Otodynamics Otoport Flex - Page 123

Otoport OAE+ABR
User Manual for Otoport DP+TE model
123
Conguration
The xed and congurable test parameters are summarised in the following
tables:
Congurable test parameters
Name Any 2 Any 3 Any 4 Wide Narrow
Min pass
bands 2 3 4 None None
Min total (wide
band) SNR None None None 6dB 6dB
Min SNR per
pass band 6dB 6dB 6dB None None
Filter (Hz) 1189-4757 1189-4757 1189-4757 1189-4757 1600-3200
Response
Window (ms) 2-5-12.5 2-5-12.5 2-5-12.5 2-5-12.5 4-10
Fixed test parameters
Min sweeps (NLo) 30
Min total (wide band) OAE signal 0dBSPL
Min band signal -5dBSPL
Stimulus level 84 +/- 1dB pe
Max test time 300 seconds
Max low noise (NLo) 260 sweeps of 16 stimulus presentations
sweeps averaged
Ring reject -20dB
Max ratio of stimulus peak to the level 3ms after stimulus presentation.
Stimulus ring can hamper accurate OAE measurement
Input lter 1600-3200Hz - narrow mode only
or 1189Hz - 4757Hz
The attenuation at these frequencies is 3dB. Attenuation increases by 80dB/decade
below and 40dB/decade above these frequencies
The default setting is Any 2 Bands. However, it is recommended that you
carefully choose pass criteria which suit your program requirements.