And as the spectrum of the discrete time sign, this same spectrum will periodically repeat if we prolonged the frequency better past $f_s$ these that the spectrum shown is also the exact same spectrum in just about every frequency band from $nf_s$ to $(n+one)f_s$ for almost any integer $n$. one. https://pginsector15gurugram.blogspot.com/2025/07/affordable-pg-in-gurgaon-for-students.html