An Orthonormal Sinusoidal Set

GUIDE: Mathematics of the Discrete Fourier Transform (DFT). An Orthonormal Sinusoidal Set

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An Orthonormal Sinusoidal Set

We can normalize the DFT sinusoids to obtain an orthonormal set:

\

The orthonormal sinusoidal basis signals satisfy

\

We call these the normalized DFT sinusoids.

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