Homework #4

[Hiroko Shiraiwa]

Hi Julius,


> >For me, the definition of x_k[n] seems really funny. You said,
> >x_k[n] = e^j \omega n is just in the special case, T = 1.
> >
> >But if you define it as x_k[n] = e^j \omega nT, the dimension
> >of left side and right side doesn't match. The left side is in
> >"sample space" though the right side is in t-domain, which is
> >converted from sample space using fs.
> 
> It is fine to use any function of n on the right-hand side.

Maybe I was confused.. The equation in problem 1, (x_[n] = ...) 
looks very like IDFT mother function. In this section, which are 
we considering? IDFT or any arbitrary function?

If it is a matter on IDFT, assuming x_k[n] = e^j \omega nT, are 
you discussing the actual frequency but not the normalized 
frequency? (normalized freq. [0 2*pi] and actual freq. [0 2*fs] ?) 

Best,
Hiroko

-- 
Hiroko Shiraiwa <shiraiwa@stanford.edu>