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News Release

Japanese / English

24 February 2023

Techno-Speech, Inc.

AI singing software VoiSona releases first English singing voice library “Chis-A [tʃíːseɪ]”!

Techno-Speech, Inc., (headquarters: Higashi-ku, Nagoya; Representative Director: Keiichiro Oura), developer of singing software VoiSona, which realistically reproduces human singing voices using the latest AI technology, released its first English voice library “Chis-A [tʃíːseɪ]”, at 12 noon on February 24, 2023.


[About Chis-A additional English voice library]

 “Chis-A [tʃíːseɪ]” is a next-generation synthesized singing voice. She realistically expresses an androgynous singing voice through AI technologies (deep learning, etc.) to reproduce voice quality, habits, and singing style. Chis-A Japanese voice library comes standard with VoiSona. Chis-A can now sing in English with her English additional library! Create your own Chis-A with VoiSona’s rich set of editing functions and fine-tune her pitch, timing, vibrato and voice quality.

  • Voice library name: Chis-A [tʃíːseɪ]

  • Language: English

  • Illustrator: cherico

  • Planning and production: Techno-Speech, Inc.

  • Release date: February 24, 2023

  • Format: Download

  • Pricing: Annual subscription fee: 6,600 JPY (6,000 JPY without tax)
                Monthly subscription fee: 880 JPY (800 JPY without tax)

* “Waveform Generator Prototype A” testing function included with Japanese voice library "Chis-A" is not included with English voice library "Chis-A [tʃíːseɪ]".

* Chis-A Japanese voice library, which comes standard with VoiSona, will continue to be available for free.



She's an AI who sings while residing in a laboratory private network, hard at work as she studies under the staff providing her with new vocal data each day. She sounds almost human in her singing, with the voice of an adult but still with a child-like personality. Although she can be impulsive at times, she's affectionately loved by all of the members.

Nominal age: 19

Height: 160cm

Weight: 46kg


<Product demo songs>

”Altamira” | Nejishiki feat. Chis-A



”heart flower” | TITANA feat. Chis-A



”Atomo-Sephere” | Gento Miyano feat. Chis-A



”Golden Afternoon” | Circus P feat. Chis-A



<Chis-A 1st anniversary song>

“In Your Eyes” | RED feat. Chis-A



[Campaign information]

To celebrate the release of “Chis-A [tʃíːseɪ]” English voice library, we are offering a free trial campaign. Try this voice library for free for one month from the date of your application when you sign up between the release date on February 24 (12 noon) and February 28, 23:59 (JST).


  • Campaign period: Feb. 24, 2023, 12:00 – Feb. 28, 2023, 23:59 (JST)

* VoiSona account registration is required.


<How to participate>

During the campaign period, apply for annual subscription or monthly subscription on the license page, and enter your credit card information. You will be able to use the voice library for 0 JPY for the first month of the plan. By default, after the one-month free period, you will be moved to the subscription plan you selected (annual subscription or monthly subscription). If you do not wish to continue paid subscription after the free trial period, visit the campaign page during the free trial period and click the “Cancel Reservation” button. This will disable automatic renewal after the free period ends.


[Upload on music distribution services]

 As part of the release of Chis-A English voice library, you will be able to register the songs you created using the Chis-A character on music distribution services BIG UP!, TuneCore Japan, and narasu from February 24, 2023. Be sure to take advantage of this opportunity and distribute the songs you create!



[VoiSona special live streaming information]

 To celebrate the release of Chis-A [tʃíːseɪ] English voice library, the “VoiSona Special Feature” will be streamed live from “DTM Station Plus!”, the streaming channel of desktop music creation website DTM Station. Be sure to view in real time!


[Chis-A first anniversary illustration contest]


To celebrate the first anniversary of Chis-A’s debut (February 24), an illustration contest is now being held in collaboration with the content submission site “piapro (Crypton Future Media, INC.)”.



cherico (official illustrator of Chis-A), VoiSona official, and piapro will select the submissions. Prize money (+ comments) will be awarded to the winning entry. Also, as long as the main subject is Chis-A, you can submit a drawing together with "Sato Sasara", "Kirune", and "AiSuu" from VoiSona, or piapro characters (Hatsune Miku / Kagamine Rin / Kagamine Len / Megurine Luka / MEIKO / KAITO). We look forward to your participation.


[About VoiSona]

 Singing software VoiSona realistically reproduces human singing voices using the latest AI technology. The name VoiSona combines the words “Voice” and “Persona,” which contains meanings of “personality” and “enchantment,” to present the message that this software enables users to express a variety of personalities through voice. The goal of VoiSona is to create a circular community that supports both voice providers and creators.

With a wealth of AI technologies developed over many years as its foundation, Techno-Speech is providing software tools that are now easier to use and more responsive to the needs of professionals. These tools include support for VSTi and Audio Units and are available on both Windows and macOS. VoiSona’s default voice library features Chis-A Japanese voice library, with an alluring androgynous voice. VoiSona can be used as a standalone app for users who do not have a VSTi/Audio Units-compatible digital audio workstation. The voice waveforms output from VoiSona and Chis-A can be used free of charge, whether it is for commercial or non-commercial use, individual or corporate use, with some exceptions.


  • Product name: VoiSona

  • Release date: September 1, 2022

  • Format: Download

  • Pricing: The VoiSona application and the Japanese voice library “Chis-A,” which is included as the default singing voice, are free.
    * VoiSona account registration is required.
    * Additional voice libraries require paid subscriptions.


[Operating environment for VoiSona]

  • Supported operating systems: Windows 11 / Windows 10 (64-bit Japanese or English version) / macOS Sierra 10.12 – Ventura 13

  •  CPU: Apple Silicon / Intel / AMD dual-core processor or higher
    * Quad-core or higher recommended
    * Low processing performance may cause skipping during playback. (The output file is unaffected.)

  • Memory: 4 GB RAM or more
    * 8 GB RAM or more recommended

  • Hard disk space: At least 1 GB of available space for installation

  • Display: 1280 x 720 or greater full color

  • Digital audio workstation: Any DAW software that supports VSTi or Audio Units
    * With some DAWs (e.g., Studio One 5 Pro for Windows, REAPER for Windows, and REAPER for macOS; with VoiSona as VSTi plug-in), you can synchronize the DAW’s playback position from VoiSona.)

* An Internet connection is required for installation and use of some features.


[Overview of Company]

 Techno-Speech’s overall aim is to enrich people’s lives by deploying its voice-related research and development achievements in fields such as entertainment, education and healthcare. Our efforts and applications include:


  • Development of speech synthesis and singing synthesis platforms for professional use

  • Tools to assist in creation of digital educational materials for online and on-demand classes

  • Reproduction of artists’ (including deceased) singing voices

  • Application of technologies to games, apps and web services

  • Online concerts by virtual YouTubers

  • Post-recording systems with virtual actors

  • Application of technologies to AI and speech modules of spoken dialogue systems

  • Generation of flexible reference speech/vocalization in foreign language and vocal education

  • Speech aid devices for patients with ALS, laryngeal cancer, etc.

  • Digital signage for nursing facilities


Company name: Techno-Speech, Inc.

Representative: Keiichiro Oura, Representative Director

Address: Arc Shinsakae Building, 1-14-13 Aoi, Higashi-ku, Nagoya, Aichi 461-0004, Japan

Description of business activities: Multimedia-related software research and development



[Contact Us]

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