Traitement du Signal Le Filtrage Numérique - PRIMA
Traitement du Signal Le Filtrage Numérique - PRIMA
Traitement du Signal Le Filtrage Numérique - PRIMA
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<strong>Le</strong> <strong>Filtrage</strong> Numérique Séance 4Exemplesb 1 (m) = [1 1]B 1 (ω) = 1 e jω(-1/2) + 1 e jω(1/2) = 2 cos(ω/2)2-π π0b2(m) = [ 1 2 1 ] (Deuxième filtre Binomial)⇒ B2(ω) =1 e jω(–1) + 2 e jω(0) + 1 e jω(1)= 2 + e jω + e –jωB2(ω) = 2 + 2 Cos(ω) = [2cos(ω/2)] 24-π π0b 4 (m) = [1 1] *4 = [1 4 6 4 1] B 4 (ω) = 6 + 8 cos(ω) + 2 cos(2ω) = [2cos(ω/2)] 4ω16-π π0ω4-15
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