Choosing the Right AI Voice Engine: Fast, Expressive, or Multilingual
Vois TeamTLDR:Use the fast engine for English drafts and iteration (3-6x real-time). Use the expressive engine for English podcasts and audiobooks that need emotion (2x real-time). Use the multilingual engine for non-English content across 23 languages (1x real-time). All 63 voices work with all three engines.
Frequently Asked Questions
What is the fastest AI voice engine in Vois?
The fast engine generates English speech at 3-6x real-time speed. With GPU acceleration on Apple Silicon Macs, it reaches 6x real-time, meaning a 10-minute script generates in under 2 minutes.
Which Vois engine should I use for podcasts?
The expressive engine is best for podcasts. It supports emotion tags like [laugh], [sigh], and [chuckle] that add natural inflection to dialogue. It runs at 2x real-time speed and produces the most lifelike English output.
Can I switch between engines in the same project?
Yes. You can switch engines at any time in a project. Generate rough drafts with the fast engine, then re-generate final takes with the expressive engine. All 63 voices work across all three engines.
Does the multilingual engine support English too?
Yes. The multilingual engine handles English and 22 other languages. However, for English-only content, the expressive engine typically produces better results because it's optimized specifically for English speech patterns.
How many languages does Vois support?
The multilingual engine supports 23 languages including English, Spanish, French, German, Japanese, Chinese, Korean, Hindi, Arabic, Portuguese, and more. The fast and expressive engines are English-only.
Written by
Vois Team
Product Team
The team behind Vois, building the future of AI voice production.
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