anti-aliasing filter after sampling

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mouh nyquist
mouh nyquist 2014-12-31
评论： Star Strider 2015-1-1
can I applied an anti-aliasing filter to the signal after sampling; and how to do this

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Star Strider
Star Strider 2014-12-31
As a general rule, anti-aliasing filters are implemented in hardware (as analogue filters) before sampling. An aliased signal in your sampled signal will always be part of it.
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mouh nyquist
mouh nyquist 2015-1-1
thank you a lot for your help ; now I understand what anti-aliasing filters mean :)

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