Axis tune "User curve" formula [question]

[Thömel]

Hello everyone

 

Does anyone know which formula ED uses to compute the input curves with the "user curve" parameters? It seems to be multiple sine/cosine curves with a period of about 20 but I couldn't figure it out so far.

Any help is appreciated, thank you.

 

Edit.: My closest guess so far is something like:

y=(a*((np.sin((np.pi)/(15)*x))/(x))**(2)+
   b*((np.sin((np.pi)/(15)*(x-10)))/(x-10))**(2)+
   c*((np.sin((np.pi)/(15)*(x-20)))/(x-20))**(2)+
   d*((np.sin((np.pi)/(15)*(x-30)))/(x-30))**(2)+
   e*((np.sin((np.pi)/(15)*(x-40)))/(x-40))**(2)+
   f*((np.sin((np.pi)/(15)*(x-50)))/(x-50))**(2)+
   g*((np.sin((np.pi)/(15)*(x-60)))/(x-60))**(2)+
   h*((np.sin((np.pi)/(15)*(x-70)))/(x-70))**(2)+
   i*((np.sin((np.pi)/(15)*(x-80)))/(x-80))**(2)+
   j*((np.sin((np.pi)/(15)*(x-90)))/(x-90))**(2)+
   k*((np.sin((np.pi)/(15)*(x-100)))/(x-100))**(2))\
  *12.6

 

where a to l are the user curve parameters

Edited March 28, 2021 by Thömel