I still say turning off the thing while transmitting would solve it. You don't need to process the side one.
-=-=-=-=-=-=-=-=- 73, Gwen, NG3P On Wed, Jul 29, 2026, 15:12 David Gilbert via Elecraft < [email protected]> wrote: > > ChatGPT tells me that almost all of the latency is due to the frame size > of the FFT processor. At the application's default sample rate of 2024 > that works out to be just barely under the 43 msec I measured. That > sample rate is needed to do the actual processing with decent results, > so the best workaround seems to be a two path approach ... use a much > lower frame size when the sidetone is detected and the default frame > size when it isn't. Theoretically the latency could be dropped to maybe > less than 5 msec. > > And as you say, if everything was implemented inside the radio, the > keying itself could control that with almost zero latency. > > 73, > Dave AB7E > > > > On 7/29/2026 10:30 AM, Walter Underwood via Elecraft wrote: > > The algorithm probably has inherent latency regardless of where it is > implemented. This is one of the challenges of digital processing. > > > > But…if implemented internal to a radio, the sidetone could bypass the > processing. > > > > wunder > > K6WRU > > Walter Underwood > > CM87wj > > http://observer.wunderwood.org/ (my blog) > > > >> On Jul 29, 2026, at 10:03 AM, Gwen Patton via Elecraft < > [email protected]> wrote: > >> > >> Can it just turn off when sending CW? When you go back to listening, > turn > >> it back on? It doesn't need to be on while you're manually sending CW, > you > >> can't hear the noise anyway because you're transmitting. > >> > >> > >> -=-=-=-=-=-=-=-=- > >> 73, > >> Gwen, NG3P > >> > >> > >> On Wed, Jul 29, 2026 at 2:19 AM David Gilbert via Elecraft < > >> [email protected]> 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. > >>> > >>> 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. > >>> > >>> 73, > >>> Dave AB7E > >>> ______________________________________________________________ > >>> Elecraft mailing list > >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft > >>> Help: http://mailman.qth.net/mmfaq.htm > >>> Post: mailto:[email protected] > >>> > >>> This list hosted by: http://www.qsl.net > >>> Please help support this email list: http://www.qsl.net/donate.html > >>> Message delivered to [email protected] > >> ______________________________________________________________ > >> Elecraft mailing list > >> Home: http://mailman.qth.net/mailman/listinfo/elecraft > >> Help: http://mailman.qth.net/mmfaq.htm > >> Post: mailto:[email protected] > >> > >> This list hosted by: http://www.qsl.net > >> Please help support this email list: http://www.qsl.net/donate.html > >> Message delivered to [email protected] > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:[email protected] > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > Message delivered to [email protected] > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
