28. The computer-readable storage medium of claim 26 , wherein the orthographic vector space comprises the vector representation of the out-of-vocabulary word and the orthographic anchors corresponding to in-vocabulary words.
26. A computer-readable storage medium storing computer-executable instructions comprising: an instruction to receive pronunciation data for an out-of-vocabulary word, the pronunciation data comprising phoneme sub-strings selected from candidate phoneme strings have pronunciation data associated with orthographic anchors that are close to a vector representation of the out-of-vocabulary word in an orthographical vector space defined by a dictionary; and an instruction to reproduce the pronunciation data for the out-of-vocabulary word as an audible signal.