Open-Source Text-to-Speech (TTS)

There are several open-source Text-to-Speech (TTS) systems available, each with unique features and capabilities. Here's a list of some well-known open-source TTS projects:

• Mozilla TTS - An open-source TTS engine based on deep learning techniques, developed by Mozilla as part of their Common Voice project. It focuses on creating natural-sounding speech using neural networks.
• MaryTTS - A modular, multilingual TTS system developed at the Technische Universität Darmstadt. It supports several languages and is known for its flexibility and quality.
• eSpeak - A compact open-source software speech synthesizer for English and other languages, known for its simplicity and small footprint.
• Festival Speech Synthesis System - Developed by the University of Edinburgh, Festival offers a general framework for building speech synthesis systems as well as including examples of various modules.
• Tacotron 2 (by Google) - Although not a complete TTS system on its own, Tacotron 2 is an open-source neural network architecture for speech synthesis. Google has published the research and some implementations are available.
• Mimic (by Mycroft AI) - Mimic is an open-source TTS project that can produce high-quality speech. It has several versions, with Mimic 3 focusing on deep learning models.
• Flite - A lightweight speech synthesis engine developed at Carnegie Mellon University, designed to run small devices.
• ESPnet-TTS - Part of the ESPnet project, this is a neural network-based TTS system that aims to produce high-quality speech synthesis.

These projects vary greatly in terms of complexity, quality, and the languages they support. Some are more research-oriented, while others are aimed at end-users or developers looking to integrate TTS into their applications.