1. A method for automatically generating vocabulary entry from input acoustic data, said method comprising the steps of: performing a vocabulary entry type-specific acoustic phonetic transcription and a classification of vocabulary entry types based on phonetic structure, wherein the classification of vocabulary entries is carried out in accordance with a number of predetermined types; and performing a vocabulary entry type-specific phoneme-to-grapheme conversion, to derive the respective vocabulary entries comprising a pair of a phonetic transcription and its grapheme form.