• a complete toolkit includes Front-end, Viterbi and Baum-Welch training, State tying, Ngram decoding, Word-graph generation and Word-graph rescoring

• unicode compatible, can support the multilingual processing

• Sofs provide an abstract interface to file I/O, saving time on debugging I/O methods

• math classes provides all the needed linear algebra and mathematical operations, this makes for a well-organized environment

• commonly used data structures and dsp library are all realized so that programmer can concentrate on key algorithms