Capitolul 1: Bancuri de filtre
Capitolul 1: Bancuri de filtre
Capitolul 1: Bancuri de filtre
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PAS cap. 1: <strong>Bancuri</strong> <strong>de</strong> <strong>filtre</strong> – p. 68/75<br />
Funcţii <strong>de</strong> transfer<br />
• Similar cu cazul M = 2, relaţia <strong>de</strong> intrare-ieşire este<br />
˜X(z) =<br />
M−1<br />
∑<br />
i=0<br />
F i (z) 1 R∑<br />
i −1<br />
R i<br />
l=0<br />
H i (zw l R i<br />
)X(zw l R i<br />
)<br />
• Pentru BF uniforme, relaţia <strong>de</strong>vine<br />
˜X(z) = T 0 (z)X(z) + ∑ R−1<br />
l=1 T l(z)X(zw l R ) (15)<br />
• Funcţia <strong>de</strong> transfer <strong>de</strong> distorsie este<br />
T 0 (z) = 1 R<br />
∑ M−1<br />
i=0 H i(z)F i (z) (16)<br />
• Funcţiile <strong>de</strong> transfer <strong>de</strong> aliere sunt<br />
T l (z) = ∑ M−1<br />
i=0 F i(z)H i (zwR l ), l = 1 : R − 1 (17)