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eSpeak

eSpeak

eSpeak is a compact, open source software speech synthesizer for English and other languages. It uses a formant synthesis method, providing many languages in a small size.

This software produces good quality English speech. It uses a different synthesis method from other open source text to speech (TTS) engines, and sounds quite different. It is perhaps not as natural or "smooth", but some find the articulation clearer and easier to listen to for long periods.

It can run as a command line program to speak text from a file or from stdin.

Projects using eSpeak include NVDA, Ubuntu and OLPC, and it has also been used by Google Translate.

eSpeak is derived from the "Speak" speech synthesizer for British English for Acorn RISC OS computers which was originally written in 1995 by Jonathan Duddington.

 eSpeak 1.48.04

Price
Free to download

Size
2.8MB
License

GNU GPL v3

Developer
Jonathan Duddington

espeak-gui - Siegfried-Angel Gevatter Pujals, Joe Burmeister

Website
espeak.sourceforge.net

System Requirements
PortAudio

Support Sites:
Forums, Mailing List, SourceForge Project Page

Selected Reviews:
makeuseof.com

Features include:

  • Two methods of synthesis: the original eSpeak synthesizer and a Klatt synthesizer each using different types of formant synthesis
  • Includes different Voices, whose characteristics can be altered
  • Can produce speech output as a WAV file
  • Supports Speech Synthesis Markup Language (SSML) (not complete), and also HTML
  • Compact size. The program and its data, including many languages, totals about 1.4 Mbytes
  • Can be used as a front-end to MBROLA diphone voices, eSpeak converts text to phonemes with pitch and length information
  • Can translate text into phoneme codes, so it could be adapted as a front end for another speech synthesis engine
  • Potential for other languages. Several are included in varying stages of progress. Help from native speakers for these or other languages is welcome
  • Development tools are available for producing and tuning phoneme data
  • Supports languages: Afrikaans, Albanian, Armenian, Cantonese, Catalan, Croatian, Czech, Danish, Dutch, English, Esperanto, Estonian, Finnish, French, Georgian, German, Greek, Hindi, Hungarian, Icelandic, Indonesian, Italian, Kannada, Kurdish, Latvian, Lojban, Macedonian, Malayalam, Mandarin, Norwegian, Polish, Portuguese, Romanian, Russian, Serbian, Slovak, Spanish, Swahili, Swedish, Tamil, Turkish, Vietnamese, Welsh

eSpeak-gui in action

Return to Speech Tools Home Page

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Last Updated Tuesday, March 25 2014 @ 02:07 PM EST


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