Praat

Praat is a free scientific computer software program for the analysis of speech in phonetics. It has been designed and continuously developed by Paul Boersma and David Weenink of the University of Amsterdam. It can run on a wide range of operating systems, including various Unix versions, Mac and Microsoft Windows (95, 98, NT4, ME, 2000, XP, Vista). The program also supports speech synthesis, including articulatory synthesis.

Links

 * Praat: doing Phonetics by Computer — Official site
 * Praat Language Lab - Designed to help teachers and students learn to use Praat

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