And as the spectrum of a discrete time signal, this exact same spectrum will periodically repeat if we prolonged the frequency bigger outside of $f_s$ these kinds of which the spectrum shown is also precisely the same spectrum in every frequency band from $nf_s$ to $(n+1)f_s$ for any integer $n$. https://pgingurgaon.code.blog/2025/07/28/find-your-ideal-pg-in-sector-14-gurgaon-with-osmstays/