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user 323806
A filter selectively processes input signals in frequency- or time-domain.
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Ideal Low Pass Filter shifted is still ideal Low Pass Filter?
right)=\begin{cases}1&\omega _m<\omega <3\omega _m\\ 0&else\end{cases}$$
Is it still ideal LPF filter? … EDIT:
I was said in comments it will be Band Pass Filter, but how? band pass filter looks like double shifted LPF, not one.
EDIT: …
