Maico MA 33 Operation Manual page 40

Operation Manual MA 33
As soon as the patient responds to the tone and presses the patient response switch, press
the Enter key or the center mouse button to confirm the response. This is displayed in the
audiogram as a red marking O for the right ear and as a blue marking X for the left ear.
The hearing threshold can be measured several times, and each new measurement
overwrites the previous one. The measured values are automatically incorporated into
the threshold curve, if only one intermediate frequency is sampled.
Pulse Tone
If required, the test can also be performed with a pulsed tone. Click on the Pulse tone
button and the pure tone will change to a pulsing tone.
Warble Tone
If required, the test can also be performed with a warble tone. Click on the Warble tone button
and the pure tone will modulate. The warble tone can also be pulsed as described above.
5.5.2.3 Automatic Threshold Test (Hughson-Westlake)
Another form of threshold search is using the Hughson-Westlake automatic tests
procedure, also known as the "10 down, 5 up" method.
To open the automatic test screen click the Autotest button (Figure 43).
Figure 43
Before starting the test it is useful to explain following directions regarding the hearing
test to the test person: The test person will hear a series of soft "beeps" and should listen
very carefully. The test person should press and release the response button as soon as
he/she hears the sound, even if it is very soft. The test person will hear directions given
through the earphones, and should listen to those carefully when they are presented.
8100092 Rev. 9 38 19/08/2019