ECHOSCAN

Connect the device to a computer (PC or Mac) via the USB cable and press «Start USB». Launch the Echosoft software. Create a new patient or select an existing one.
Install the employee in a quiet room (a soundproof booth is not required). Ask the subject to stay still and be as relaxed as possible.

Place the OAE measurement probe in the ear to be tested (called «ipsilateral» ear). Then place the sound transducer in the opposite ear (called «contralateral»).

From the Echosoft software, start the automatic measurement to determine the parameters specific to each subject. This step should be performed once per ear tested. It allows fast measurement of the amplitude of OAE responses to determine the frequency and level of stimulation to be used to ensure optimal reflex threshold measurements (step 4).

Select the type of measurement: pre or post exposure.
The search for the trigger threshold takes place in a few minutes; it is characterized by the emission of sounds of increasing intensity in the contralateral ear.
The reflex is detected by measuring the amplitude variations of OAE in the ipsilateral ear. At any time, it is possible to pause or stop the test.

The Echosoft software makes it possible to consult the measurements corresponding to the different intensities tested.
The color marker indicates when the reflex is triggered (green) or not (red). The result of the measurement can also be printed and archived on the computer.

Echoscan® calculates the auditory fatigue at the workplace by making the difference between the trigger thresholds measured before and after exposure of the employee:
Fatigue = «post-expo threshold» – «pre-expo threshold»
This value allows to automatically rank auditory fatigue
in three classes:
Fatigue proved (Red);
Auditory fatigue possible (Orange);
Absence of fatigue (Green).