And because the spectrum of a discrete time sign, this identical spectrum will periodically repeat if we extended the frequency higher outside of $f_s$ these kinds of that the spectrum shown is also the exact same spectrum in each individual frequency band from $nf_s$ to $(n+1)f_s$ for any integer $n$. https://pgforboysgurgaon.data.blog/2025/07/29/trusted-girls-pg-in-gurgaon-sector-15-with-study-first-environment/