A method for phonetizing text-containing data records that include graphemes includes: phonetizing the data records by converting the graphemes in the data records into phonemes, and storing the phonemes as phonetized data records; and preprocessing to condition the graphemes for the phonetization by modifying the graphemes on a language-defined and/or user-defined basis. The preprocessing of the graphemes and the conversion of the graphemes into phonemes are performed in parallel on different computation units or different portions of the computation units.