t) x(nI, n) XI(ko, no) X2(ko, k1) X(k) =x(0,0)一 X2(0,0)=X(0) =x(0,1) X2(0,2)=X(8) F=x(0,2) X2(0,1)=X(4) °。X20.3)=X(12) (1,0) X2(2,0)=X(2) 千→0X(2.2)X(10 (1,2) 2(2,1)=Y(6 (1,3) X2(2,3)=X(14) N(83=x(2,0)→d →。X2(1,0)=X(1) 9)=x(2,1) X2(1,2)=X(9) (1=x(2,2) X2(1,1)=X(5) 11)=x(2,3 X2(1,3)=X(13) 12)=x(3,0) X2(3,0)=X(3) x(13)=x(3,1) X2(3,2)=X(11) (14)=x(3,2) X2(3,1)=X(7) x(15)=x(3,3) X2(3,3)=X(15) 图4-22按时间抽选基-4FFT流图