Applying phase selection on chirp

hello,

I am trying to create a swept-frequency cosine, and I want to be able to set the phase as I please. I tried that code, but I get an error. I want to create a vector mat(1:40), where I can manually set its phase.

 Fs = 32000;                %Sampling Frequency 
 t = 0: 1/Fs: 10 -1/Fs;     %Time 
 tt = 10;                   %Time when the chance occurs 
 f1 = 20;                   %Starting Frequency 
 f2 = 250;                  %Ending Frequency 
 cosineph = zeros(1,40);    %Phase of sines

 for iMat= 1:40

    k=iMat/2;   
    mat(iMat) = chirp(t,k*f1,tt,k*f2,'linear',cosineph(iMat)); 

 end

The error that I am getting is " In an assignment A(I) = B, the number of elements in B and I must be the same."

Now, I am guessing it refers to variable t, so I tried implementing that into an embedded for, but didn't get the results I wanted.

Any advice?

Thanks

Answer 1

[tony karamp]

it seems that the way to go is to replace the vector, with a cell. So the code alters like that:

 for iMat= 1:40

    k=iMat/2;   
    mat{iMat} = chirp(t,k*f1,tt,k*f2,'linear',cosineph(iMat)); 

 end