I am a student, i was given a vocal signal of 5000x1 which i need to get it's power spectral density using pwelch function. The frequency of the signal changes over time . So i was told to cut it into 50 segments of 100 points and use the pwelch function on each of these segments.So that at the end i can plot the frequencies i got from every segment as a function of time.
The issue i get is in the syntax , i tried this :
but i get this as a result "In an assignment A(I) = B, the number of elements in B and I must be the same."
I know that the output of the pwelch function are two column vectors of nx1 size.What i want to do is to create 50 elements of nx1,only i dont know how to write it.