If |H( )| is square integrable and if the integral ( int_{- pi}^ pi | – McqOptions

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1.	If \|H( )\| is square integrable and if the integral ( int_{- pi}^ pi \|ln \|H( )\|\|d ) is finite, then the filter with the frequency response H( )=\|H( )\|ej ( ) is?
A.	Anti-causal
B.	Constant
C.	Causal
D.	None of the mentioned
Answer» D. None of the mentioned

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