SPTK is a suite of speech signal processing tools for UNIX
environments, e.g., LPC analysis, PARCOR analysis, LSP analysis,
PARCOR synthesis filter, LSP synthesis filter, vector
quantization techniques, and other extended versions of them.
MARF is a general cross-platform framework with a collection of algorithms for audio (voice, speech, and sound) and natural language text analysis and recognition along with sample applications (identification, NLP, etc.) of its use, implemented in Java.