Otodynamics Otoport Flex - Mode of Operation and Technical Specifications; DPOAE Test Parameters

Otoport OAE+ABR
User Manual for Otoport DP+TE model
193
Mode of operation
26 Mode of operation
26.1 DPOAE test
Parameter Description
Checkt stimulus
80µs positive broadband square wave pulse with an intensity of
64dB pe (peak equivalent) in a 1cc cavity.
Sample rate 25.6kHz
Sample bu󰀨er 80ms (gives 2048 points)
FFT frequency bin
25Hz
DP Noise calculation
DP noise from the ve spectral points above and the ve points
below the DP frequency. In the ‘Rapid’ noise mode, the mean of
these points gives the noise level. In the ‘Standard’ noise mode
the mean of these points plus two standard deviations gives the
noise level.
Noise rejection calculation
The noise level for noise reject is calculated from the di󰀨erence
between consecutive 80ms samples.
Frequency ratio
F2= 1.22 F1