Design a two-band QMF filter bank satisfying the following specifications:

\[\begin{aligned}\delta_{\mathrm{p}} & =0.1 \\\delta_{\mathrm{r}} & =0.05 \\\Omega_{\mathrm{p}} & =0.4 \frac{\Omega_{\mathrm{s}}}{2} \\\Omega_{\mathrm{r}} & =0.6 \frac{\Omega_{\mathrm{s}}}{2} \\\Omega_{\mathrm{s}} & =2 \pi \mathrm{rad} / \mathrm{s} .\end{aligned}\]