Why a digital signal necessarily has a periodic spectrum

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Reference no: EM131216081

(a) Explain why a digital signal necessarily has a periodic spectrum.

(b) Why must every digital signal - stored over a block length n - be understood as periodic in the time domain over the block length n?

(d) By means of what trick using DASYLab was the frequency domain in Illustration 197 - Illustration 203 expanded to such an extent compared with Illustration 190 - Illustration 196 that the periodicity of the spectra can be recognized.

Reference no: EM131216081

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