ANALYSIS OF MATLAB SYSTEM APPLICABILITY FOR SYNTHESIS OF CONTROLLED BUTTERWORTH DIGITAL RECURSIVE IIR FILTERS
Soran Hussein, Игорь Ильич Турулин · Известия Южного федерального университета. Технические науки · 2021
A number of digital signal processing applications use controlled IIR digital recursive filters.The word " controlled " refers to filters whose structure ratios clearly depend on the cut rate orboundary frequencies. Controlled IIR filters can be synthesized using a variety of tools to computetraditional, uncontrolled IIR filters. The article dealt with the synthesis uncontrolled IIR filters andanalyzed the suitability of the presentation of the results of synthesis for the construction of controlledIIR filters. The design techniques based on MATLAB (2021a) and the fundamental concepts of IIRButterworthdigital filters were described and explained. The composited signal was processed by theanalyzed filter to find whether it met the filtering progress criteria. To check the calculated filters, theSimulink prototype was used, as well as FDA tool of signal processing toolbox. Based on the resultsobtained, a conclusion was made about the applicability of the MAT LAB (2021a) system for thesynthesis of controlled digital recursive IIR-Butterworth filters. The analyzed technique was moreefficient, faster, decreased the tasks and found the results are satisfying.