Sphinx-4 is a state-of-the-art SPEech recogNition system written entirely in the JavaTM programming language. It was created via a joint collaboRATion between the Sphinx group at CarnegIE Mellon UniversIty, Sun Microsystems LaboraTories, Mitsubishi Electric Research Labs (MERL), and Hewlett Packard (HP), with contributions from the University of California at Santa Cruz (UCSC) and the Massachusetts Institute of Technology (MIT).
Sphinx-4 started out as a port of Sphinx-3 to the Java programming language, but evolved into a recognizer designed to be much more Flexible than Sphinx-3, thus becoming an excellent platform for speech research.