... ∆⁄bDu()hCx()bDp() bCK–()…bC0()…bCK(),,,, 0 … 0,, ,=0 pP1–≤≤ bDp()hCx()FOURIER TRANSFORM FILTERING231(9.4-6)The next step in the discrete Fourier ... discretebDp() yx()hCx()δxp∆–()=bDp()bDu()1P bDp()2πipu–P expp 1=P 1–∑=0 uP1–≤≤hCω()bDu()bDu()14 Pπ2 iπ L 1–()–P exp hC2πuP∆ =bDPu–()b*Du()=bCω()...