And because the spectrum of the discrete time sign, this same spectrum will periodically repeat if we extended the frequency bigger further than $f_s$ this sort of which the spectrum revealed can be exactly the same spectrum in each frequency band from $nf_s$ to $(n+one)f_s$ for almost any integer $n$. https://girlspginsector14gurgaon.blogspot.com/2025/07/find-ideal-boys-pg-in-gurgaon-sector-15.html