Audioscan Verifit 2 - Manual (Page 57)

Verifit ® User's Guide Version 4.2 © June 2015
Data entry
Threshold data and other audiometric parameters may be entered manually using a mouse or an external
keyboard. See Mouse, keyboard, and Input device operation.
To enter audiometric data manually:
1. On the Threshold, UCL or RECD entry screens, enter each data point using a mouse or an external keyboard.
Left click the mouse to enter a point. Click again to delete the point. On the keyboard, the arrow keys change
frequency and level and the ENTER key on the numeric keypad enters or deletes a point. The keyboard's
numeric keypad can also be used to type in data.
2. Click to save the data and exit the entry screen. Click to exit the entry screen without saving the
data.
Fitting to targets for soft speech
See Speechmap screen choices for setup and audiometric data entry. See Using Speechmap.
1. Follow the instructions in Speechmap screen choices to enter audiometric data and select the fitting rule.
2. Click in the "1" area to start the first test . Once the test is started, click the [Stimulus] list button to
select the stimulus type. Click the [Level] list button and select a stimulus level of 50 dB.
3. While the passage is being presented, adjust the hearing instrument's frequency shaping and gain for soft
sounds so that the middle curve (the LTASS) falls within the target range, shown by the symbols,
especially between 500 - 4000 Hz. These target symbols are automatically adjusted for the stimulus level you
select.
4. Click to signal average and store a complete passage. Repeat as necessary.
5. Click to stop the test without recording any test data.
6. Upon completion of a test recording, a colored Aided Audibar shows the SII for the aided soft speech signal.
7. The upper bar in the "1" area, shows the SII for the unaided stimulus at 50 dB SPL (the Unaided Audibar).
The difference between the unaided and aided SII score (and the associated length of their respective
'Audibars' ) visually quantifies the speech intelligibility improvement for soft speech likely provided by the
hearing instrument being fit. To further demonstrate the improvement, the unaided speech 'banana' may be
displayed by clicking
beside the Unaided Audibar.
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