My daughter-in-law's home upright had most of the bass and lower tenor notes "spot on", as far as the sound of unisons and intervals, although they were all about 5 cents flat. The higher tenor and treble notes were quite flat (15 cents and more) and had a lot of dissonant unisons. I mostly wanted to make it sound pleasant. It's a little-used Yamaha from the 1980's, in almost pristine shape. I'm a hobbyist, still learning how to tune these things...
I ended up doing a pitch raise to A=440 and will do a fine tuning in a few weeks.
I was thinking that I could have instead left all the notes that sounded good, fixed the unisons, and brought the flat treble notes up close to a comparable pitch to match the notes I left alone. Then I would use the Optimize feature to fine tune the strings without changing a lot of the notes that were good from the start. Tuning already takes me way too long and I'd rather not tune strings that "sound in tune" as is. Not sure if I'm making sense here...
Would this approach be supported by features of Pianoscope? The goal would be to not retune all the notes that sounded okay to begin with (but were a bit flat of the concert pitch curve), just tune the other bad notes.
Another hypothetical way to phrase the question:
If the lower 50 notes were perfectly in tune with each other, but a bit flat, and the rest were out of tune, would using the optimize feature leave the 50 alone and just set targets for the rest, or would it average everything so that one would have to tune all 88 notes?
