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need help filtering a signal
From: |
Philipp Schwaha |
Subject: |
need help filtering a signal |
Date: |
Fri, 7 Dec 2001 17:34:29 +0100 |
hi!
what i need to do is fiter a signal to remove noise. what i wanted to try
first was a fft then cut all frequencies except the the important ones (e.g
100Hz, 200Hz ...), but when i did the fft i did not know how to do this,
since there are no frequencies associated with the values the function fft
returns.
this is the first time i try to do something using an fft.
then i discovered the function fftfilter, but i could not make it produce the
results i wanted.
how can i remove all frequencies from a certain signal, except a few selected
ones?
thanks
philipp
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- need help filtering a signal,
Philipp Schwaha <=