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Hiyama Kiyoteru V4

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This is an article about the Hiyama Kiyoteru V4 software for the VOCALOID4 engine.


Silhouettes for the AH-Software VOCALOIDs were revealed on a poster on November 6th, 2014; however, it was unconfirmed what they were for at the time. [1] On November 20th, it was confirmed in the livestream for VOCALOID4 that they all, with the exception of Tohoku Zunko, would receive VOCALOID4 voicebanks.  

On May 28th, 2015, AH-Software showed a new design for Kiyoteru to promote the AniNite concert in Vienna, Austria. Its relation to his VOCALOID4 update was unknown at the time.[2]

On August 17th, it was noted that Kiyoteru and Kaai Yuki would receive demos some time after the AniNite concert ended. It was also mentioned that Kiyoteru's VOCALOID4 voicebank was recorded from scratch to improve his upper and lower ranges.[3]

On September 30th, Kiyoteru was confirmed to receive a Natural and Rock vocal. He had also gained a new design which corresponded with the Rock voicebank, while his Natural voicebank used the design that was shown off in May to promote the AniNite concert. His Natural and Rock vocals could be purchased separately or together, and a Starter Pack was confirmed to be available. His release date was announced to be October 29th, 2015.[4]

On October 15th, trial versions of his voicebanks became available.[5]

Product InformationEdit



夜の欠片 (Yoru no Kakera) (Short ver.) SoundCloud
夜の欠片 (Yoru no Kakera) (Full ver.) Niconico YouTube SoundCloud
氷の熱情 (Koori no Netsujou) (Short ver.) SoundCloud
氷の熱情 (Koori no Netsujou) (Full ver.) Niconico YouTube SoundCloud
氷の熱情 (Koori no Netsujou) (Low ver.) Niconico YouTube


  • OS:
    • Windows: Windows 10, Windows 8.1, Windows 8, Windows 7(32/64bit)
    • Mac: Mac OS X 10.9, 10.8 (32/64bit)
  • CPU: Intel Dual Core CPU
  • RAM: 2GB or more
  • Hard Disc Capacity:
    • Natural:
      • More than 1.5GB (using VOCALOID4 Editor)
      • More than 9.4GB (using VOCALOID4 Editor for Cubase + Cubase)
    • Rock:
      • More than 1.5GB (using VOCALOID4 Editor)
      • More than 9.4GB (using VOCALOID4 Editor for Cubase + Cubase)
    • Complete (both):
      • More than 2.5GB (using VOCALOID4 Editor)
      • More than 10.3GB (using VOCALOID4 Editor for Cubase + Cubase)
    • Starter Pack (Windows-only)
      • More than 2.5GB (using VOCALOID4 Editor)
  • Internet connection.

Voicebank LibrariesEdit

Product Information
Package details
The updated version of the VOCALOID2 package.
Vocal traits as noted:
  • XSY possible between "Natural" and "Rock"
    • In total the package offers the equivalent of 2 additional voicebanks achievable via XSY. The total tone variation offered by the package comes to a theoretical 4 voicebanks in total.
    • As of Ver.4.3.0 of the VOCALOID4 engine, AH-Software Co. Ltd. have opened up XSY to work with all their VOCALOID3 and VOCALOID4 vocals except Kaai Yuki V4, so if a User owns another of their vocals XSY between them will open up.[6][7]
    • In total if user was to own every VOCALOID3 and VOCALOID4 Ah software vocal, this offers the equivalent of 156 additional voicebanks achievable via XSY. The total tone variation offered by the combined packages comes to a theoretical 169 voicebanks in total.

Individual VocalsEdit

Product Information
  Tempo: 60~160bpm  Range: A1~C4
Package details
NATURAL is a direct update from VOCALOID2 Hiyama Kiyoteru. It was recorded from scratch.
Vocal traits as noted:
  • Maintains the clear quality of the previous version, with smoother transitions.
  • His overall range was expanded.
  • Triphones added.
  • Can handle slower tempo songs than "Rock"
  • Has a smaller tempo range than "Rock"
  • Has a larger vocal range than "Rock"
  • Compared to the original VOCALOID2 version, this has a much larger vocal range, with both upper and lower ranges seeing a large increase.
Software issues as noted:
  • Being new recordings, it may not produce the same results as the V2 version.
Voicebank sample

Hiyama Kiyoteru V4 Natural

Kiyoteru Natural Solfege

Product Information
  Genre: Rock  Tempo: 70 - 190bpm  Range: C2~G4
Package details
ROCK is a powerful vocal suited for faster genres.
Vocal traits as noted:
  • Has the needed power that "Natural" does not have for genres such as Rock.
  • It can handle songs that require a great deal of high masculine tones.
  • It is also capable of handling sudden changes of notes from low to high much easier and maintain extended notes better.
  • Has a larger tempo range than the Natural voicebank and therefore can handle more genres of music.
  • Is suited for faster tempo songs, rather than lower tempo songs.
  • Has a smaller vocal range than "Natural."
Voicebank sample

Hiyama Kiyoteru V4 Rock

Kiyoteru Rock Solfege


  2. link
  3. Tweet stack
  4. Natural and Rock confirmed
  5. Kiyoteru trial
  6. link
  7. link


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