Paul --
Could you send me a screenshot or two, illustrating what you don't like
about the present spectral display(s) ?
-- Joe, K1JT
On 2/4/2015 10:20 PM, Paul DU2/WA8UGN wrote:
> Hello Developers:
>
> If not already on the "To Do" list, would you consider the following
> suggested "improvement" for the spectral display in Wide Graph?
>
> The waterfall is excellent - I only hope that this suggestion doesn't have
> to impair the waterfall display in any way just to enhance the spectral
> display.
>
> The version of WSJT-X that I am currently using (v1.5.0-devel r4848) allows
> for three selections of data for the spectral
> display: "Current," "Cumulative," and "Linear Avg." Of the three, "Linear
> Avg" is the only selection to have the baseline trace clamped at a specific
> level, where it remains regardless of input signal levels, 60-second
> resets, and the like. It's a nice solid line across the spectrum with
> signal representations being the only variations.
>
> The other two selections are not clamped, but are free to venture up and
> down the vertical graduals. The trace's movement can be caused by most
> anything - noise, signal, setting of volume-related controls, etc. Most
> disconcerting is the downward movement of the trace that occurs when a very
> strong signal is present - with the trace sometimes leaving the display at
> the bottom of the graph. This also causes the waterfall to "go dark" for
> those portions of the spectrum close to the very strong signal. Having two
> such signals at either end of the spectrum often results in only those two
> signals appearing on the waterfall with the rest of the graphic display
> blanked out (other weak to medium-strong signals are blanked out).
>
> MY REQUEST: For the "Current" and "Cumulative" selections, is it possible
> to have the spectrum display's baseline trace appear clamped to a specific
> level on the display? Having the baseline appear clamped for these two
> selections, similar to the "Linear Avg" selection, would produce a cleaner
> representation of the spectrum and could eliminate the blanking of other
> signals on the waterfall when accompanied by a very strong signal.
>
> I ask this so as to obtain the best information from the Wide Graph display
> that I can. I know that the bandpass of the filtered audio input doesn't
> change with the introduction of a very strong signal - it's a constant,
> more or less. Plus, I already know the effects that a very strong signal
> will have on weaker signals within the bandpass - my ears let me know.
>
> Thanks for your consideration (and, hopefully, implementation).
>
> Best 73 de Paul DU2/WA8UGN
>
>
> ------------------------------------------------------------------------------
> Dive into the World of Parallel Programming. The Go Parallel Website,
> sponsored by Intel and developed in partnership with Slashdot Media, is your
> hub for all things parallel software development, from weekly thought
> leadership blogs to news, videos, case studies, tutorials and more. Take a
> look and join the conversation now. http://goparallel.sourceforge.net/
> _______________________________________________
> wsjt-devel mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/wsjt-devel
------------------------------------------------------------------------------
Dive into the World of Parallel Programming. The Go Parallel Website,
sponsored by Intel and developed in partnership with Slashdot Media, is your
hub for all things parallel software development, from weekly thought
leadership blogs to news, videos, case studies, tutorials and more. Take a
look and join the conversation now. http://goparallel.sourceforge.net/
_______________________________________________
wsjt-devel mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/wsjt-devel
