Integração das equações diferenciais do filtro digital de Butterworth mediante algoritmo de quadratura numérica de ordem elevada / Integration of the Butterworth digital filter’s differential equations using numerical algorithm of high order integrator

AUTOR(ES)

Celso de Carvalho Noronha Neto

DATA DE PUBLICAÇÃO

2003

RESUMO

In this work is presented the development of hermitian algorithm for integration of the Butterworth digital filter’s differential equations by means of high order numerical one step operators. The Butterworth filter’s theory is presented based on the Fourier transform. Numerical examples show that the results of the developed hermitian algorithm are more accurate than the usual methods present in the specialized literature, as expected

ASSUNTO(S)

digital filter numerical solution of differential equations signal processing butterworth hermitiano processamento de sinais butterworth filtro digital solução numérica de equações diferenciais hermitian

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