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Kasane Teto (Japanese: 重音テト) is a virtual singer software (known as a voicebank) created on the Japanese textboard 2channel for April Fools' Day, 2008.[1] Although the software was initially created as a hoax and did not exist, it later was actually produced and made compatible with singing voice synthesis software UTAU, allowing it to sing. Teto was introduced as a "diva born from a hoax".[2]
Developer(s) |
|
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Initial release | April 1, 2008 |
Stable release | Kasane Teto AI ver 104
/ April 4, 2024 |
Engines | UTAU, Synthesizer V AI |
Available in |
|
Type | Singing voice synthesizer |
License | Proprietary |
Website | kasaneteto |
Kasane Teto | |
---|---|
First appearance | UTAU |
Designed by | Sen (線) |
Voiced by | Oyamano Mayo |
In-universe information | |
Full name | 重音テト (Kasane Teto) |
Gender | Chimera[a] |
Kasane Teto are also released as a voice model in 2021 for TALQu, a deep learning-based free speech software, and in 2023 for Synthesizer V AI, a commercial singing voice synthesis software.[3][4]
Character
editKasane Teto is a 31 year old (15.5 in chimera years) woman. However, because she is a chimera and has a young, girlish appearance and voice, many people believe that her human age is in her teens.[5] In her earliest design, she was 159.5 centimetres tall and weighed 47 kilograms. She is listed as liking baguettes and being a tsundere.[6]
Design
editKasane Teto’s character design portrays her as a youthful girl with red hair styled in curly pigtails. She typically wears a uniform-style outfit with a red and black color scheme, which has become a recognizable part of her image.
Her personality is portrayed as mischievous, energetic and occasionally stubborn.
History
editCreation
editKasane Teto's origins come from 2channel, a Japanese bulletin board. In 2008, a group of users devised a plan to make a fake Vocaloid character. Character names, hairstyles, genders, ages, likes, dislikes, special skills, and other traits were randomly selected from among the suggestions of 2channel users and consolidated into a single character, which would be shown as a prank for April Fools' Day. On 6 April 2008 she appeared for the first time on video, and on 13 April 2008, the first voicebank for Teto was released. The first song using her voice was released on 1 June 2008.[6]
The rights holders who provided the character design and voice of Kasane Teto established the circle "TWINDRILL" in 2009 to promote and manage the character. Although Kasane Teto was a parody character of Crypton Future Media's series of Vocaloid singers, Twindrill organised the rights and established a cooperative relationship with Crypton from 2009 to 2010. Since 2010, Crypton has been the point of contact for commercial use.[2]
2010s and 2020s
editTeto continued to make an impact on the Vocaloid community with many songs being released. In 2012, a DLC pack for Hatsune Miku: Project Diva F featured her.[7] In 2013, she appeared for Hatsune Miku's act in the Sapporo Snow Festival 2013.[8]
Synthesizer V
editFor the 15th anniversary of Teto on 1 April 2023, Japanese software developer AH-Software announced they would be partnering with Twindrill and Crypton Future Media to produce a "Synthesizer V AI" voice database for the character, its first full commercial release. For the occasion, a significant redesign was made, giving Teto a new outfit to stand apart from being a Hatsune Miku parody. The deep learning technology in SynthV made use of singing from the voice provider rather than concatenative phoneme samples like UTAU. This allowed for cleaner, more natural synthesis and various features such as "Vocal Modes" for expression and the ability to sing in any language that Synthesizer V AI supports via "cross-lingual synthesis". This voicebank was released on 27 April 2023 and has received frequent updates.[9] A limited "lite" voice database for the same software would come soon after on May 8 2023, available for free download.
Reception
editDespite not being Vocaloid, Kasane Teto gained popularity among vocaloid fans.[10] Within six months more than 500 videos with "Kasane Teto" tag were published on Niconico, and the song "嘘の歌姫(Uso no utahime/A Fake Diva)" featuring Kasane Teto reached 100,000 views and was put into the Vocaloid Hall of Fame.[11]
Songs
editSome of Kasane Teto's most famous songs include (sorted by views on YouTube as of early January 2025):
- "Mesmerizer" by Satsuki / 32ki (2024) (111M Views)
- "Override" by Yoshida Yasei (2023) (57M Views)
- "Hito Mania" by Sasuke Haraguchi (2023) (41M Views)
- "Tetoris" by Hiiragi Magnetite (2024) (22M Views)
- "Teto Territory" by Oki (2008) (20M Views)^
- "Triple Baka" by LamazeP (2008) (19M Views)
- "Outlaws" by Masarada (2024) (15M Views)
- "Obsolete Meat" by Satsuki / 32ki (2024) (10M Views)
- "Yoshiwara Lament" by Asa (2013) (7.2M Views)
- "Language of The Lost" by Riproducer (2024) (2.9M Views)
Other media
editKasane Teto has appeared in multiple media, such as in Sega's music game franchise Hatsune Miku -Project DIVA-, becoming a promotional character for Hokkaido Broadcasting, having Nendoroid and other plastic figures from Good Smile Company, performing with Nakamura Shidō II on the Kabuki stage, and having novel adaptations.[11]
Notes
editReferences
edit- ^ "Kasane Teto to wa?" 重音テトとは? [What is Kasane Teto?] (in Japanese). Twindrill. Retrieved June 16, 2024.
- ^ a b Takigawa, Kyoko (27 April 2023). "Uso kara Umareta Utahime 「Kasane Teto」 Parodi ga「Honmono」no Shōgyō Shifuto made ... Ayunda Jūgonen" 嘘から生まれた歌姫 「重音テト」 パロディが 「本物」の商業ソフトになるまで...歩んだ15年 [Born from a lie, the past 15 years have seen "Kasane Teto" shift from being a fake parody of a diva to being commercial software] (in Japanese). J-Cast, Inc. Retrieved 16 June 2024.
- ^ "TALQu Voice Model Data". Twindrill. Retrieved 16 June 2024.
- ^ "Tanjō kara Jūgonen, Ooku no Kata ga Aisareta Ano Kyrakuta ga AI Detabesu ni! 「Synthesizer V AI Kasane Teto」 Nisennijūnen Shigatsu Nijunananichi Hatsubai" 誕生から15年, 多くの方に愛されたあのキャラクターがAI歌声データベースに! 「Synthesizer V AI 重音テト」 2023年4月27日発売 [Born 15 years ago and loved by many, character「Synthesizer AI Kasane Teto」 added to Vocaloid Database: goes on sale on 27 April 2023.] (in Japanese). AHS Co. Ltd. 3 April 2023. Retrieved 16 June 2024.
- ^ "KASANE TETO Official Site Q&A". Internet Archive Wayback Machine. Retrieved 2024-12-02.
- ^ a b "重音テト・オフィシャルサイト". 重音テト・オフィシャルサイト (in Japanese). Retrieved 2024-07-06.
- ^ Sahdev, Ishaan (6 November 2012). "Hatsune Miku: Project Diva f DLC Adds "Unofficial" Vocaloids Neru, Haku And Teto". Siliconera. Retrieved 15 June 2024.
- ^ Loo, Egan (3 February 2013). "Snow Miku Revealed for Sapporo Snow Festival 2013". Anime News Network. Retrieved 15 June 2024.
- ^ Bueno, Daniel (4 April 2023). "Kasane Teto Synthesizer V Vocaloid Voice Arrives in April". Siliconera. Retrieved 15 June 2024.
- ^ "Nikkei Shimbun Shasetsu de JASRAC wo Hinikuru" 日経新聞 社説でJASRACを皮肉る [Nikkei Shimbun editorial satorises JASRAC], Daily Cyzo (in Japanese), 6 May 2008, retrieved 17 June 2024
- ^ a b "Rekishi・Nepyō" 歴史・年表 [History/Chronology] (in Japanese). Twindrill. Retrieved 16 June 2024.
- ^ "KASANE TETO Official Site Q&A". Internet Archive Wayback Machine. Retrieved 2024-12-02.