Hello,

In a previous post, I was talking about some potential experiments/variations I would have to do on the pitch/dynamics model for my VOCALOID2 recreation project. I had already programmed the base code for Bonada 2005 expression system, actually many months ago now. This was all in anticipation of the day I finally compare my system to samples that were actually generated by VOCALOID2. Well today I decided that day is now... and I was totally wrong about everything.

Well not everything, but I was wrong about the expression system. It was actually the Ortola 2001 expression system that was still used in VOCALOID2 seemingly, except using a different dynamics model from the Predictive Amplitude Shaping algorithm that was used in VOCALOID1.

Anyway, at first this made me even more concerned, because there was much less information about the Ortola 2001 expression system. One of the big mysteries was how the pitch was handled over the note duration. Well, as you can see in the attached image, it is very simple. In fact it is actually the simplest thing possible - it is a straight line.