Matlab code of image

Hello, could you assist me in creating this figure in MATLAB?

[Dyuman Joshi]

What have you tried yet?

What are the inputs?

[DGM]

Are you actually trying to generate a 2D spectrogram image?

Or are you trying to create the 1D signal that the image represents?

[rosee]

I want to create a one-dimensional signal.

[DGM]

Well it's been over a decade since I touched signals calc, but it's obviously a cosine sweep. Your spectrogram looks like

w = 3; % just a guess
t = linspace(0,w,1000);
f = linspace(0,w,1000).';
s = cos(2*pi*f.*t);
pcolor(t,f,s)
shading flat

So maybe you could start with that and work back to time domain.

[rosee]

Thank you, I think this is the real part of DFT Matrix.