The quality also depends on the type of model. I'm not really sure what ESpeak-ng actually uses? The classical TTS approaches often use some statistical model (

The quality also depends on the type of model. I'm not really sure what ESpeak-ng actually uses? The classical TTS approaches often use some statistical model (e.g. HMM) + some vocoder. You can get to intelligible speech pretty easily but the quality is bad (w.r.t. how natural it sounds). There are better open source TTS models. E.g. check https://github.com/neonbjb/tortoise-tts https://github.com/neonbjb/tortoise-tts or https://github.com/NVIDIA/tacotron2 https://github.com/NVIDIA/tacotron2. Or here for more: https://www.reddit.com/r/MachineLearning/comments/12kjof5/d_what_is_the_best_open_source_text_to_speech/ https://www.reddit.com/r/MachineLearning/comments/12kjof5/d_...