This is an article about the Clara software for the VOCALOID3 engine.


The development of Clara and Bruno (a Spanish male) started around 2009.[1] To find their voices a casting was set up which included ESMUC's students, professional and amateur singers. From that casting two candidates were chosen, a male and a female. The creation of the voicebanks wasn't continued immediately, as first it was required to adapt VOCALOID's engine to the Spanish and found the company for their creation.

Her demos were revealed October 21, 2011. She and Bruno were released on the 23rd of December. Their production was aided by Giuseppe.

Upon their first release, they were only able to be bought via download and buyers had to use a non-free e-mail account to purchase them. This was to prevent credit card fraud. The problem was not Voctro Labs, but rather the retail seller Share-it's rules for sale. They come without the full editor, but could be bought together or separately. Their joint package made them the cheapest of the VOCALOID3 voicebanks upon their release, despite the user having to purchase the full VOCALOID3 editor separately.

Finally on January 26, a month after their release, they were made available to buy using PayPal, and customers could use a free e-mail account.

On February 21, Voctro Labs put physical copies of the both Clara and Bruno up for sale, along with a new illustration.

Product InformationEdit



El Trenecito (duet w/ Bruno) YouTube
Por una rosa (solo) YouTube
Juntos tú y yo (duet w/ Bruno) Niconico YouTube
Derroche (solo) YouTube
Tres Cosas (Salud, Dinero y Amor) (solo) YouTube
Melody... (duet w/ Bruno) Niconico YouTube


  • Supported OS: Windows 7(32/64bit*)/Vista(32bit)/XP(32bit)
    • *On 64bit Windows 7 systems the software runs in 32bit compatibility mode (WOW64).
  • Processor: Celeron Dual Core 2.1 GHz or better
  • Memory: At least 1GB of RAM
  • Hard disk (Clara): At least 1.3GB of available disk space
  • Hard disk (Bruno & Clara): At least 2.8GB of available disk space

Voicebank LibrariesEdit

Product Information
  Optimum Tempo: 60 ~ 140BPM  Optimum Range: C#2 ~ G3
  Total Tempo (min-max): 80BPM  No. of Keys: W=11, B=8, Total=19
  Trial/Demo Vers?: Yes  Starter Available?: No
Package details
Clara is Bruno's counterpart and is a mature female vocal.

A plug-in was released for her that converts Japanese VSQx files into Spanish Phonetics, allowing her to "speak Japanese". It can be downloaded from VOCTRO labs.

Example VSQx files "Juntos Tú y Yo" and "El Trenecito" can also be downloaded from their website.

Vocal traits as noted:
  • Reported to be overall quite understandable by Spanish fans/users.
  • Her voice is quite flexible, standing well against GEN changes or filters that modify her pitch/timbre.
  • Her vocal is better suited for higher octaves than lower. It has been noted by various Clara users that in her lower range, she lacks depth.
  • Being nasally and soft, her voice has little strength.
  • In comparison to Bruno, Clara is considered harder to use.
  • Clara has the lowest optimum range of any female VOCALOID3 vocal.
Phonetic notes as noted:
  • When using the phonemes [x] and [U] together, Clara will make a static noise instead of pronouncing the sound. This is due to a glitch that involves the [U] phoneme not being meant to be used on its own in the Spanish language.
  • There are minor pronunciation issues that relate to her R; the sound may be distorted by the nearby phonemes when it is at the end of a syllable.
  • She has an Iberian Spanish accent which is noticed with the addition of the [T] phoneme and the realization of the [s] phoneme, which has certain "whistling" or SH-like quality.
Software issues as noted:
  • Unlike MAIKA, she has less phonetics, so her plug-in may not be able to match sounds as close as MAIKA's can.
Voicebank sample



References Edit

  1. link