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Kaai Yuki (VOCALOID2)

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This is an article about the Kaai Yuki software for the VOCALOID2 engine.


Her voice is taken from recordings of an actual elementary school student. However, the name of the one who offered the voice for Yuki is still unknown.[1]

Global ExploitEdit

AH-Software recently announced that they would be selling their VOCALOIDs in Germany, with Yuki being destined to be the first sold there.[2]

Final RetirementEdit

At the end of 2015, it was announced that from March 31, 2016, VOCALOID2 was being retired and no new serial codes were be issued by Yamaha.[3]

AH-Software is planning how to deal with this.[4]

Product InformationEdit



± (Plus Minus) YouTube
Vocaloid Grade School Student YouTube
Try Again Niconico YouTube


  • Computer;2000 + more than Pentium4 2 GHz/Athlon XP
    • recommended Pentium4 2.8 GHz/Athlon 64 2800 + or more
  • OS(Recommended in the case of stand-alone Vista / 7) Windows XP/Vista/7
    • Available only 32Bit OS version
  • required hard disk space
    • Kaai Yuki: 1GB or more
  • RAM memory;(The 1GB recommended) 512MB or more
    • VOCALOID2 VST instrument when using Real-time recommended 2GB or more
  • Other;DVD-ROM drive / sound card / Internet connection environment (activation time)
  • Interface; VST, ReWire, stand-alone

Voicebank LibrariesEdit

Product Information
  Tempo: 50 - 150 BPM  Range: F2 - C4
Package details
Yuki and Kiyoteru were designed to be VOCALOIDs that had human-esque traits about them. Yuki is designed to sing childrens songs and has an innocent, soft and cute voice.[5] However, she was not voiced by a professional child singer and does not produce professional singer results. She is still a faithful CV vocal, and gives an accurate portrayal of a child voice.
Vocal traits as noted:
  • Her child-like voice makes her unique among the VOCALOID 2 voicebanks and allows for a soft, sweet style of song without being too "Loli" sounding.[6]
  • She was the youngest sounding vocal released during the VOCALOID 2 era and is only "child" vocal in VOCALOID2 voiced by a child.[7]
  • Her voice is very soft, leading to her higher notes losing some clarity compared to her lower notes but it gives her voice has a realistic and natural tone.
  • Due to not being from a professional singer, her voice has no ascension and lacks power. Expression is difficult and the voice is more limited in its roles for music.[8]
Phonetic notes as noted:
  • She has strong consonants. Some users say the beginning consonant sounds get shorter as well as with other AH-S vocaloids.[9]
Voicebank sample


Yuki Kaai

A trial version has been released of this product.

References Edit

  1. [1] - 開発元に聞く、新ボーカロイドの狙いとこれから (We ask the developers, the future aim of the new Vocaloids)
  2. link
  3. link
  4. link
  5. [2] IT Media - 新人VOCALOID「ボカロ小学生」「ボカロ先生」「ボカロフルカワミキ」登場――さっそく歌ってもらった (1/2) (The new VOCALOIDs a Grade schooler, a teacher, and Furukawa Miki appear)
  6. link
  7. [3] VOCALOIDism - New VOCALOID “Kaai Yuki” And “Hiyama Kiyoteru” By AH-Software, New Demo Song for “Project if…
  8. link
  9. [4] Amazon/jp - VOCALOID2 歌愛ユキ


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