New K3 NR algorithms

[WA9VEE]

I have used the new NR release for a few days now, and see some plus and minus with the changes.. at least as I use the K3 for CW which is the main mode here.

I usually listen at 50 or 100Hz, so the background noise is already much reduced compared to wider bandwidths. To find someone calling me off frequency I depend on CW Skimmer to show that to me, and then RIT tune them in.

The new NR algorithms now act well in noise reduction. The noise is really reduced better. I also like that the SSB NR has lost the echoes and works better.

What I miss is that old NR effect of emphasizing weak signals on CW by making them louder and sort of popping them up out of the noise. I used to depend on that to help in QRP contests. Time will tell if losing that for the sake of lower overall noise is a good tradeoff.  I also see little difference now between the F1 through F4 settings. They all sound pretty much the same to me. I think I would like to see more difference in effects.

Wayne/WA9VEE

[Brett Howard]

Seems to me that both the previous stuff and the new stuff has its
merits.  I find that I use the new ones more than I did the old ones...

But it seems that with as many selections as we have (and many of them
seem very similar) why not have one or two of the numbers implement the
previous algorithms.  

~Brett

On Thu, 2009-08-20 at 03:25 -0500, WA9VEE wrote:

> I have used the new NR release for a few days now, and see some plus and
> minus with the changes.. at least as I use the K3 for CW which is the main
> mode here.
>
> I usually listen at 50 or 100Hz, so the background noise is already much
> reduced compared to wider bandwidths. To find someone calling me off
> frequency I depend on CW Skimmer to show that to me, and then RIT tune them
> in.
>
> The new NR algorithms now act well in noise reduction. The noise is really
> reduced better. I also like that the SSB NR has lost the echoes and works
> better.
>
> What I miss is that old NR effect of emphasizing weak signals on CW by
> making them louder and sort of popping them up out of the noise. I used to
> depend on that to help in QRP contests. Time will tell if losing that for
> the sake of lower overall noise is a good tradeoff.  I also see little
> difference now between the F1 through F4 settings. They all sound pretty
> much the same to me. I think I would like to see more difference in effects.
>
> Wayne/WA9VEE
>

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[Joe Planisky]

I finally got a chance to load up the new FW and try the new NR.  Like  
everyone else, I didn't notice much if any difference between F1-1 and  
F4-4 while turning the knob.  However, I found that there WAS a  
difference if I dialed in a new setting, then turned NR off and back  
on.  In other words (in CW mode):

1) set NR to F1-1.
2) turn NR off, then back on.  Notice the sound.
3) set NR to F4-4
4) turn NR off, then back on.  Notice the sound.

When I do that, F4-4 is clearly more aggressive than F1-1.

73
--
Joe KB8AP

On Aug 20, 2009, at 1:25 AM, WA9VEE wrote:
...

> I also see little
> difference now between the F1 through F4 settings. They all sound  
> pretty
> much the same to me. I think I would like to see more difference in  
> effects.

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[williamsonr]

Joe, same here! Big difference in changing settings from F1-1 to F4-4 in one continuous motion vs. your method with an exit NR and turn it back on.  Hummmmmmm?  I also notice that if you use your method with a noticeable NR improvement when switched on and then go into adjust mode the effect switches back to the normal operation where the effectiveness is not as noticeable.  Looks like you have to adjust, turn off NR, then turn NR back on for each setting.  Maybe the guys missed some sort of reset between filter steps?

Rodger

---- Original message ----

>Date: Thu, 20 Aug 2009 16:11:42 -0700
>From: Joe Planisky <[hidden email]>  
>Subject: Re: [Elecraft] New K3 NR algorithms  
>To: Elecraft Discussion List <[hidden email]>
>
>I finally got a chance to load up the new FW and try the new NR.  Like  
>everyone else, I didn't notice much if any difference between F1-1 and  
>F4-4 while turning the knob.  However, I found that there WAS a  
>difference if I dialed in a new setting, then turned NR off and back  
>on.  In other words (in CW mode):
>
>1) set NR to F1-1.
>2) turn NR off, then back on.  Notice the sound.
>3) set NR to F4-4
>4) turn NR off, then back on.  Notice the sound.
>
>When I do that, F4-4 is clearly more aggressive than F1-1.
>
>73
>--
>Joe KB8AP
>
>On Aug 20, 2009, at 1:25 AM, WA9VEE wrote:
>...
>
>> I also see little
>> difference now between the F1 through F4 settings. They all sound  
>> pretty
>> much the same to me. I think I would like to see more difference in  
>> effects.
>
>______________________________________________________________
>Elecraft mailing list
>Home: http://mailman.qth.net/mailman/listinfo/elecraft
>Help: http://mailman.qth.net/mmfaq.htm
>Post: mailto:[hidden email]
>
>This list hosted by: http://www.qsl.net
>Please help support this email list: http://www.qsl.net/donate.html

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