It must be emphasized that this is real data, obtained by
connecting my lockin to a real resistor and a real capacitor.
It is not an “artist’s conception”. My lock-in amplifier is
not a software simulation, but rather a real implementation
using the hardware of a real PC plus some software.
This is not highly polished software. It is in the "alpha" (evaluation)
phase. If it looks like it was thrown together by somebody who had never
used Qt before, that's because it was. The list of not-yet-implemented
features is quite long. OTOH ... I find it useful as-is. It's better
than nothing.
If anybody wants to collaborate on making it fancier, please let me know.