The stimuli used for acoustic stimulation consist of several carriers all of which are amplitude-modulated with the same modulation frequency, and whose frequencies are relatively displaced by a difference. The objective Amplitude Modulation Following Response (AMFR) uses several statistical methods for objective proof. AMFR counts as proof if at least two of the tests give a significant result.
Method for the objective frequency specific determination of the hearing threshold by means of amplitude modulation following response (AMFR)