In Figure P10.25, a filter bank is shown for which
h0[n] = 3δ[n + 1] + 2δ[n] + δ[n − 1],
and
The filter bank consists of N filters, modulated by a fraction 1/M of the total frequency band. Assume M and N are both greater than the length of h0[n].
(a) Express yq [n] in terms of the time-dependent Fourier transform X[n, λ) of x[n], and sketch and label explicitly the values for the associated window in the time-dependent Fourier transform. For parts (b) and (c), assume that M = N. Since vq[n] depends on the two integer variables q and n, we alternatively write it as the two-dimensional sequence v[q, n].
(b) For R = 2, describe a procedure to recover x[n] for all values of n if v[q, n] is available for all integer values of q and n.
(c) Will your procedure in (b) work if R = 5? Clearly explain.
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