And As the spectrum of the discrete time signal, this similar spectrum will periodically repeat if we extended the frequency bigger beyond $f_s$ these types of which the spectrum proven can also be exactly the same spectrum in every frequency band from $nf_s$ to $(n+1)f_s$ for just about any integer https://pgforboysingurgaon.poetry.blog/2025/07/29/find-the-best-boys-pg-in-sector-15-gurgaon-live-near-college/