3.1 How to Specify a Filter3.2 Moving-Average Filters3.3 Infinite Sequence Generation3.4 Unity-Gain Narrowband Filter3.5 All-Pass Filter3.6 Notch Filter3.7 Other Autoregressive Filters3.8 Adaptive Filters3.9 Demodulating via Adaptive Filters3.10 Phase Shift via Adaptive Filter3.11 Inverse Problems3.12 Kalman Filter3.13 SummaryReferences