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DFT Theorems
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Time / Frequency Properties
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Time / Frequency Properties
The DFT and IDFT
The
Discrete Fourier Transform (DFT)
is given by:
(
1
)
The operation of the DFT can be reversed to recover a time-domain signal from its frequency representation. This is done with the
Inverse Discrete Fourier Transform (IDFT)
.
The IDFT is given by:
(
2
)
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