Software for anti-aliasing filtering

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Article #1004

#1004

From: Henrik Madsen
Date: Tue, 01 Oct 1991 20:54

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The problem of aliasing is well-known. It enters when a time series
under analysis consists of measurements made at a discrete, equally
spaced set of times on some phenomenon that is actually evolving
continuously - or on a much finer time scale. 

As an example consider some phenomenon sampled with a sampling time
of 1 minute. Afterwards only hourly values are wanted. In order to
avoid aliasing we must use some sort of anti-aliasing filtering on
the one minute values before picking out the hourly values.

Does anyone know some anti-aliasing software? 

Thanks  / Henrik Madsen, Inst. Math. Stat. and Op. Res., Tech.Univ.Denmark.

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From: hm@imsor.dth.dk (Henrik Madsen)
Newsgroups: sci.math.stat,bit.listserv.stat-l,comp.theory.dynamic-sys
Subject: Software for anti-aliasing filtering
Summary: Software for anti-aliasing filters is wanted
Keywords: aliasing, sampling, spectrum
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Date: 1 Oct 91 20:54:26 GMT
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