Distortion product otoacoustic emission (DPOAE) recovery after moderate sound exposure as a function of time

摘要

The amplitude of distortion product otoacoustic emissions (DPOAE) decreases temporarily after exposure to a sound of moderate level. These changes show similarities to the changes observed in absolute hearing thresholds after similar sound exposures. To be able to assess changes over time across a broad frequency range, a detailed model of the recovery’s time characteristics is needed. In the present study, the methodological aspects needed in order to monitor changes in DPOAEs obtained from human subjects with high time resolution are presented together with preliminary results collected after short duration tonal exposures.