I want to compute FFT of each segments from a 102400 length signal, where I consider the length of segment is 1024. Than store the amplitude and freq n separate array

I want to compute FFT of each segments from a 102400 length signal, where I consider the length of segment is 1024. Than store the amplitude and freq n separate array?

Data file is attached and store in v1.

I tried the below code :

requiredArray = [];
meanRequiredArray = [];
sum = 0;
count = 1;
for k = v1
    requiredArray = [requiredArray, k];
    disp(requiredArray);
    
    if numel(requiredArray) == 3
        meanRequiredArray = [meanRequiredArray, (abs(fft(requiredArray)))];
        requiredArray = [];
    end
    
    disp(numel(requiredArray));
    
end
SA= meanRequiredArray';

[Matt J]

I want to compute FFT of each segments from a 102400 length signal, where I consider the length of segment is 1024.

Your attached .mat files do not contain data fitting that description. Here are their current contents:

Than store the amplitude and freq n separate array?

What is "freq"? Do you mean amplitude and phase?

[Rajeev Kumar]

Yes... stored Phase in seperate array

[Matt J]

Then I think I have given you a valid answer below.

Answer 1

[Matt J]

F=fft( reshape(input,1024,[])  ,[],1);

amplitude=abs(F);
phase=angle(F);