[TenTec] 2.033

[Gary Hoffman]

Grant, no, it isn't the same deal.  In the final analysis, it does not have
the same effect.  Correlation based DSP computer algorithms are much more
effective at noise reduction than are band pass filters.  Both do help of
course.  And neither is at all perfect.  But there is a big difference.

Regards, Gary, AA2IZ


----- Original Message ----- 
From: "Grant Youngman" <nq5t at comcast.net>
To: "'Discussion of Ten-Tec Equipment'" <tentec at contesting.com>
Sent: Wednesday, May 03, 2006 4:47 PM
Subject: Re: [TenTec] 2.033


>
> > Has nothing whatsoever to do with a bandwidth limiting
> > filter.  That, of course, is another approach, which works to
> > a certain degree also.  But not what a real DSP noise reducer does.
>
> The are many ways to skin the proverbial cat.  Isn't the net effect of
> passing highly correlated signals (cross-correlated with a signal of known
> frequency or auto-correlated) and rejecting relatively uncorrelated
signals
> (noise) a very narrow filter centered at the frequency of the highly
> correlated signal (or signals).
>
> Grant/NQ5T
>
>
>
>
>
>
>
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