Board Thread:Off-Topic Discussion/@comment-30602727-20160202181457/@comment-29714788-20160414213258

Actually it's Ruby who didn't have the updated script, that's why they had to make a whole new one for her. She was originally going to be recorded with Cyva's script. Ruby's voicebank turned out to be clearer than Cyva's but both Ruby and Cyva suffer from the extreme nasal sound. For Ruby it was confirmed that her samples themselves did not have the nasalness so it could be the engine causing it, for Cyva it might be the way her voicebank was programmed. Dex and Daina were also recorded with new scripts, they're not as versatile as Ruby in terms of pronunciation but they have more appealing vocal types in my opinion. Their gravelly tones are most likely a result of not being recorded with professional equipment, though Ruby wasn't either but she is higher quality because of her phonetic data. Also there were no native English speaking staff on their team when Fukase was being recorded, therefore they couldn't check if his English sounded right, but surprisingly he turned out to be decent quality for a JP Engloid. Rin and Len do have good audio quality because they were recorded with studio grade equipment, but their voice types don't offer as realistic results as non-voice acted vocals like Dex, Daina, and Fukase would. The Kagamines' script is pretty much the same as Miku's, the only improvement they have over her is their pronunciation.

I've heard that Gackt is proficient in English but he has a very hectic career compared to the other Vocaloid voice providers, so it would either take a long time to record Gackpoid English or they're not going to get a satisfactory result. In fact, Fukase took such a long time to record because his voice provider, Satoshi Fukase, was so busy. Megpoid English had a lot of glitches and choppiness because of the way she was rushed, since Megumi Nakajima had to make time to record it (and even then, she's not as a highly demanded vocalist as Gackt)