Fig. 1From: Discriminative frequency filter banks learning with neural networksNon-uniform filter banks. The terms Hk(z) and Rk(z) correspond to the z-transforms of the kth filter and dual filter, i.e., \(\protect \phantom {\dot {i}\!}H_{k}(z)=z^{-l_{k}}\) for some integers lk and \(\protect \phantom {\dot {i}\!}R_{k}(z)=z^{l_{k}}\)Back to article page