[time-nuts] decimation versus decimation

[millerke6f at aol.com]

the killing of one in every ten of a group of people as a punishment for the whole group (originally with reference to a mutinous Roman legion).


-----Original Message-----
From: Richard Solomon via time-nuts <time-nuts at lists.febo.com>
To: Discussion of precise time and frequency measurement <time-nuts at lists.febo.com>
Cc: Richard Solomon <dickw1ksz at gmail.com>
Sent: Tue, Feb 25, 2020 7:41 am
Subject: Re: [time-nuts] decimation versus decimation

The Ancient Romans had another,
not so nice, definition.

73, Dick, W1KSZ

On Tue, Feb 25, 2020 at 7:56 AM Dana Whitlow via time-nuts <
time-nuts at lists.febo.com> wrote:

> I'm confused:
>
> I seem to see multiple (at least double) meanings for the term
> 'decimation'.
>
> One meaning is simply: "take every nth sample and discard
> the others without regard to possible aliasing".
>
> The other meaning is: "take every nth sample, but first prefilter
> as appropriate to (sensibly) eliminate aliasing".
>
> Which is it?  And if the answer is "both", then shouldn't we all
> be very careful to explicitly specify which meaning applies to
> the situation at hand whenever we use the term "decimation"?
>
> Thanks,
>
> Dana    K8YUM
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