OmniVoice
Open-source voice generator supporting 646 languages with zero-shot cloning and text-based voice design capabilities.
Community:
Product Overview
What is OmniVoice?
OmniVoice is a free, open-source AI voice generator developed by the k2-fsa research team that supports 646 languages through a single unified model. Unlike traditional TTS platforms requiring separate language packs or subscriptions, OmniVoice offers three core capabilities: natural text-to-speech conversion, zero-shot voice cloning from 3-25 second audio samples, and voice design from text descriptions alone. The platform uses a single-stage architecture that maps text directly to audio, achieving 2.85% word error rate and 0.830 speaker similarity scores in independent benchmarks. Built on 581,000 hours of open-source speech data and released under Apache 2.0 license, it enables both personal and commercial use without subscription fees or character limits.
Key Features
646 Language Support
Single unified model covering 646 languages and dialects from major languages to low-resource ones, with no language pack installations or switching required.
Zero-Shot Voice Cloning
Clone any voice from a 3-25 second audio sample instantly without training or fine-tuning, with cross-lingual capability to generate speech in any supported language.
Voice Design From Text
Create custom voices by describing age, pitch, accent, and style in plain text, generating a matching speaker without any audio reference needed.
Expressive Speech Tags
Embed inline tags like [laughter], [sigh], and [gasp] directly in scripts for natural non-verbal emotional rendering that matches human speech patterns.
Production-Ready Performance
Runs at approximately 45× real-time speed on GPU with 2.85% word error rate across 24 languages, suitable for both real-time applications and large batch processing.
Use Cases
- Audiobook & Podcast Production : Narrate long-form content with consistent voice delivery and reusable voice identity across episodes or chapters for professional audio production.
- Game NPC Dialogue : Prototype and ship character voices rapidly using text-based voice design and cloning workflows for dynamic in-game dialogue systems.
- Global Localization : Generate one script in 646 languages with a unified system while maintaining consistent brand voice across all regional markets and languages.
- E-Learning & Language Tutoring : Produce clear pronunciation examples with adjustable speaking speed from 0.5× to 2.0× for comprehension and repeat practice scenarios.
- Customer Support & IVR : Deploy natural-sounding menu prompts and support audio with compliance-friendly options for business communication workflows.
FAQs
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