And because the spectrum of a discrete time sign, this exact same spectrum will periodically repeat if we extended the frequency better over and above $f_s$ these types of the spectrum shown is also the same spectrum in each frequency band from $nf_s$ to $(n+one)f_s$ for any integer $n$. , https://pgingurgaon.code.blog/2025/07/29/trusted-girls-pg-in-gurgaon-sector-15-with-study-first-environment/