Lecture 27
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✗(p) = YCP) + WNPZCP) 0£ P E N/z – I
FFT (radix 2)
Derivation relating ✗(P) to YCP) and 2-(p) :
(✗(2k) Wμ”P+ ✗(21<+1)
L Wμ e-I2%
+ WNP 2-(K)
Wwi? t.NO/+E:wiiiEe-i#iaKP=e-=i2%a1KP---wiii
Z C K )WKP
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