Board Thread:Poll Archive/@comment-188.162.229.6-20150411152142/@comment-53539-20150412074345

Similarities come without saying and if anyone says that every vocaloid is "unqiue", its true to the point they each have unique sets of samples that make up the databases. However, just look at vocal impressionists in real life and see how many imitators there are out there. Big Al himself was once going to be voiced by a Elvis Impersonator.

Basically, the human voice has limitations built in, and everyone simply has variants of the same model of the human voice. It depends on language, gender, area accent, etc, but we all are limited to our voices falling within the same set of vocal ranges. If we weren't limited to this, they the human species would have slight communicate as our ears are programmed to be hear those vocal rang frequencies best of all.

So naturally, there is going to be overlaps between voice types within vocaloid, and there will be points that vocaloid DO sound alike. The best examples being Gumi/Kokone/Chika, who are all similar vocal types... Kokone was done on purpose for the simple reason of she is what Gumi can't be, while I'd argue that Chika (who pushed many who normally sit on the "every vocal is a unique snowflake" bench to finally admit defeat) was likely a accident.

With professional vocalists in particular you'll see more like-voices simply because the music industry irons out unwanted voices and trains vocalists to be able to do certain things with their voices. This is why vocals like the CFM CV series are different. Voice actors and actresses are trained in the opposite direction to be able to warped their voice to sound differently as possible so they can do many character types and voices without them sounding too alike. But they don't always produce the best singing results... Since their not trained professionals.

So yeah. Vocaloid itself being based on the human voice is going to encounter similar or the same problems as vocalists in real life. As others have said, this is mostly dependent on the producers tuning capabilities, but it can be a clause due to direction of the voice or the vocalists vocal themselves. We're at the stage where most of the female vocals are now covered, ergo, we're going to get a lot of similar sounding female vocaloids in the future.