MARY is an open-source, multilingual Text-to-Speech Synthesis platform written in Java. It supports German, British and American English, Telugu, Turkish, and Russian. 
 Demo: <A HREF="http://mary.dfki.de:59125/" target="_blank">http://mary.dfki.de:59125/</A>

MARY is an open-source, multilingual Text-to-Speech Synthesis platform written in Java. It supports German, British and American English, Telugu, Turkish, and Russian.

MARY - Text-to-Speech System

Leon is an open-source personal assistant who can live on your server. He does stuff when you ask him for. You can talk to him and he can talk to you. You can also text him and he can also text you. If you want to, Leon can communicate with you by being offline to protect your privacy.

Leon - Your open-source personal assistant

Coqui TTS is a library for advanced Text-to-Speech generation. It's built on the latest research, was designed to achieve the best trade-off among ease-of-training, speed and quality. Coqui TTS comes with pretrained models, tools for measuring dataset quality and already used in 20+ languages for products and research projects.
 
Features: 
<ul style="margin-bottom: 16px; padding-left: 2em;"><li style="">High-performance Deep Learning models for Text2Speech tasks.<ul style="padding-left: 2em;"><li>Text2Spec models (Tacotron, Tacotron2, Glow-TTS, SpeedySpeech).</li><li style="margin-top: 0.25em;">Speaker Encoder to compute speaker embeddings efficiently.</li><li style="margin-top: 0.25em;">Vocoder models (MelGAN, Multiband-MelGAN, GAN-TTS, ParallelWaveGAN, WaveGrad, WaveRNN)</li></ul></li><li style="margin-top: 0.25em;">Fast and efficient model training.</li><li style="margin-top: 0.25em;">Detailed training logs on the terminal and Tensorboard.</li><li style="margin-top: 0.25em;">Support for Multi-speaker TTS.</li><li style="margin-top: 0.25em;">Efficient, flexible, lightweight but feature complete&nbsp;Trainer API.</li><li style="margin-top: 0.25em;">Ability to convert PyTorch models to Tensorflow 2.0 and TFLite for inference.</li><li style="margin-top: 0.25em;">Released and read-to-use models.</li><li style="margin-top: 0.25em;">Tools to curate Text2Speech datasets underdataset_analysis.</li><li style="margin-top: 0.25em;">Utilities to use and test your models.</li><li style="margin-top: 0.25em;">Modular (but not too much) code base enabling easy implementation of new ideas.</li></ul>

Coqui TTS is a library for advanced Text-to-Speech generation. It's built on the latest research, was designed to achieve the best trade-off among ease-of-training, speed and quality.  Coqui TTS comes with pretrained models, tools for measuring dataset quality and already used in 20+ languages for products and research projects.



Coqui - Advanced Text-to-Speech Library

SpeakRight is an Java framework for writing speech recognition applications in VoiceXML. Dynamic generation of VoiceXML is done using the popular StringTemplate templating framework. Although VoiceXML uses a similar web architecture as HTML, the needs of a speech app are very different. SpeakRight lives in application code layer, typically in a servlet. The SpeakRight runtime dynamically generates VoiceXML pages, one per HTTP request. 
 Applications are written in Java using SpeakRight's extensible classes.

SpeakRight is an Java framework for writing speech recognition applications in VoiceXML. Dynamic generation of VoiceXML is done using the popular StringTemplate templating framework. Although VoiceXML uses a similar web architecture as HTML, the needs of a speech app are very different. SpeakRight lives in application code layer, typically in a servlet. The SpeakRight runtime dynamically generates VoiceXML pages, one per HTTP request.

SpeakRight Framework - Helps to build Speech Recognition Applications

FreeTTS is a speech synthesis system written entirely in the Java. It is based upon Flite, a small run-time speech synthesis engine developed at Carnegie Mellon University. Flite is derived from the Festival Speech Synthesis System from the University of Edinburgh and the FestVox project from Carnegie Mellon University. FreeTTS supports  a subset of the JSAPI 1.0 java speech synthesis specification.

FreeTTS - Speech Synthesizer in Java

The Festvox project aims to make the building of new synthetic voices more systemic and better documented, making it possible for anyone to build a new voice. Festvox is the base for most of the Speech Synthesis libraries.

Festvox - Builds New Synthetic Voices

Festival offers a general framework for building speech synthesis systems as well as including examples of various modules. It offers full text to speech through a APIs via shell and though a Scheme command interpreter. It has native support for Apple OS. It supports English and Spanish languages.

Festival - Speech Synthesis System

Kaldi is a Speech recognition research toolkit. It is similar in aims and scope to HTK. The goal is to have modern and flexible code, written in C++, that is easy to modify and extend. 

Kaldi - Speech Recognition Toolkit

eSpeak is a compact open source software speech synthesizer for English and other languages. eSpeak uses a formant synthesis method. This allows many languages to be provided in a small size. It supports SAPI5 version for Windows, so it can be used with screen-readers and other programs that support the Windows SAPI5 interface. It can translate text into phoneme codes, so it could be adapted as a front end for another speech synthesis engine.

eSpeak - Text to Speech

Flite (festival-lite) is a small, fast run-time synthesis engine developed at CMU and primarily designed for small embedded machines and/or large servers. Flite is designed as an alternative synthesis engine to Festival for voices built using the FestVox suite of voice building tools. 

Flite - Fast Run time Synthesis Engine

Speect is a multilingual text-to-speech (TTS) system. It offers a full TTS system (text analysis which decodes the text, and speech synthesis, which encodes the speech) with various API’s, as well as an environment for research and development of TTS systems and voices.

Speect - Multilingual text-to-speech (TTS) system

Talkie is a Text-to-speech browser extension button. It lets you listen to the selected text on any part of a page — short snippets or entire news articles. Just highlight what you want to hear read aloud and hit play.
Automatically detects the text language per-page, and chooses a voice in the same language to match it. Support is available for Chrome and Firefox.

Talkie - Text-to-speech browser extension button

 p5.speech is a JavaScript library that provides simple, clear access to the Web Speech and Speech Recognition APIs, allowing for the easy creation of sketches that can talk and listen. It consists of two object classes (p5.Speech and p5.SpeechRec) along with accessor functions to speak and listen for text, change parameters (synthesis voices, recognition models, etc.), and retrieve callbacks from the system. Speech recognition requires launching from a server (e.g. a python simpleserver on a local machine).

p5.speech - Web Audio Speech Synthesis / Recognition for p5.js

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