If HD( ) is the frequency response of the low pass filter, then for wh – McqOptions

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1.	If HD( ) is the frequency response of the low pass filter, then for what value of , HD( )=1?
A.	\| \| = /D
B.	\| \| /D
C.	\| \| /D
D.	None of the mentioned
Answer» D. None of the mentioned

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The filter eliminates the spectrum of X( ) in the range /D < < .
If HD( ) is the frequency response of the low pass filter, then for what value of , HD( )=1?
The sequence ( bar{v}(n) ) can be obtained by multiplying v(n) with a signal p(n) of period D.
We need not relate the spectrum of y(m) to spectrum of x(n) to obtain frequency response characteristic of y(m).
If x(n) produces y(m), then x(n-n0) does imply y(n-n0) for any value of n0.