1. A speech recognition system for identifying words from a sound block ( 40 ), the speech recognition system comprising: word recognizer ( 49 ) for deriving a best path ( 47 ) through a word graph ( 46 ), each word having assigned a word score and a phonemic transcription, and wherein words are assigned to the sound block based on the best path, wherein the word score of each word in the word graph includes the word score as obtained from applying a phonemic language model ( 36 ) to each word of the word graph.