# Term for signal waveform correction or demodulation

Let say a periodic signal waveform $$v(t)$$ can be modeled as:

$$v(t) = f(\phi) A \sin(2\pi ft + \psi)$$

where $$A$$ is a constant amplitude, $$f$$ is signal frequency, $$t$$ is time and $$\psi$$ is a constant phase.

While $$f(\phi)$$ is $$f = k \cos(\phi)$$, where $$k$$ is a constant and $$\phi$$ is a function of time $$t$$.

Now the signal $$v(t)$$ is corrected by removing the dependency to $$\phi$$ factor i.e. $$v'(t) = v(t)/f(\phi)$$.

My question: is the process getting $$v'(t)$$ from $$v(t)$$ considered signal waveform demodulation ? or undistortion ?

The generic term I can think safely would be signal waveform correction but it would be better if there is a precise terminology.

• To clarify here, the division is done after finding the $f(\phi)$ so in a way is point by point division. It is ok for me to use the term restoration. – Karsun Apr 8 '19 at 1:28