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Nova-Vox

nova-vox.org

Free plan Windows
Visit nova-vox.org
Spec score 7.4 #18 of 25 in AI Singing Voice Generators

What it is

Nova-Vox is a free, open-source vocal synthesizer for Windows combining traditional and AI-driven methods. Its ESPER framework supports concatenative and granular synthesis and provides a foundation for AI systems. Voicebanks can package expressions, pitches, custom AI models and settings in one file. The engine chooses a suitable pitch for each note, while expressions can be entered with a single letter. A universal phonetics system is described as supporting any language, and a node editor builds adaptive post-processing effects. The Nova-Vox 1.0 download includes the Development Kit and AI base models for creating Voicebanks, delivered through a Windows setup executable. Commercial use is allowed. The maker identifies Johannes Klatt as maintainer and lead developer. The maker also reports performance issues, a prohibitively large installation and code issues in version 1.0. Mirai, the planned 2.0 release, has no release date.

Spec sheet

Product
Nova-Vox is an open source vocal synthesizer combining traditional and AI-driven techniques.Read 4 Oct 2026 · nova-vox.org
Maker
The site identifies Johannes Klatt as its maintainer and Nova-Vox's lead developer.Read 4 Oct 2026 · nova-vox.org
Customization
A universal phonetics system is described as supporting any language, and a node editor lets users build adaptive post-processing effects.Read 4 Oct 2026 · nova-vox.org
Development kit
The download includes the Nova-Vox Development Kit and AI base models for creating Voicebanks.Read 4 Oct 2026 · nova-vox.org
Download
The home page offers a download for Nova-Vox 1.0, and its download link points to a Windows setup executable.Read 4 Oct 2026 · nova-vox.org
ESPER framework
ESPER is an audio description framework built for Nova-Vox that supports concatenative and granular synthesis and provides a basis for AI systems.Read 4 Oct 2026 · nova-vox.org
Known limits
The maker says Nova-Vox 1.0 has performance issues, a prohibitively large install size, and code issues.Read 4 Oct 2026 · nova-vox.org
Pitch selection
The engine automatically picks the best pitch for each note, and expressions can be specified with a single letter.Read 4 Oct 2026 · nova-vox.org
Planned features
Planned Mirai features include cross-language synthesis, an improved editor, a WebUI Development Kit, audio tracks, and VST support.Read 4 Oct 2026 · nova-vox.org
Planned release
The maker says Nova-Vox 2.0, named Mirai, has no planned release date yet.Read 4 Oct 2026 · nova-vox.org
Voicebanks
Voicebanks can bundle expressions, pitches, custom AI models, and settings in one file.Read 4 Oct 2026 · nova-vox.org
Website data
The privacy policy says the site collects comment form data, IP addresses, and browser user-agent strings for spam detection, and says it does not share visitor data with third parties.Read 4 Oct 2026 · nova-vox.org

Plans and prices

Nova-Vox 1.0 Free Free singing voice synthesis; download includes the Development Kit and AI base models Read 4 Oct 2026 · nova-vox.org

Every Nova-Vox plan and price →

Strong points and limits

Strong points

  • Free and open source
  • Combines traditional and AI techniques
  • Voicebanks package models and settings
  • Universal phonetics system
  • Commercial use allowed

Limits

  • Windows only
  • Version 1.0 has performance issues
  • Installation is prohibitively large
  • Mirai has no release date

Who it suits

Nova-Vox suits Windows users seeking free vocal synthesis with customizable Voicebanks and commercial-use permission.

Verdict

Nova-Vox provides an open-source Windows synthesizer with extensible Voicebanks and development tools at no cost. The current 1.0 release carries maker-identified performance, size and code problems, while its successor remains undated.

Where Specifiction places it

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