A Design Technique for FIR Digital Filters with A Small Number of Taps Suitable for Digital Processing of TV Picture Signals

Abstract

A new design technique for FIR( Finite-duration Impulse Response ) digital filters with a small number of taps was developed. It is suitable for digital processing of TV picture signals and this algorithm is an analytical design method, with, which tap-gain coefficients of FIR filters are obtained by non-iterative calculation. In addition, a minimum stopband attenuation can be reduced within proper values by permitting equi-ripples on the passband without extending the transition width of FIR filters. A method to reduce the level of equi-ripples is also mentioned.