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. 58/75<br />
Spre rezolvarea exactă<br />
• Notăm ψ(z) = [1 z z 2 ... z N ] T<br />
• Dacă P(z) = H(z)H(z −1 ), atunci putem scrie<br />
P(z) = ψ(z −1 ) T h · h T ψ(z) = h T Ψ(z)h (10)<br />
un<strong>de</strong><br />
Ψ(z) = ψ(z −1 )ψ(z) T =<br />
⎡<br />
⎢<br />
⎣<br />
1 z z 2 ... z N<br />
z −1 1 z<br />
. .. z N−1<br />
.<br />
. .. . .. . .. .<br />
.<br />
. .. . .. 1 z<br />
z −N ... ... z −1 1<br />
⎤<br />
⎥<br />
⎦<br />
(11)