Conclusions Sound stimulation test is simple, convenient and economic in neonatal hearing screening, so that it is a good method for early detection of hearing disability.

CONCLUSIONS AABR test is a reliable method for newborn hearing screening, for it is quick, simple, sensitive and specific.

Results The acoumeter can reduce the proportion and degree of noise-induced hearing loss via test and calibration. and the quick screening part has been inspected for measurement.