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RUBY started as an independent project in December 2013 with only Prince Syo working on her. Half a year later, he was joined by Anders, who had previously worked for VocaTone. Despite Anders helping Syo, a development team did not exist, since Syo for the most part exclusively worked on RUBY.
At some point, Syo searched for companies that could support RUBY. PowerFX, Zero-G and Crypton expressed interest in the project. It became clear that Crypton would not allow much creative freedom at all. Anders thought that Zero-g and PowerFX would be better candidates because he had worked with and trusted them. The two chose PowerFX because they would allow more control over the design. Anders later remarked that at no point was anyone promised any control over the final design and that it was his decision to choose PowerFX.
On September 19th, 2014, Syo publicly revealed that he and Anders were working on a VOCALOID and a voice sample of RUBY was posted. At the time, RUBY was affiliated only with Vocatone, but not PowerFX. However, Bil Bryant, the CEO of PowerFX, revealed in October that RUBY would be delayed so that she could be updated to the VOCALOID4 engine.
On October 30th, Natasha Allegri posted pictures of concept. It was revealed that her and another artist had been requested to submit concept art for consideration. At the time, it was not confirmed whether the concept art would be used in RUBY's final design or whether either of the artists were going to draw the final design.
Early in the year, some early production samples of RUBY were discovered. Syo explained that these test audio clips were not the original uploads of those samples. They had been removed and someone else re-uploaded them. However, there was no objection to them existing so long as everyone acknowledged that they were of early versions of RUBY's vocal and that they did not reflect the current status of the project.
It was announced that RUBY would be associated with PowerFX.
Syo expressed a desire to create at least two voicebanks for RUBY to take advantage of VOCALOID4's cross synthesis capabilities, but was unsure due to the doubled workload. The extra workload was owed to the increase in triphonetic data. In addition, PowerFX was only willing to pay for one English voicebank. They wanted to see how well the voicebank sold before adding any additional voicebanks. It was also confirmed that RUBY originally had a Japanese voicebank, but this was scrapped. Her English recordings were redone to sound similar to her Japanese voicebank.
It was confirmed that Natasha Allegri would draw Misha's design for the physical copy of RUBY, after resolving some miscommunications with PowerFX. It took 3 days to produce the art instead of the expected 1-2 weeks. Natasha commented that doing the art made her very happy.
On September 18th, Syo tweeted that RUBY would be released within the month.  Later that day, he tweeted that the release date of the download version will be the September 23rd. Boxed versions would be available afterwards.  On the day of September 23rd, it was noted that she was to be delayed. She was officially released as a digital download on October 7th.
Early Production SamplesEdit
|Problem||Niconico YouTube bilibili CLYP|
|ヒビカセ (Hibikase) - English version||CLYP|
|Why Don't You Do Right||CLYP|
|RUBY Demo medley||PowerFX Website|
- VOCALOID4 Editor
- OS: Windows 10 (32/64bit) / Windows8.1 / Windows8 / Windows 7(32/64bit)
- CPU: Intel Dual Core CPU
- RAM: 2GB or more
- Hard Disk Capacity: 3.54 GB
- Prince Syo's RUBY custom dictionaries (English, Japanese, Mandarin Chinese): Official Dropbox.com download.
| RUBY is a young, female voice with a strong tone and general American Accent. PowerFX described her as "a youthful female vocalist with a smooth, joyful sound with the power and soul to ”kick it out” when needed."
According to Misha RUBY has the same voice as her UTAU Hachi had for recording. The resulting nasally tone was put down by Misha as either a result of the English sounds turning out more nasally, or because of the Vocaloid engine. RUBY's voice was confirmed by Misha as being achieved via voice acting.
|Vocal traits as noted:|
|Phonetic notes as noted:|
|Software issues as noted:|