And Because the spectrum of the discrete time sign, this identical spectrum will periodically repeat if we prolonged the frequency increased past $f_s$ this kind of that the spectrum proven can be the exact same spectrum in just about every frequency band from $nf_s$ to $(n+1)f_s$ for almost any integer https://girlspgingurgaonsector15.car.blog/2025/07/29/trusted-girls-pg-in-gurgaon-sector-15-with-study-first-environment/