Otodynamics Otoport Flex - TEOAE Test Mode Settings

CHAPTER FIFTEEN
Conguration
122
Conguration
15.2.4 TEOAE
The TE Quick setting is used to switch the TE mode on (default) and o󰀨.
When on, the mode will provide a Quickscreen click stimulus of 84dB. If it
is set to o󰀨, this test mode will not be available.
Mode
Mode sets the pass criteria for screening.
The Wide Band setting requires a signal to noise ratio (SNR) of 6dB over
the 841-4757Hz frequency range in order to meet the pass criteria.
The Narrow setting also requires a signal to noise ratio (SNR) of 6dB
over the 841-4757Hz frequency range in order to meet the pass criteria.
However this setting uses a lter of 1.6-3.2kHz and a stimulus response
window 4-10ms to reduce the impact of environmental noise on the
recording. This makes this setting particularly appropriate for screening in
noisy environment.
The Any 2 Bands, Any 3 Bands and Any 4 Bands settings require a 6dB
SNR and a minimum signal level of -5dBSPL in each of the stated number
of half octave frequency bands to meet the pass criteria.
In order to meet the pass criteria, all test modes require a minimum total
(wide band) signal level of 0dBSPL and the amount of data collected to
reach the minimum number of sweeps.