eSpeak: Speech Synthesizer
eSpeak is a compact open source software speech synthesizer for English and other languages, for Linux and Windows. http://espeak.sourceforge.net eSpeak uses a "formant synthesis" method. This allows many languages to be provided in a small size. The speech is clear, and can be used at high speeds, but is not as natural or smooth as larger synthesizers which are based on human speech recordings. eSpeak is available as: A command line program (Linux and Windows) to speak text from a file or from stdin.
Related: audio recursos
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