vault backup: 2025-01-09 18:20:05
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@ -46,3 +46,4 @@ $$\delta_T(t) = \frac{1}{T} \sum_{N=-\infty}^N e^{j \omega_s T Nt} $$
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The spectrum of the sampled signal is also a periodic function of frequency with period $\omega_s$.
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The spectrum of the sampled signal is also a periodic function of frequency with period $\omega_s$.
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![[Pasted image 20250109181319.png]]
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![[Pasted image 20250109181319.png]]
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A lot of times, we need to filter the high frequency stuff out, or else we'll get some issues with aliasing.
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