8.1 CHAPTER OBJECTIVES8.2 INTRODUCTION8.3 WHAT DO WE MEAN BY “FILTERING”?8.4 FILTER SPECIFICATION, DESIGN, AND IMPLEMENTATION8.5 FILTER RESPONSES8.6 NONRECURSIVE FILTER DESIGN8.7 IDEAL RECONSTRUCTION FILTER8.8 FILTERS WITH LINEAR PHASE8.9 FAST ALGORITHMS FOR FILTERING, CONVOLUTION, AND CORRELATION8.10 CHAPTER SUMMARY