Relatorio processamento digital

UNIVERSIDADE FEDERAL DE ITAJUBÁ
CAMPUS ITABIRA

Disciplina: Processamento Digital de Sinas

Relatório IV

Atividade numero 1
Calcule a transformada inversa dos Z
Função Utilizada : x = 0.5.*(1).^n -0.5.*(1/3).^n x = poly ([-0.9 -0.9 0.9]) b = [1]
[R p C] = residuez(b,x)
>> b = [2 3];
>> a=[1 -1 0.75];
>> [R, p, C] = residuez(b, a)
>> [delta, n] = impseq(0,0,19) k = filter(b,a,delta)

x =1/2 - (1/3)^n/2

x = 1.0000 0.9000 -0.8100 -0.7290

b = 1

R = 0.2500 0.2500 - 0.0000i 0.5000 + 0.0000i

p = 0.9000 -0.9000 + 0.0000i -0.9000 - 0.0000i

C = []

R = 1.0000 - 2.8284i 1.0000 + 2.8284i

p = 0.5000 + 0.7071i 0.5000 - 0.7071i

C = [] delta = Columns 1 through 8 1 0 0 0 0 0 0 0 Columns 9 through 16 0 0 0 0 0 0 0 0 Columns 17 through 20 0 0 0 0

n = Columns 1 through 8 0 1 2 3 4 5 6 7 Columns 9 through 16 8 9 10 11 12 13 14 15 Columns 17 through 20 16 17 18 19

k = Columns 1 through 5 2.0000 5.0000 3.5000 -0.2500 -2.8750 Columns 6 through 10 -2.6875 -0.5313 1.4844 1.8828 0.7695 Columns 11 through 15 -0.6426 -1.2197 -0.7378 0.1770 0.7303 Columns 16 through 20 0.5976 0.0498 -0.3984 -0.4357 -0.1370

Atividade numero 2
Função Utilizada :
>> [delta, n] = impseq(0,0,19); b = [2 3]; a=[1 -1 0.75]; filter(b,a,delta); Columns 1 through 9 2.0000 5.0000 3.5000 -0.2500 -2.8750 -2.6875 -0.5313 1.4844 1.8828 Columns 10 through 18 0.7695 -0.6426 -1.2197 -0.7378 0.1770 0.7303 0.5976 0.0498 -0.3984 Columns 19 through 20 -0.4357