Chiyu

* Synthesizer V Studio
* Synthesizer V

> “The moment I stretch my wings, cataclysm follows; Praying to god turns fruitless and my glory falls to ashes.
>
> The wings of Phoenix, scorch all things. Hear my roar, echoing and ever-lasting.
> ”
> —Back of Chiyu's box, taken from her demo "Wing of Phoenix"
>
>

**Chiyu** (赤羽) is a Mandarin Chinese vocal developed and distributed by Beijing Photek S&T Development Co., Ltd., and was released in April 2019 for the first *Synthesizer V* engine. She is part of the MEDIUM⁵ cast.

Chiyu was updated to *Synthesizer V Studio* as a Standard voice database in July 2020. She was expected to receive a private Standard-trained AI voice database known as "Chiyu Synthesizer V Plus", but no development information had been provided. She is currently expected to be receiving a full AI voice database in 2023.

Her voice provider is YouMao UNEKO, a Chinese singer.

## Concept

A shape known as the tetrahedron appears on Chiyu's logo. It is present in the second stroke of the "赤" character in her name. In the spiritual meaning of Metatron's Cube, the tetrahedron represents fire, which influenced her design, name, and concept.

In March 2019, Chiyu was revealed to be part of the MEDIUM⁵ cast and was one of the girls who derived from a single being known as ZERO who possessed Metatron's Cube. She is listed as a Sagittarius.

According to the Dreamtonics website, Chiyu is described as a brave and honest girl.

### Etymology

"**Chi**" (赤; *chì*) means "red" or "scarlet". "**Yu**" (羽; *yǔ*) means "feather", "plume", or "wing", and it is also the fifth note in the Chinese pentatonic scale (la). Together, her name means "scarlet feather".

Her name is rendered in Kana as "チーユ".

### Appearance

The red feathers on Chiyu's design symbolize the phoenix.

### Relationships

* Cangqiong - Older Sister.
* Xingchen - Younger Sister.
* Haiyi - Younger Sister. When initially introduced, Haiyi noted that they did not get along well due to their elements being the opposite (fire vs. water).
* Shian - Younger Sister.
* ZERO - Originator.

## Voice Libraries

* Chiyu (*Synthesizer V*), April 30, 2019
* Chiyu Standard (*Synthesizer V Studio*), July 10, 2020
* Chiyu Standard Lite (*Synthesizer V Studio*), July 30, 2020
* Chiyu Synthesizer V Plus (*Synthesizer V Studio*), Unreleased; Conceptual only
* Chiyu AI (*Synthesizer V Studio*), In development; expected in 2023

## Additional Information

### Marketing

Chiyu was initially introduced as Xingchen's second older sister, but did not make her debut until April 19, 2019. Since then, she was marketed as a member of MEDIUM⁵ and had a variety of merchandise which included but was not limited to: charms, dakimakura, albums, standees, figures, and more. Chiyu also had her own official Weibo account and official bilibili playlist. Her birthday is acknowledged as November 26 and Quadimension usually released official content annually, including illustrations, merchandise, and songs. Fans were also encouraged to create content for her.

Chiyu's 1st official album: *Fairytale*2022 birthday by ATDan
Chiyu was invited to perform at bilibili Macro link 2021. She sang "Wànxiàng Shuāngtiān" with her voice provider, YouMao UNEKO.

On occasion, Beijing Photek would host tuning competitions and paid music production courses for users to participate and attend. These would feature all of Beijing Photek's vocalists, including Chiyu.

### Reputation

Chiyu's character status
**Reaction**

Chiyu was well-received within the Chinese fan-base. As the first Synthesizer V character from Beijing Photek and as VOCALOID Xingchen's sister, she was considered to be highly anticipated.
**Impact**

As a MEDIUM⁵ character and the first sister related to Xingchen to release, Chiyu quickly received attention from existing Quadimension fans, especially after being revealed last among the sisters. After release, Chiyu was used in a variety of genres as producers experimented with her voice database. With a powerful, yet versatile voice, she excelled especially in rock and Gufeng genres.

Chiyu's Synthesizer V bank was released on Beijing Photek's Taobao page, making it difficult for overseas users to purchase her if they did not know how to navigate and use the site. For her Synthesizer V Studio voice database, she was made available on Animen's ANiCUTE shop, which was friendlier to use for overseas fans. In addition, she is currently the only Beijing Photek vocal to receive a Standard Lite voice database, allowing producers to trial her using this free-to-use voice library and making her even more accessible compared to the other vocals from the same company.

Although specific vocals have not been mentioned, Ddickky noted that the commercial sales of their voice databases have never been so profitable, leading to a lack of motivation, especially for the creation of AI voice databases of the cast members introduced in Synthesizer V and Synthesizer V Studio.
**Miscellaneous**

On November 25, 2019, Chiyu was the first Synthesizer V character to reach 1 million views on a song overall: "Tiānxià Jú", an original by Chen Yiming, KBShinya, and Luo Qihuai. Afterward, she continued to receive more originals to reach this number of views over time. She was also the first to perform live, making her stage debut in July 2021.
**Achievements**

* First Beijing Photek Synthesizer V vocal to be released.
* First female Beijing Photek Synthesizer V vocal to be released.
* First Mandarin Chinese Beijing Photek Synthesizer V vocal to be released.
* First female Mandarin Chinese Beijing Photek Synthesizer V vocal to be released.
* One of the first Synthesizer V Studio voice databases to release.
* One of the first Synthesizer V vocals to be updated to Synthesizer V Studio.
* One of the first Synthesizer V Studio female voice databases to release.
* One of the first Beijing Photek Synthesizer V vocals to be updated.
* One of the first Mandarin Chinese voice databases for Synthesizer V Studio.
* One of the first Standard Lite voice databases to be released.
* One of the first Mandarin Chinese Standard Lite voice databases to be released.
* One of the first female Standard Lite voice databases to be released.
* First Beijing Photek Synthesizer V vocal to receive a Lite voice database.
* First Synthesizer V character to receive 1 million views on an original song.
* First Synthesizer V character to perform on stage.

## References

1. ↑ https://www.weibo.com/5056093502/HeGaXl6sx
2. ↑ https://imgur.com/a/uNyloOz
3. ↑ https://www.weibo.com/5056093502/Ht77TBy2Z
4. ↑ https://t.bilibili.com/607304690576678463
5. ↑ https://t.bilibili.com/771690836003913744
6. ↑ https://cdn.discordapp.com/attachments/695380056155095054/1084001776069525515/Screenshot\_2023-03-11-14-25-20-306\_com.png - "ai声库是和星尘ai一起推进的，去年就同时邀约了生源，这点资金我也完全没问题。只是有些声源会担心ai抢饭碗，有些声源单纯有点拖…而对我而言，商业策略角度现在出声库并不是很好的时机，所以我也只能做到过俩月去催一下，不至于急道周周催天天问。于是结果如你所见，但不出意外不是过于拖的话，今年minus和赤羽应该可以吧。"

"不过另一点是，不光声源觉得ai和自己太像，我也觉得如果这么像声源而非角色之前的声库。不是很合适。星尘一定要做是因为v4性能过于差，所以硬顶着声音变化的反对也做了。而其他几个角色是sv2带拼接式，性能过得去，那做了ai产生与星尘类似的声音变化风波，在外加商业角度（卖声库）不是那么挣钱，你能理解我逻辑了吧。"
7. ↑ https://jelila.wordpress.com/tag/spiritual-meaning-of-metatrons-cube/
8. ↑ https://www.bilibili.com/video/av42960488
9. ↑ 9.0 9.1 Dreamtonics Line Up
10. ↑ https://weibo.com/6460110224/H1TmoFxXr
11. ↑ https://weibo.com/7036438321/KhxmweDeW
12. ↑ https://www.bilibili.com/video/BV1Y44y1q7Gx
13. ↑ https://t.bilibili.com/513030553568983648
14. ↑ https://t.bilibili.com/595083945257636743
15. ↑ https://t.bilibili.com/771690836003913744
16. ↑ https://cdn.discordapp.com/attachments/695380056155095054/1084001776069525515/Screenshot\_2023-03-11-14-25-20-306\_com.png - "ai声库是和星尘ai一起推进的，去年就同时邀约了生源，这点资金我也完全没问题。只是有些声源会担心ai抢饭碗，有些声源单纯有点拖…而对我而言，商业策略角度现在出声库并不是很好的时机，所以我也只能做到过俩月去催一下，不至于急道周周催天天问。于是结果如你所见，但不出意外不是过于拖的话，今年minus和赤羽应该可以吧。"

"不过另一点是，不光声源觉得ai和自己太像，我也觉得如果这么像声源而非角色之前的声库。不是很合适。星尘一定要做是因为v4性能过于差，所以硬顶着声音变化的反对也做了。而其他几个角色是sv2带拼接式，性能过得去，那做了ai产生与星尘类似的声音变化风波，在外加商业角度（卖声库）不是那么挣钱，你能理解我逻辑了吧。"
17. ↑ https://cdn.discordapp.com/attachments/695380056155095054/1084001780926525450/Screenshot\_2023-03-11-14-25-45-806\_com.png - "回复 @覆雪繁花 :这个还是等快出了看情况才能定，不过基本应该是类似星尘ai的直接卖新的，因为和之前拼接式完全是不同技术工作量和投入成本上也完全不相干，所以会是大几百重新卖，这也是我觉得不好卖商业上不太合适出的一个原因"

## External links

* Official Weibo
* Official bilibili playlist