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Acapela Group
Merger of TTS companies Babeltech, Elan and Infovox. Many TTS-engines with online demonstrations.
AT&T Natural Voices
Features a line of speech synthesis products. Demos on the site.
Bitlips Speech Technologies
Finnish Speech Synthesis, offers small footprint as well as unit-selection engine. English language also available.
Cepstral Speech Synthesis
Small footprint text-to-speech synthesis suitable for mobile, handheld, and wearable computers. Provides a variety of voices and accents. Effective on line demo of speech quality.
CSLU Speech Synthesis
Center for speech synthesis research, with demos and downloads available. Has a singing voice synthesis project.
DEMOSTHeNES Speech Composer
A general-purpose multilingual and polyglot software text-to-speech (TTS) system that supports the Greek language using a wide variety of e-text sources. Free download has an open and component based architecture allowing flexibility, customization and expandability.
e-rhetor
Develops applications and systems that support the Greek language. Current products include a series of high quality Text-to-Speech products for the telecommunications and multimedia market.
E-Speech
Unusual text-to-speech synthesis offerings including name pronunciation software for speech recognition dictionaries and other custom applications.
Elan Speech
Elan Speech, dedicated global provider of text-to-speech (TTS) technologies for telecommunications, multimedia, embedded systems and mobile solutions. Provides 2 ranges of speech synthesis technologies for high quality and low footprint requirements. Many languages and voices available for various platforms and operating systems.
Emic
Hardware Voice Response Card from Parallax.
ESOPOS-Greek TTS
An unusual downloadable program for Win 95/98 that does Greek text-to-speech processing.
Fonix Corporation
Text-to-speech vendor with demo. Free clock application download for PC.
FreeTTS - Java speech synthesis
A speech synthesis system written entirely in the Java(TM) programming language. Based upon Flite: a smallrun-time speech synthesis engine developed at Carnegie Mellon University and derived from the Festival Speech Synthesis System from the University of Edinburgh and the FestVox project from Carnegie Mellon University.
French speech synthesis
LAIPTTS is a high-quality speech synthesis for French. Freely downloadable for non-commercial purposes. Small footprint of 350k. Online synthesis demo.
Hindi Text To Speech System
Bliss Intelligent Technologies offers Hindi text to speech, Hindi OCR, Hindi speech recognition and IVR systems. Based Jaipur, India.
IBM Text-to-Speech Research
IBM Text-to-Speech (TTS) Research interactive demo, multi lingual, unconstrained.
ILSP - Ekfonitis+
Ekfonitis+, Greek Text to Speech Synthesis from the Institute for Language and Speech Processing, Athens, Greece.
IMS: German Research Group
Speech synthesis group at the IMS, University of Stuttgart, Germany: Online demo, speaking metro information system, various speech synthesis example sand some downloads. Research is concentrating on getting good prosidy (inflection).
Java Applet for Speech Synthesis
Java applet/software for speech synthesis using the concatenation method. Currently developing formant synthesis version.
Loquendo
TTS manufacturer from Italy, support for many languages, online demonstration available.
Matrubhasha
A Unicode and MBROLA based software solution for text to speech synthesis (TTS) in Indian languages.
Nuance Vocalizer
TTS software. Data sheet, and demos.
Sakrament
Speech recognition and synthesis software company, particularly Russian language. Markets a product to generate personalized voice-models (voice-cloning).
SVOX Interactive Text to Speech Demo
TTS-Demo of University of Zurich. Makes an .au file of German (only) text typed at web site.
The Festvox Project
Free software tools and documentation for building new speech synthesis voices in English and other languages. Associated to Festival TTS. From Carnegie Mellon.
The MBROLA PROJECT
Multi-lingual text to speech synthesis. Free multi platform software download for research purposes.
Voiceinterconnect GmbH
Wide range of products and services for embedded electronics including echo cancellation, DSP, speaker independent recognition and text to speech.