MedRx AVANT REM (Real Ear Measurement) Installation Manual
Effective Date: 05-25-2017
24
Record Input Option
This option allows recording and playing back of the voice of the third party.
Note
: The LSM option appears on the bottom half of the display. This is so the unaided and
aided results can be displayed simultaneously for the patient and significant third party.
Note: The Operator Headphone is used by the operator to monitor the signal being received
by the probe microphone. The Patient Headphone is used by the patient during the Master
Hearing Aid function, where a simulated hearing aid activity is presented to the patient.
Master Hearing Aid
M
aster
H
earing
A
id is an alternative to using a stock hearing aid to demonstrate the benefits
of amplification to an inexperienced user. The system applies the fitting rules by default to
the patient's audiogram and simulates a hearing aid. The patient listens to this signal through
the headphones. Options for editing the gain applied to the audiogram are provided.
About the Master Hearing Aid Display
The Master Hearing Aid screen displays a graph with dB Gain on the vertical axis and
Frequency in Hz on the horizontal axis. The plot on the graph represents the gain applied to
the patient’s Audiogram. The NAL-RP is applied by default. A new rule can be selected from
the list on the right side of the display. A volume adjustment bar allows for manual
adjustment of the output level. The control panel on the right of the display provides options
for input signal source and the task icons for Normal and Simulate.
The Master Hearing Aid applies gain
separately for each ear.
If audiogram values are
entered for the left and right ear, the selected fitting rules will be applied to each ear
separately. Different rules may be entered for different ears (i.e. NAL-RP for left ear and
BERGER for right ear). If an audiogram is entered only for one ear, the gain will not be adjusted
for the opposite ear and the sound for that ear will be normal.
If
Binaural
mode is selected, the sound will be heard from both channels (left and right). If
Monaural
mode is selected, the sound will be heard only from the channel corresponding to
the active ear when the channel for the opposite ear will be muted.
Input signal
Live voice (microphone) allows you to use the right probe mic for live speech input to the
headphones. The clinician or significant third party can speak into the microphone for this
activity. Note: there is a processing delay between the input and playback. Make sure that the
client cannot hear the voice directly but only through the headset. If this is not possible, use
the Recorder (describer below) to simulate speech input.
