1. A method for automatically generating a vocabulary entry from input acoustic data, said method comprising: performing, by a computer processor, a vocabulary entry type-specific acoustic phonetic transcription of the input acoustic data 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; performing, by the computer processor, a vocabulary entry type-specific phoneme-to-grapheme conversion, to derive the respective vocabulary entries comprising a pair of the phonetic transcription of the input acoustic data and its grapheme form; and providing a select one of the vocabulary entries to a database for use in a speech processing application; wherein the classification of vocabulary entries is carried out together with the vocabulary entry type-specific acoustic phonetic transcription in a combined step.