INTEL 8086 MICROPROCESSOR BASED DIGITAL FILTER REALIZATION

Abstract

Digital filtering is a major subdivision of Digital signal processing. The, practical realizations of a Digital filter have been discussed in this disser-tation. To avoid coefficient sensitivity problems, the Z Transfer function of 8. Digital filter is implemented as a cascaded or parallel combination of' second order modules. Bah module in itself can be one of the four Direct structures. The significant brea4-through in the area of IC technology have opened up new options for the imple-mentation of Digital filters, The present day research is centred around the microprocessor based design of a Digital filter. Digital filters are now implemented making use of 16-bit word length microprocessors. Intel 8086 has been considered in this dissertation. The Assembly language of 8086 is used to implement all the Digital filter modules. The software programs are given for k'th order Digital filter using N second order modules in cascade. It has also been shown that the same sub-routines developed for second order modules can bo: used for parallel structure implementation.