ChatTTS vs Altered Studio

ChatTTS is an open-source text-to-speech model built for dialogue. The 2Noise team trained it on over 100,000 hours of Chinese and English speech so it sounds natural in back-and-forth conversation, not just scripted narration.

What sets it apart is prosody control at a granular level. The model can layer in laughter, pauses, and interjections, and it handles multiple speakers in a single session. That makes it a fit for LLM assistants, conversational audio, and dialogue-heavy multimedia.

Developers install it via pip or clone the GitHub repo. The open-source release on Hugging Face is a 40,000-hour base model under AGPLv3+. The team positions it for research and dialogue use cases, with contact at [email protected] for roadmap questions.

Altered Studio morphs recorded or live speech into curated or custom voices for media production and real-time calls. Its speech-to-speech engine runs in the browser or locally on Windows and Mac, with a separate Real-Time Pro app for gaming, call centers, and voice restoration during video calls.

Most voice changers trade quality for latency or the reverse. Altered splits the stack: media production morphing targets recording quality on GPUs with post-edit refinements, while Real-Time Pro uses 1 to 4 CPU cores for low-latency skins, accent translation, and Euphonia support for dysphonia and disfluencies.

Podcasters, game studios, and call-center teams use it to dub multi-character scenes, swap accents on live calls, and clean noisy dialogue. The Studio page offers transcription in 75+ languages, translation, and text-to-speech voice-over in 70+ languages from major providers in one editor.