1. A speech recognition system for identifying words from a sound block, the speech recognition system comprising: at least one processor programmed to: determine word scores for words in a word graph by applying a phonemic language model to at least one phoneme of the words in the word graph; derive a best path through the word graph based, at least in part, on the word scores determined for the words in the word graph; and output a speech recognition result including the words in the word graph corresponding to the best path.