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Revision as of 06:32, 2 November 2011
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Discrete Fourier Transform
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| Discrete Fourier Transform Pairs and Properties (info) | |
|---|---|
| Definition CT Fourier Transform and its Inverse | |
| Discrete Fourier Transform | $ X [k] = \sum_{n=0}^{N-1} x[n]e^{-j 2\pi \frac{k n}{N}} \, $ |
| Inverse Discrete Fourier Transform | $ \,x [n] = (1/N) \sum_{k=0}^{N-1} X[k] e^{j 2\pi\frac{kn}{N}} \, $ |
| Discrete Fourier Transform Pairs (info) | |||
|---|---|---|---|
| x[n] | $ \longrightarrow $ | $ X[k] $ | |
| name | $ type signal here\ $ | $ type transform here \! \ $ | |
| name | $ type signal here \ $ | $ type transform here $ | |
| Discrete Fourier Transform Properties | |||
|---|---|---|---|
| x[n] | $ \longrightarrow $ | $ X[k] $ | |
| multiplication property | $ x[n]y[n] \ $ | $ write DFT here $ | |
| convolution property | $ x(t)*y(t) \! $ | $ X(f)Y(f) \! $ | |
| time reversal | $ \ x(-t) $ | $ \ X(-f) $ | |
| Other Discrete Fourier Transform Properties | |
|---|---|
| property | $ type math here $ |
