Objective: To investigate the normal value of DPOAE and effect of intensity differ of probe tone.
Method: 30 subjects (60 ears) age from 17 to 40 were examined in this article, and the amplitude of DPOAE were measured when using L1 = L2 = 70 dB SPL and L1 = 70 dB SPL, L2 = 65 dB SPL.
Result: DPOAE was recorded in 100%. The amplitude of DPOAE when using L1 = 70 dB SPL, L2 = 65 dB SPL is larger than the amplitude of DPOAE when using L1 = L2 = 70 dB SPL.
Conclusion: Those results give us useful information for clinic.