -12 =0 +12 +24 +36).
Once levels are set, a curve DB LEVEL = F(PITCH) is calculated. It will interpolate level adjustement (especially useful for continuous pitch variations when using pitch knob instead of arrows). The interpolation returns Yi_db. To convert this db value to a linear value to control the mixer we modelize the response with a polynomial : Yi_linear is calculated with a polynomial P. In order to improve CPU usage we chose a 2nd-degree polynomial. To summarize : 1— we define F behaviour with settings 2— F interpolation returns a db value in function of pitch 3— this value is converted into linear value that controls the mixer object. Due to errors the resulting Yi_db is ±0.5 db compared to the expected value.
Click to quick re-ajust the mixer level to the db value chosen for the =0 pitch.
Xn = Pitch [-36 +36]
Yn = Level [-18 +6] db
(Xn,Yn) → F
X = continuous Pitch [-36. +36.]
Yi_db = F(X)
Yi_linear = P(Yi_db)
Yi_linear → Mixer object