Micro Audiometrics ES3 - Test Procedure; Test Protocol

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Test Procedure
1) Instruct the patient to press the response button whenever a tone is heard.
2) Position the headphones over the patient’s ears.
3) From the manual audiometry screen, press key {1} to begin the automatic
threshold exam.
Test Protocol
1) The automatic test begins at the level and frequency indicated in the
automatic threshold audiometry settings.
If the Faster Method setting is selected:
The stimulus increment size is set to the Gross Increment size in the
automatic threshold audiometry settings. The increment size remains at
this setting until the first response by the patient to a stimulus. After the
first response, the increment step size is set to the Increment Amount in
the automatic threshold settings. The stimulus decrement size is set to
the Gross Decrement size in the automatic threshold audiometry
settings. The decrement size will remain at this setting until the first
negative response by the patient to a stimulus. After the first negative
response, the decrement size is set to the Decrement Amount in the
automatic threshold settings.
If the Faster Method setting is not selected:
The stimulus increment size is set to the Increment Amount and the
decrement size is set to the Decrement Amount in the automatic
threshold settings.
2) After each stimulus presentation, ES3 will either decrease the intensity
level by the decrement size if the patient responded or increment the
intensity level by the increment size if the patient did not respond.
3) The number of consecutive ascending positive responses at a given level
is selectable in the automatic threshold audiometry settings. An ascending
positive response is a positive response to a stimulus presentation that
immediately follows a negative response to the previous stimulus
presentation.
4) If the stimulus is presented at the maximum level for a given frequency and
a negative response is received by the ES3, the threshold for the
frequency is set to a No Response (NR) and the test continues with the
next frequency selected for testing.
5) Testing for the next frequency in the test sequence will automatically start
at an intensity level 10 dB HTL greater than the threshold for the previous
frequency. However, the test level will not exceed the maximum starting
level contained in the Level Override setting in the automatic threshold
audiometry settings. Additionally, if both the test storage and baseline
comparison upgrades are installed, the Use Baseline setting specifies that
testing will begin at the threshold for the baseline test if one exists and is
loaded.