And as the spectrum of a discrete time signal, this identical spectrum will periodically repeat if we prolonged the frequency higher beyond $f_s$ these kinds of which the spectrum shown is also precisely the same spectrum in each and every frequency band from $nf_s$ to $(n+one)f_s$ for almost any integer https://3bhkflatrentingurugram.blogspot.com/2025/07/book-spacious-boys-pg-in-sector-15-part.html