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AC_8675309
on Dec 15, 2023
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An interactive guide to the Fourier transform (201...
It is a least squares fit of sine waves. (A^T)A = I because sines are orthogonal.
Use Euler's eqn to convert e^jw into sin + cos and just work through the algebra.
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Use Euler's eqn to convert e^jw into sin + cos and just work through the algebra.