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Hiyama Kiyoteru (Synthesizer V Studio 2)

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Hiyama Kiyoteru
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This article is about the Synthesizer V Studio 2 software known as a voice database. If you are looking for the Synthesizer V character then click here.

History[]

Pre-Synthesizer V[]

Planning of the first three AH-Software Co. Ltd. singing vocals began in 2007.[1] Hiyama Kiyoteru's voice was provided by a Japanese singer, whose name was back then a secret. His VOCALOID2 voicebank, as well as those of SF-A2 miki and Kaai Yuki, were released on December 4, 2009. On August 12, 2010, Kiyoshi Hiyama himself announced on Nico Nico Live that he was Kiyoteru's voice provider.[2][3]

Kiyoteru and many other AH-Software vocals were announced to be receiving updates for VOCALOID4 on November 20, 2014's livestream, after their silhouettes were revealed on a poster two weeks earlier without providing any further context.[4] On May 28, 2015, AHS showed a new design for him to promote the AniNite concert in Vienna, Austria; its relation to his V4 update was unknown at the time.[5] On August 17, it was noted that Kiyoteru and Yuki would receive demos some time after the AniNite concert ended, and that Kiyoteru's V4 voicebank was recorded from scratch to improve his upper and lower ranges.[6] On September 30, Kiyoteru was confirmed to receive a Natural and Rock vocal, also gained a new design corresponding with the Rock voicebank, and adopted the AniNite concert design shown off in May as his Natural voicebank key artwork; both vocals, which could be purchased separately or together (a Starter Pack option bundling both with the VOCALOID4 Editor was also offered) were released on October 29, 2015.[7]

2023[]

Synthesizer V AI miki & Hiyama Kiyoteru announcement
AH-Software Co. Ltd. livestream, December 1, 2023

On December 1, 2023's AHS livestream, it was announced that both miki and Kiyoteru would be receiving AI voice databases for Synthesizer V Studio for their joint 15th anniversary in 2024.[8] With regards to Yuki, it was noted that it would be very difficult to record a new voice library for her (due to the fact that her original voice provider, who back then in 2009 was a child and as of today still remains unrevealed for legal reasons, is now an adult and her voice quality has changed), and as for using her existing V4 Natural voicebank to derive a new voice database (whether a new Standard voice database from its raw samples or a Synthesizer V Plus-style AI voice database trained from songs performed by it was not mentioned, though), they would still have to first consult with Yamaha Corporation before carrying it out.[9]

2024[]

On October 31, 2024, during AH-Software official live broadcast No. 207, it was announced that both miki and Kiyoteru would be delayed until 2025 because they wanted to refine their voice databases and ensure that they meet the highest quality standards, making sure that the final product is the best possible and lives up to fans' expectations.[10]

2025[]

On January 24, 2025, during AHS's livestream from NAMM Show, they announced that both miki and Kiyoteru were now being developed instead for the upcoming Synthesizer V Studio 2 engine, which was added as another reason for their delay relative to their original December 4, 2024 release projection for the older engine; they now hoped to release both voice databases sometime in spring 2025.[11]

A group of prematurely-published Amazon Japan listings (that were later taken down) showed that Synthesizer V 2 AI miki and Hiyama Kiyoteru, along with a previously-unannounced SV2 update for Miyamai Moca, would be released on March 21 alongside Synthesizer V Studio 2 Pro.[12]

On February 13, pre-orders for Synthesizer V Studio 2 Pro as well as for miki, Kiyoteru, and Moca 2 were officially opened at the AHS Store, with release date confirmed to be March 21[13] as per the Amazon Japan links (which were reinstated the day after). It was also revealed that, upon registering copies of Synthesizer V 2 AI miki and Hiyama Kiyoteru into AHS Store's MyPage, users would be able to download, at no extra charge, downgraded Synthesizer V AI versions for the outgoing Synthesizer V Studio software.[14]

Voice Database Information[]

Demonstrations[]

Synthesizer V AI[]

Demonstrations

AHS公式生放送第207回 (AHS Live Broadcast, episode 207) Favicon-ytYouTube
view

Synthesizer V 2 AI[]

Demonstrations

宣夜説 (Sen'yasetsu) Favicon-nnNicoNico Favicon-ytYouTube
夜の戸開く (Yoru no To Hiraku) Favicon-ytYouTube
アンダーマーチ (Undermatch) Favicon-nnNicoNico Favicon-ytYouTube
数学そうはならんやろの歌 (Suugaku Sou wa Naran Yaro no Uta) Favicon-nnNicoNico Favicon-ytYouTube
view

Voice Databases[]

Product Information
Versions
Starter Pack Available?: Yes  Trial Version Available?: Yes

Package details as noted:
Hiyama Kiyoteru is a masculine Japanese voice database based on the singing style of Kiyoshi Hiyama. As an AI vocal, this enables him to sound realistic and human-like.

Vocal traits as noted:
Kiyoteru is able to sing more realistically through changes in volume and breath, further enriching singing details, making each singing unique, and providing creators with more options. Through this mode, he can use AI Retakes to create multiple "takes" of a sung section to find an ideal vocal without the need for "laborious tuning". This feature is only available in the Synthesizer V Studio 2 Pro Editor.

Phonetic notes as noted:
  • Phoneme format: Romaji
  • Through Cross-lingual Singing Synthesis, Kiyoteru can sing in not only Japanese but also in English, Mandarin Chinese, Cantonese Chinese, Spanish, and Korean. This feature is only available in the Synthesizer V Studio 2 Pro Editor.

Vocal Modes as noted (Synthesizer V Studio 2 Pro editor only):

Hiyama Kiyoteru comes with seven variations within the Vocal Mode function:[15]

  • "Breathy"
  • "Bright"
  • "Falsetto"
  • "Soft"
  • "Clear"
  • "Solid"
  • "Whisper"

System requirements as noted:
  • OS: Windows 10/11 or later (64-bit); macOS 11 or later.[16]
  • CPU: Intel Core i5 (4th generation) or higher; AMD Ryzen; Apple M1 or higher.[16]
  • Memory: 4GB or more.[16]
  • HDD: 1GB or more.[16]
    • This is the space required when one voice database is installed.
    • Space is required according to the number of voice databases to be installed.
  • Others: audio device, internet connection required, email address able to send and receive messages required. (You need to create an account at Dreamtonics to use the product.)[16]
    • Please check the product page for the latest operating environment. Even if you do not have a DVD-ROM drive, you can install the software via the Internet. Even if the software meets the requirements for operation, we do not guarantee that it will work on all computers.

License agreements as noted:

Voice database sample

Product Information
Versions
Lite Version/FLT Available?: No  Starter Pack Available?: No  Web Version Available?: No

Package details as noted:
Hiyama Kiyoteru is a masculine Japanese voice database based on the singing style of Kiyoshi Hiyama. As expected of an AI voice database, he is capable of singing with a more human-like and realistic voice.

Vocal traits as noted:
With Diffusion Probabilistic Models (DPM), Kiyoteru is able to sing more realistically through changes in volume and breath, further enriching singing details, making each singing unique, and providing creators with more options. Through this mode, he can use AI Retakes to create multiple "takes" of a sung section to find an ideal vocal without the need for "laborious tuning". This feature is only available in the Synthesizer V Studio Pro Editor.

Phonetic notes as noted:
  • Phoneme format: Romaji
  • Through Cross-lingual Singing Synthesis, Kiyoteru can sing in not only Japanese but also in English, Mandarin Chinese, Cantonese Chinese, and Spanish. This feature is only available in the Synthesizer V Studio Pro Editor.

Vocal Modes as noted (Synthesizer V Studio Pro editor only):

Hiyama Kiyoteru comes with seven variations within the Vocal Mode function:[15]

  • "Breathy"
  • "Bright"
  • "Falsetto"
  • "Soft"
  • "Clear"
  • "Solid"
  • "Whisper"

System requirements as noted:
  • OS: Windows 10/11 or later (64-bit); macOS 10.13 or later; Linux Ubuntu 20.04 or later (64-bit).
  • CPU: Intel Core i5 or higher, or equivalent AMD processor; Apple M1 or higher.
    • For high-quality editing of AI audio: Intel Core series 4th generation i5 (i5-4xxx) or higher is recommended, or AMD Athlon X4 845 or higher, including Ryzen series.
  • Memory: 2GB or more.
  • HDD: 1GB or more.
    • The amount of space required depends on the number of voice databases to be installed.
  • Display resolution: 1280x800 or higher resolution.
  • Others: audio device, internet connection required.
    • A computer must be connected to the Internet in order to activate (register), update to the latest version, and receive user support for inquiries, etc. Even if the software meets the requirements for operation, we do not guarantee that it will work on all computers. Performance, including the number of tracks that can be used simultaneously, varies depending on the overall performance of the computer.

License agreements as noted:

Voice database sample

References[]

  1. ↑ https://vocaverse.network/threads/general-discussion-thread.32/page-27
  2. ↑ VOCALOID Blog - 出た！比山貴咏史氏が「氷山キヨテルの中の人」であることをカミングアウト (Coming out Ice Mountain Teru)
  3. ↑ Himi Izutsu Official Web - 比山貴咏史（比山清） Kiyoshi Hiyama
  4. ↑ https://x.com/tomo_ahs/status/530305583916646400
  5. ↑ https://x.com/ahsoft/status/604141034432385024
  6. ↑ Tweet stack
  7. ↑ https://x.com/ahsoft/status/649059676655513600
  8. ↑ https://x.com/ahsoft/status/1730572443927167143
  9. ↑ https://x.com/vocaspherenews/status/1730573495829152247
  10. ↑ https://www.youtube.com/watch?v=TI_P4-zQQy4&t=
  11. ↑ https://www.youtube.com/watch?v=oFyeuKGD-a0&t=
  12. ↑ https://www.amazon.co.jp/dp/B0DVGF9C4K/ (February 6, 2025 archive)
  13. ↑ https://x.com/ahsoft/status/1889872999995912549
  14. ↑ https://x.com/ahsoft/status/1889888411168940523
  15. ↑ 15.0 15.1 https://x.com/ahsoft/status/1889873413604589904
  16. ↑ 16.0 16.1 16.2 16.3 16.4 https://www.ah-soft.com/synth-v/sp/#spec (February 18, 2025 archive)

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