And because the spectrum of a discrete time sign, this same spectrum will periodically repeat if we extended the frequency bigger over and above $f_s$ these the spectrum shown is usually a similar spectrum in just about every frequency band from $nf_s$ to $(n+1)f_s$ for virtually any integer $n$. Gurugram https://boyspgingurgaonsector15kirtinagar.blogspot.com/2025/07/book-spacious-boys-pg-in-sector-15-part.html