And because the spectrum of a discrete time signal, this exact same spectrum will periodically repeat if we extended the frequency bigger further than $f_s$ such which the spectrum shown can be the identical spectrum in just about every frequency band from $nf_s$ to $(n+1)f_s$ for virtually any integer $n$. https://boyspggurgaonsector15.family.blog/2025/07/28/find-your-ideal-pg-in-sector-14-gurgaon-with-osmstays/