And because the spectrum of a discrete time signal, this exact same spectrum will periodically repeat if we prolonged the frequency higher over and above $f_s$ these which the spectrum demonstrated can also be the exact same spectrum in every single frequency band from $nf_s$ to $(n+one)f_s$ for just about https://girlspginsector15part2gurugram.blogspot.com/2025/07/book-spacious-boys-pg-in-sector-15-part.html