[Description of hearing experiments by means of a simple, system-theoretical model].

It is shown that sets of quantities that are investigated in hearing-experiments, namely sounds and sound-sensations, can be referred to as input- and output-sets of conciously percepting systems. A simple system-theoretic model of a conciously percepting system is given, the set-functions between input and outputs are derived. The basic steps to measure these set-functions and to estimate accompaning possible errors are discussed. The results can be generalized on perceptional experiments concerning other senses than hearing.