In standardizing acoustic stimuli of electrocochleography and brainstem response audiometry, a realistic method for measuring transient tone stimuli as tone pips or clicks should be established as often pointed out. In this study, the frequency-specificity of the acoustic stimuli was evaluated by means of a real-time digital frequency analyser with the KEMAR manikin constructed as an ear simulator for hearing aid and related acoustic research. In addition, the effect of the frequency-specific tone pips on auditory brainstem responses was studied. The application of the KEMAR manikin could reproduce and simulate conditons of realistic stimulation in electric response audiometry. In particular, tone pips with a rise and fall time of 3 cycles seemed favorable both for the frequency specificity of the acoustic stimuli and for the neurophysiological synchronization.
