Practical Design Rules for Optimum Finite Impulse Response Low-Pass Digital Filters

T h e p r o b l e m o f d e s i g n i n g a n o p t i m a l (in t h e m i n i m a x sense) lowpass F I R digital filter to m e e t design specifications h a s been t h o r o u g h l y investigated1-6 a n d m a y be considered to be solved. T h u s , given a * University of Erlangen--Nuremberg, Germany. 769 770 THE BELL SYSTEM TECHNICAL JOURNAL, J U L Y - A U G U S T 1 9 7 3 NORMALIZED FREQUENCY Fig. 1--Definition of low-pass filter parameters.