[Elecraft] Noise Reduction

[Kevin der Kinderen]

I'd love to hear some A/B audio samples of nitPic if they become available.
It operates at AF? Operates well in congested bands?

I've always been told that by the time the signal is demodulated to AF the
damage is done. Why I believe this I have no clue. So when I hear something
about noise reduction or filtering on AF it always makes me think of
howling CW and scratchy voice. The best filter I used at audio was the old
Autek QF-1A. Boy could I get that howling! I think I need to catch up and
learn new old ham tales.

73,
Kev K4VD

On Wed, Aug 23, 2017 at 1:24 PM, P.J.Hicks <hickspj467 at comcast.net> wrote:

> I have been involved with a project developed by Peter Rhodes of the UK
> that started as a way to improve the NR in his Pick a Star trx. It appears
> that the project is nearing the limits of what can be done and will
> hopefully go public soon. The project is called nitPic and operates on the
> audio output (phones) under Peter's software. It is truly amazing what it
> can do. Briefly it has two modes, SSB and CW. It processes the audio in
> 'bins' or slices. As each bin is processed the SW decides if it is signal
> or noise; if signal it is enhanced and if noise it is reduced. Sounds
> simple. It almost completely eliminates a CW signal if in SSB mode and vice
> versa eliminates a SSB signal if in CW mode. I have been able to bring out
> CW signals from the noise floor that do not show the slightest trace on my
> PowerSDR waterfall/spectrum display.
>
> So good things are happening and improvements are in the works.
>
> PJH, N7PXY
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to kkinderen at gmail.com
>