[R-SIG-Finance] R.e. Non-financial "seasonality"
icosa atropa
icos.atropa at gmail.com
Fri Dec 28 09:28:40 CET 2007
Is there any useful information in the 59-61 Hz range? If not,
excising everything from that frequency range using a bandstop filter
should give minimal distortion to the rest of the spectrum.
Another question relevant to smoothing is: how much power is in the
noise spikes relevant to the signal of interest?
best,
xian
> spikes are not necessarily AT 60 Hz, but vary between 59 and 61. Is
> there a good way to filter out these spikes?
> Walt Keneipp
> wkeneipp at stormproducts.com
--
Far better an approximate answer to the right question, which is often
vague, than the exact answer to the wrong question, which can always
be made precise -- j.w. tukey
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