Wiley signals and systems e book TLFe BO 307

a) Is t h e sigiral a high-pass, real? ;I low-pass, or a btliid-pass slgrlitl? Is it ronqlex or h) Is rri1,ic;tl sarnpling possible'! c ) I)raw the spectnmi X , ( j w ) o€the sarriplcd signal lor T , = $.Tz - r, = 0.2 x 8ancl Wli ie') Exercise 11.22 Show that the irnpulsc response of the ideal iriterpolalioii filler for ciitically sampled real banti-pass sigrials (11.44) 1)ecornesthe 1ow-p.a~~ case (1 1.35) for " ~ ' ( 1T Exercise 11.23 A signal ~ ( t )band-limited , to f , = '20 IrHz is vritically sampled at, f r c y ~ ~ f(, ~~cy The non-ideal proprrties of t h sampling ~ are represerrted by the apertme f L i n C t i o K i t 13.- for -r