Generate sine wave with varying phase

Hello, I would like to have 2 sinewaves, the second sine wave should be in phase with the first for half of its total time and must be out of phase by 30° for the rest of the time. Is there a method to generate this?

Thanks in advance.

Answer 1

[Star Strider]

One approach:

t = linspace(0, 2, 500);
f = 10;
s(1,:) = sin(2*pi*f*t/t(end));
s(2,:) = [sin(2*pi*f*t(1:numel(t)/2)/t(end)) sin(2*pi*f*t((numel(t)/2+1):end)/t(end) + 30*pi/180)];

figure
plot(t, s)
grid

Experiment to get the result you want.

And I hope this is not homework.

[A VP]

Perfect! This is exactly what I was looking for. This is not a homework problem! This is a part of a research that I am working on. Thanks!

[Star Strider]

As always, my pleasure!

Good luck with your research!

[A VP]

Thank you!