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Capitolul 1: Bancuri de filtre

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PAS cap. 1: <strong>Bancuri</strong> <strong>de</strong> <strong>filtre</strong> – p. 23/75<br />

BF cu două canale—reprezentare polifază<br />

• Se obţine schema<br />

✓✏<br />

x ✲ ↓2 ✲<br />

❄ ✒✑<br />

z −1 ✓✏<br />

✲ ↓2 ✲<br />

✒✑<br />

A(z)<br />

y 0<br />

y 1<br />

✲<br />

✲<br />

S(z)<br />

✓✏<br />

✲ ↑2<br />

✒✑❄<br />

z −1 ✓✏<br />

✲ ↑2 ✲❄<br />

✒✑<br />

˜x<br />

• Matricea polifază <strong>de</strong> analiză este<br />

[<br />

H 00 (z) H 01 (z)<br />

A(z) =<br />

H 10 (z) H 11 (z)<br />

• Matricea polifază <strong>de</strong> sinteză<br />

[<br />

F 00 (z) F 01 (z)<br />

S(z) =<br />

F 10 (z) F 11 (z)<br />

]<br />

]

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