User guide
BABYS
C
REEN
ECH001XN121-A4 – 07/2022
16
Chapter 2. General information about using BABYSCREEN
2.3 Advanced configurations
Config DP-gram :
Access to the DP-gram measurement settings
Config TEOAE :
Access to the TEOAE measurement settings
DP Frequency Config :
set the frequency gap between the 2 stimulation frequency F1 and F2 for
Shift-OAE
and
DPgram
measurement
.
The value set is the ratio between F1 and F2 (1.2 by default) :
𝐹1(𝐻𝑧) =
𝐹2(𝐻𝑧)
𝑋
The "2 *
F
1 –
F
2" and "2 *
F
2 –
F
1" check-boxes allow to choose which distortion product will be investigated in
the
Shift-OAE
and
DP-gram
curves
2.3.1.1
Config DP-gram
The DPgram configuration window allows you to mod-
ify the test parameters (test frequencies and difference
between L1 and L2 intensities) and customize valida-
tion criteria. Changes to the protocols should only be
made by qualified personnel.
Frequencies
List of frequencies that will be scanned (from the highest to the lowest)
1kHz is not recommended for screening, due to its sensitivity to noise
Power : L1= L2 +
The difference in intensity between L1 and L2 in dB SPL (L1 ≥ L2)
Power L2 (Screening)
The intensity of L2 in dB SPL in "screening mode" if "Protected access to settings" is
activated. Otherwise, the intensity is adjusted directly in the test window
Max Test Time
Maximum test duration for each frequency in "screening mode" in case of no response
Min SNR
Minimum value (in dB) of the signal level compared to the noise level to consider the
distortion product (DP) present (detected) at each frequency
Min DP Level
Minimum value (in dB) of the signal level to consider the distortion product (DP) as
present (detected) at each frequency
Freqs Nb for PASS
The minimum number of frequencies with DP present (detected) required to determine
"PASS" in screening mode
2.3.1.2
Config TEOAE
The TEOAE configuration window allows you to mod-
ify the validation criteria for the "
screening mode
".
There are two ways to validate the presence of OAE:
- Validation by the number of frequencies detected
for a given value of the signal-to-noise ratio.
- Validation by statistical analysis.
For this second case, the detection is based on the cor-
These two parameters are available for
Shift-OAE
and
DPgram
.
If you are not familiar with the settings and how modifying them can affect the test results, do not try to
change them. Incorrect settings can make future measurements inoperable and irrelevant.
If you have any doubt about the configuration, click on "
Reset data
" to return the factory configuration
and "
Confirm
”.
If you are not familiar with the settings and how modifying them can affect the test results, do not try to
change them. Incorrect settings can make future measurements inoperable and irrelevant.
