Yes that's right. Mindmaker is Hungarian.
"The Flexvoice text reader is the successor of the PC talker, developed by Mindmaker Kft (József Király and his team) in Hungary. The new software was officially announced in Hungary in 2002. Flexvoice was a hibryd system based on machine learning and formant synthesis. The newly developed inverse formant synthesizer has made it possible to describe and store the speech elements recorded from human speech with compressed phonetic data. Speech was synthesized by the formant synthesizer software. Flexvoice was able to speak in a variety of voices, also whispering and hoarse voices. The Flexvoice speech synthesizer has also been used in the VILÁGHALLÓ book reader application for the blind in Hungary."
did you know this @erion? By any chance you or someone has a copy of Világhálló, perhaps we can adapt that voice to work in current FlexVoice engine?

Tamas G
in reply to Tamas G • • •Erion
in reply to Tamas G • • •I might have heard some sample sentences spoken by FlexVoice ages ago, but never had the Hungarian version.
The machine learning aspect is completely new to me, however, I wonder why they stopped developing their engine.