pythonscipysignal-processing
How to find the Coefficients of each Cosine term that makes up a discrete signal?
I have a discrete sequence of N real values. Is there a way to find a list of N-1 real numbers x[n] so that this:
with the nth coefficient is x[n], and each element in my original list is y[k], with k representing the index of the element in the list, starting from k=0, is true?
Solution
I believe you are looking for a discrete cosine transform of Type III, as shown here or its inverse.
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