On 7/28/2026 11:19 PM, David Gilbert via Elecraft wrote:
A ham that has been experimenting with my NoiseNuller application
pointed out to me where the current latency is indeed a problem, and
that is when listening to the sidetone while sending CW with a key or
paddle. The sidetone audio coming out of the computer is delayed enough
to throw off your keying at anything other than pretty slow speeds if
you depend upon that for feedback. It wouldn't be a problem for keying
from a keyboard, but it is when manually keying.
Yes, any latency is an issue for this.
I'm working to improve that.
In my opinion, though, it's just another reason why this kind of
processing really belongs inside the rig itself.
That takes a lot of processing power, AND a rig with two synchronized
receivers in their signal chain. Of the rigs I know about, that MIGHT be
Flex and Elecraft K4D. At least six years ago, then neighbor NR0V
demonstrated spectacularly good single radio NR on SSB that he had
written for Anon, and I urged Wayne to look at it. Elecraft recently
released a firmware update that reportedly does great things for SSB,
but didn't do anything useful on my electronically generated noise when
I tried it on CW.
Wayne -- what I think Dave has done is an app that does what an NCC-1 or
NCC-2 in the audio chain. I've not tried it, but listened to his
simulations.
73, Jim K9YC
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