Hearing Screening Systems (Technical Manual)
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Frequencies for pass, %. Change range – from 50% up to 100%.
Point time, s. Change range – from 0,5 s up to 5 s.
These settings are stored in the templates. The screening system provides three de-
fault templates – the set of specified parameters: “Noisy (screening)”, “Normal
(screening)”, “Quiet (standard)”. To select the template, enter the “Settings” menu, se-
lect “DPOAE settings” menu using “up” and “down” arrow buttons and press “Change”
button. After that the window represented in the Fig. 34 will appear. Switch the tem-
plate using “right” and “left” arrow buttons.
Please pay attention that the default templates can not be changed and/or removed.
To add the template, press “New” button, enter the name of a new template and set it
up. If you want to remove the template, press “Delete” button.
Fig. 34. DPOAE test parameters setting.
To change the settings in your template, select the required setting using “up” and
“down” arrow buttons and change the value by 1 unit by pressing the arrow buttons
“left” (-1) and “right” (+1) or by 10 units by pressing “-10” and “+10” buttons. The “-10”
and “+10” buttons are not used for the “Mode” setting.
The “Mode” setting allows choosing the number of frequencies for testing. In the
“Screening” mode there are 4 of them – from 1,4 up to 5,7 Hz, in the “Standard” mode
there are 8 of them – from 1,4 up to 8 kHz, the “Extended” mode provides 12
frequencies – from 0,55 up to 8 kHz.
The “Volume level 1, dB SPL” and “Volume level 2, dB SPL” settings allow specifying
the intensity of the testing tone on f1 and f2 frequencies correspondingly.
The “Noise level, dB SPL” setting specifies the threshold of the artifacts rejection by
noise level.
