Method for an objective frequency-specific determination of an audible threshold value using an amplitude modulation following response (AMFR)

摘要

A method is described for and objective and frequency-specific determination of the audible threshold using an amplitude modulation following response (AMFR), for application in particular with infants and small children. According to the concept of the invention, instead of a single amplitude-modulated carrier, several carriers, preferably 3 or 5 carriers, having a frequency that is offset by a frequency difference &Dgr;F, preferably &Dgr;F=F_Mod or &Dgr;F=2 F_Mod, are used as a stimulus, wherein all carriers with the same modulation frequency F_Mod are modulated with an amplitude swing between 30% and 100%, preferably 100%. In addition, one or several of the amplitude-modulated carriers, which for an odd number of carriers are preferably the carriers located between the outermost carriers, can be frequency-modulated, wherein a frequency swing between 0% and 30%, preferably 20%, is selected. With these preferred parameters, the frequency specificity of the measurement is not substantially limited by the spectral width of the stimulus.