You are probably right. It just won't do full break in then of course.
But everything is a tradeoff, right?
73,
Dave AB7E
On 7/29/2026 1:37 PM, Gwen Patton wrote:
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
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