Unformatted text preview: 6.  Consider the CT signal x ( t ) = rect( t A ), where t is in units of seconds and A = 7. (a) Analytically determine the FT of this signal and plot in Matlab. (b) Sample x ( t ) with a sampling period T = 1. Determine, analytically or numerically, the DTFT of the sampled signal and plot in Matlab. (c) Compare the continuous and DT FTs over the frequency range -π to π . (d) Take the result of part (a) and create the spectrum Y (e jω ) = X (e jω )+ X [e j ( ω +2 π ) ]+ X [e j ( ω-2 π ) ]. Plot this spectrum from -π to π and compare with parts (a) and (b). 1...
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- Winter '06
- Digital Signal Processing, CT signal