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Fast DCT Algorithms
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AAN DCT
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Figure TC.3.2.1 Calculation of 8-point DCT using 16-point DFT
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Figure TC.3.2.2 Flow-chart to find the real parts of 16-point DFT
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Figure TC.3.2.3 Flow-chart to restore the original values from the real parts of 16-point IDFT
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| n | constant (n) |
| 0 | 0.3535533905933 |
| 4 | 0.3535533905933 |
| 2 | 0.270598050073 |
| 6 | 0.6532814824385 |
| 5 | 0.4499881115685 |
| 1 | 0.254897789552 |
| 7 | 1.281457723871 |
| 3 | 0.3006724434675 |
Table TC.3.2.1 Constants to multiply the outputs of Figure TC.3.2.3 when explicit values of DCT coefficients are needed.