Transformada de Fourier Discreta - Resolucao de Exercicios

b H2ejw 1 w1 wc w2 w1 wc 0 caso contrário H2ejw H1ejww1 h2n ejw1m h2m ejw1m sinwcm jm Questão 3 a x 1 sqrt2 1 0T Xk from m0 to 3 xm W4mk x0W40 x1W4k x2W42k x3W43k 1 sqrt2 ej 32 π k 1 ej π k X0 1 sqrt2 1 2 sqrt2 X1 1 sqrt2j 1 sqrt2 j X 2 sqrt2 sqrt2 j 2 sqrt2 sqrt2 j X2 1 sqrt22 1 2 sqrt2 X3 1 sqrt2 j 1 sqrt2 j b yn W42m xm Yk Xk 2 Y 2 sqrt2 sqrt2 j 2 sqrt2 sqrt2 j