Hi Frank,
It looks interesting. I once tried this feature on a competing solution (TuneLab), but I never really developed a feel for it. What personally bothers me about this approach is having to listen to too many very out-of-tune tones.
At that time, for a rough pitch raise, I learned to use felt strips inserted between the choirs, quickly “throw” the entire section by tuning the middle string up to pitch, and then tune downward while gradually removing the felt and fine-tuning the right and left strings.
How is the following case handled: if one string of a unison is at the correct pitch and the other two are completely off, how can I determine from the graph alone which string is OK? By trial and error?
I’m always open to any innovation, and if this feature is in demand, then that’s great.
Kind regards,
Milan