[Elecraft] NoiseNuller Sidetone Latency Fixed (?)

[David Gilbert]

I think I have (with the help of ChatGPT) possibly fixed the sidetone 
latency problem, and it's still a browser application.  The solution 
seems to be similar to what Gwen, NG3P, proposed except instead of 
turning off the processing when the sidetone is detected the application 
routes the sidetone AROUND the processing when the sidetone is 
detected.  The difference might be subtle but that keeps the noise 
reduction intact for a proper recovery when the sidetone stops.  I 
wasn't able to detect a latency problem even well above 40 words per 
minute, but my CW speed isn't good enough for me to be the best judge of 
that.

The hang time for the rerouting is user definable, although I don't 
think it can be set low enough for full breakin without generating audio 
artifacts.

I still need to do some more testing, but things look promising.

I also created slightly different processing for SSB versus CW in order 
to get just a little bit better performance for CW since single tones 
are easier to handle.  That also prevents the sidetone detector from 
triggering on a voice frequency.  The choice between the two is a simple 
toggle button in the user interface.

When I'm satisfied with everything I'll upload the revised version to my 
website.

73,
Dave   AB7E