VOCALOID-flex

Vocaloid-Flex is a particular branch of the Vocaloid software which was designed for talking. It is more delicate to edit then the normal Vocaloid engine. It can be used in conjuction with software suits such as V-Talk. It differs from the normal engine, whose focus is only on singing, it however works in the same manner of assembling phonetic data. Yet despite the fact it can now be commerically bought, much of the details of the engine are largely unknown.

Ryuto and CV-4Cβ are the only two voicebanks known to use it.