18. The computer-implemented method of claim 15 further comprising using the position-dependent phonetic language model to identify a sequence of position-dependent phonetic tokens from a speech signal.
18. The computer-implemented method of claim 15 further comprising using the position-dependent phonetic language model to identify a sequence of position-dependent phonetic tokens from a speech signal. 19. The computer-implemented method of claim 18 further comprising using the sequence of position-dependent phonetic tokens identified from the speech signal to annotate a lexicon with a pronunciation for at least one symbol that is not found in a written language.