In subjects that have been drinking alcohol, for example, emissions are deadened. And different drugs alter the amplitude of OAEs, as do ear infections or wax build-up.
2
测定了UHM-WPE/HDPE复合材料在拉伸载荷作用下的声发射(AE)振幅信号。
UHMWPE/HDPE composite materials were experimented to determine the event amplitude content of AE signals under tensile loads.
Methods Auditory brainstem response(ABR)and otoacoustic emission of distortion products(DPOAE)were assayed to 20 guinea pigs, then variant hair cells were observed and counted.