enter image description here

How do we show $y_0(n) = y_1(n)$ when $h_k[n] = h[n] \cos(\frac{2\pi}{L} k n )$

  • $\begingroup$ hk(n) = h0(n)cos(2pikn/L)* $\endgroup$
    – user52384
    Sep 23, 2020 at 5:30
  • $\begingroup$ Hi!. Homework? Show your work, and where you've been stuck in. Hints: You need to consider i- what happens to the signal spectrum after the expander block, ii- Fourier modulation thorem to describe Hk(z), iii- H0(x) is a lowpass filter of proper bandwidth? $\endgroup$
    – Fat32
    Sep 23, 2020 at 10:49
  • $\begingroup$ H0(n) is a lowpass $\endgroup$
    – user52384
    Sep 23, 2020 at 18:32


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.