Channel 1 and Channel 2
The sound wave icon and the VU meter indicate when a stimulus is
being presented. The sound wave icon and VU meter will remain active
through the duration of the stimulus.
The level of the stimulus will be displayed in the color of the ear that has
been selected for each channel (red for right, blue for left and black for
binaural). At extreme levels, the hearing level will be highlighted in
yellow. When the attenuator has reached its upper limit (per transducer),
the level will flash and the NR symbol will appear.
The stimulus source (Microphone, INT/EXT A or INT/EXT B), ear
selected, and transducer selected are displayed at the bottom of the
channel windows. The signal type, ear and transducer may be selected
with the mouse to display a drop down list of choices for selection.
Scoring Window
This scoring window displays the speech scores in a percentage value.
The scores are calculated when using the Correct/Incorrect buttons on the
front panel of the instrument. The left side indicates the number of
correct responses over the total presented. The right side converts this
into a percentage. The lower part indicates the current word being
presented. If a patient response switch is used, a gray bar will appear
below the current word when the patient depresses the button.
NOTE:
When using internal .Wav files, the Clear button is inactive while the
stimulus is being presented.
On Screen Data Login
Pure Tone Average (PTA) for air and bone conduction is automatically
populated from the tone test screen if the data is available. The
audiologist may quickly compare the results of the PTA with the results
of the Speech Reception Threshold (SRT) or Speech Detection
Threshold (SDT) to rule out the possibility of pseudohypoacusis.
Speech Intelligibility Index (SII) is automatically populated from the
tone test screen if the data is available. The audiologist may quickly
quantify the speech information that is audible to the patient and
compare to the word recognition score (WRS). There is a high
correlation between SII and WRS.
Speech Test Results
The Speech Test Results Table displays the speech information for the
tests that have been stored. To store a speech test result the Store button
is pressed on the instrument. The results table stores the ear, test type
speech source, the word list presented, if an aid (hearing aid or cochlear
implant) was used by the patient, the percentage correct, the HL level