There are tons of use cases out there - storybooks, agents, etc. But my main goal was to find which TTS has the best voice clone options, comparable to Elevenlabs. I have a shortlist of voices that I run every tts through to see how it handles accents specifically, which to me is the best demonstration of its versatility. I'd recommend you try these out as well, and you'll pretty quickly find the weakness in a model. Some actresses with good accents to test are: Rebecca Ferguson, Charlotte Rampling, Mariangela Melatto (this is the model-killer), and Ornella Muti. I also like to test generic/fake accents of cartoon characters. My particular go-to is Morgan Lofting's Baroness. Her accent isn't based on any particular culture, so models will struggle with placing it and emulating it. On the male side, you can snatch Javier Bardem's Stillgar from Dune or any one of Jeff Goldblum's performances (the coffee shop scene of The Fly has a great monologue) to grade a model's capacity. I ran these voices and others through some of the top TTS models out there, like Moss-TTS, Breeze-TTS, Chatterbox-TTS, VibeVoice, Fish Audio S2 Pro, and Omni Voice. Out of them all, only Omni Voice passed every single accent. Two of the hardest for most models to get is Baroness and Mariangela Melatto, and it nailed them both. Not only that, it added the trill of the tongue when pronouncing certain words, even though I only used a 5-second sample that didn't contain it, which surprised me. What also surprised me was Fish Audio S2 - which is usually touted as one of the "higher end" open source models - failed the test. The model that got the closest to Omni Voice (though still failing to full capture the accents) was Breeze-TTS, which did noticeably better than Fish Audio - which again, was a bit of a shocker. However, whilie some seeds of Breeze would feel close, others often emulated a "neighboring" accent to get close; for example, it would give a character a bit of an indian accent to match mariangela's italian accent, so it wasn't a solid match. That said, it was the only other model that could add trills on a 5-second sample that didn't contain them. In addition to accurately matching the accents, OmniVoice was the fastest to generate the audio by a significant margin. It also had a better one-shot performance on multi-paragraph text, where the others either glitched out, ended early, or simply failed to match the voice. Omni voice isn't perfect; occasionally as with all TTS, you might get an artifact. Also, I don't think it has as many performance options as some of the others when describing emotions/expression. Both Breeze and Fish sounded clearer - Moss as well, though its performance is blah - but they lack some of the enunciation of Omni. Omni has better one-shot expressive quality, especially with accents. I've gotten plenty of outputs that are near usable on the first try. Another thing, Omni has the best pronunciation of original fantasy terms and concepts. I'm a sci-fi/fantasy writer, and it often gets incredibly close to nailing my intended pronunciation on words that are simply not spelled how they should probably sound. I'd say it gets it 90% of the time, while the other models have varying levels of success, but tend to average between 55-75%. I'm wondering if that's due to the large language support. That said, pronunciations aren't always consistent, but you can usually solve it with a re-roll. Anyway, hope that helps someone out. Omni has no competitor in the voice clone department, and I'm hoping a v2 is in the pipeline that maintains everything it has, but adds more varied performance and clearer audio quality.   submitted by   /u/GrungeWerX [link]   [comments]