Re: FM modulation of a sqarewave carrier with sinusoidal message in gnu-octave

[Kavya Manohar]

A very similar question was recently asked.  The problem is

that when you change the frequency, you are going all the way
back to the beginning and changing it starting at time zero,
which causes very large phase shifts at the point you are
calculating.

You need to change the frequency starting at the phase angle
of the previous point, so there aren't any sudden phase shifts.
If you do this by calculating the phase change since the last
point it is easier.

This explanation really helped. Thanks.

 

Kavya.