
Filtros Digitais
Authored by Fernanda Silva
Specialty
University
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14 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A função de transferencia de um filtro cuja a equação diferença é igual a: y(n)= x(n)-x(n-2) -y(n-1) H(z)=(1-z^-2)/(1-z^-1)
Certo
Errado
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A janela de Blackman pode eliminar o ripple em um filtro FIR. Em troca de:
largura da banda de transição mais larga
largura na banda de transição mais estreita
resposta de fase não linear
possível instabilidade
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
A respeito de filtros digitais, julgue os próximos itens.
A função de transferencia dos filtros digitais com polos localizados em z=3 e z=2 e zeros em z=3 é:
H(z)=(z-1-3z-2)/(1-2z-1+z-2)
Certo
Errado
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A resposta de magnitude do filtro a seguir diminui monotonicamente à medida que a frequência aumenta
Butterworth
Chebyshev tipo I
Chebyshev tipo II
FIR
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Filtro FIR tem ______ , e um filtro IIR tem____
zeros e polos--- zeros
zeros--- zeros e polos
zeros---zeros
polos---zeros
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Na janela retangular, lobulo lateral terá _______ dB de pico
13
11
12
14
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nem a resposta de impulso nem a resposta de fase do filtro analógico são preservadas no filtro digital no seguinte método
O método de mapeamento de diferenciais
Método invariante por impulso
Transformação bilinear
Técnica de transformação
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