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Re: [TenTec] Orion V1 Noise Reduction Settings

To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Subject: Re: [TenTec] Orion V1 Noise Reduction Settings
From: Martin AA6E <aa6e@ewing.homedns.org>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Fri, 15 Dec 2006 15:14:24 -0500
List-post: <mailto:tentec@contesting.com>
Agreed these are good articles.  But they are "concepts", and they may 
or may not tell us what is inside the actual v1 Orion as delivered, let 
alone v2.  In my view, TT would do well to explain the DSP code -- or at 
least the algorithms used -- to the public.  This is what Doug could do 
so well.

73 Martin AA6E

Merle Bone wrote:
> Ken (K9VV) wrote:
> For those of you who were interested in NOISE REDUCTION 
> algorithms, I believe you will find the answer here in
> part 3 of Doug's well crafted and thorough QEX articles
> (shown below with arrows)
> -------------------------------------------------------------------------------------------------
> Ken, thanks very much for the links. Based on some other data I have seen, 
> the link you highlighted 
> -----> http://www.doug-smith.net/kf6dx3.pdf <-------
> 
> is a very good description (First 4 pages - pages 13,14,15 and 16) of the NR 
> algorithm used (An Adaptive Predictor with Leaky LMS Algorithm) in the V1 
> Orion code and in the early releases of the V2 Code (I don't know about later 
> releases of the V2 Code).
> 
> Actually, you can find many of the Orion V1 Firmware design concepts in the 
> four part QEX article you referenced (Also in Doug Smith's book published by 
> the ARRL - "Digital Signal Processing Technology). 
> Thanks again,
> Merle - W0EWM
> 
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