DTFT Computation Using MATLAB The function fregz can be used to compute the values of the dtft of a sequence described as a rational function in e J in the form of X(e)= p0+p1 ej*…+ PMe JoM 0 +a1e+ Ne voN +d at a prescribed set of discrete frequency points o=@ Copyright C 2001, S K. MitraCopyright © 2001, S. K. Mitra 9 DTFT Computation Using MATLAB • The function freqz can be used to compute the values of the DTFT of a sequence, described as a rational function in in the form of at a prescribed set of discrete frequency points j N N j j M M j j d d e d e p p e p e X e −  −  −  −   + + + + + + = .... .... ( ) 0 1 0 1 =  j e 