[Calculation of percentage hearing loss with pocket computers].

The computation of percentage hearing loss usually uses tables giving the values. Using such tables an incorrect reading off or a miscalculation is not infrequent. A computerprogram for pocket computers in BASIC is presented, which allows to compute the percentage hearing loss according the tables for speech audiometry by Boenninghaus und Röser introduced 1958 and 1973. Additionally the computation of percentage hearing loss using the method for pure tone audiometry by Röser (1973) is possible. Some peculiarities of the diverse tables are discussed.