5.3 Effect of Sampling in the Frequency Domain If r>2 2m,ga(t)can be recovered exactly from gp(t)by passing it through an ideal lowpass filter H(j)with a gain T and a cutoff frequency c greater than m and less than r-m as shown below 8a() H,(02) 8a(0 p(t)§5.3 Effect of Sampling in the Frequency Domain • If ΩT>2 Ωm , ga(t) can be recovered exactly from gp(t) by passing it through an ideal lowpass filter Hr(jΩ) with a gain T and a cutoff frequency Ωc greater than Ωm and less than ΩT - Ωm as shown below