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Article · Современные проблемы науки и образования · January 1, 2012

Особенности реализации цифровой фильтрации с изменением частоты дискретизации

Dmitrii Kaplun, С. Н. Ежов

Abstract

This paper describes a new method for design digital filters. This technique presents possibility of cascade of filters of random order with Finite Impulse Response (FIR) implemented with the reduced value of computing expenses. Synthesized cascade filters have standard structure components and any order filters provide wide dynamic range of processing data, and also have high computational efficiency and increase of the computation speed. The varying sample rate has a great influence on quantity of synthesized filter operations. As a result methods of synthesis filters with decimation with optimal parameters are given. Recommendations about a choice of the best technique of synthesis of filters with varying sample rate are made. It is given an example receiving cascade of non-recursive lowpass digital filter for the implementation of narrow-band filtering. Necessary recommendations about designing of non-recursive digital filters cascade with varying sample rate effective by criterion of a minimum of computing expenses are formulated.

Digital Filter Design and ImplementationAdvanced Adaptive Filtering TechniquesAnalog and Mixed-Signal Circuit Designdigital filter designvariable sampling ratedecimation

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