CeVIO is the collective name of a range of computer software projects, including Vision (digital signage) and Creative Studio (audio creation software).

The Speech portion offers a large dictionary of words to which Sato Sasara, Suzuki Tsudumi, and Takahashi speak from and are accurate in the Japanese language, although the option to manually edit it exists as well.

CeVIO Creative Studio's speech intonation can be controlled with three parameters: cheery, angry, and sad.

The software was initially released as "CeVIO Creative Studio FREE" with Sato Sasara as the only voice.

Anything else would require external software but didn't really stop the choppiness of her vowel transitions.