Is it accurate in your experience?
I've not had professional voice training or anyone else that I trust to evaluate my progress. I can only say that the content of its report seems to accurately reflect changes that I induce. The included examples also appear to reflect its accuracy. Granted, that's all still terribly subjective.
I used it as a sort of video game whereby I'd shoot for the "highest score" (pitch and resonance) just to explore that sensation.. not with the intention of using those parameters for casual speech. My thought was that if I pushed the pendulum past the point where I wanted it to be in practice then I would land in the correct parameters during casual use.
I (think I) found that pushing to maximum pitch and resonance teaches one to change their oral and laryngeal posture to more accurately perform feminine speech.. not just pitch and resonance, but also accent. That's where your 50:50 comes in. I believe 50:50 can easily be femme with the proper accent.
I think it also plumb wrecked my hillbilly accent.. and I'm fine with that.
