curve fitting tool value in simulink

i have a smoothing spline value in curve fitting

how can i send this diagram in simulink as a source ?

( in fourier diagram should put Coefficients as sine wave with sum)

[Walter Roberson]

A spline is a piecewise polynomial. Are you expecting to create a piecewise fourier? If so then piecewise over time or over frequency?

Spline are most often applied to space (or, equivalently, time). Could you confirm that you want to use the spline coefficients to control frequency? Are you sending frequency coefficients to the spline routine?

Is this a one-time transfer or is this an adaptive filter?