Audioscan Verifit 2 Manuel d'utilisateur Page 50

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Verifit
®
User's Guide Version 4.2 © June 2015
Screen tour - aided screen
1. Estimated UCL, 2. 90dB target (for tones), 3. Result of test 3 (MPO), 4. LTASS targets for Test 2, 5. Long
term average speech spectrum (LTASS) result of test 2, 6. Speech peaks (99
th
percentile), 7. Speech valleys (30
th
percentile), 8. Speech intelligibility index (SII), 9. Start test, 10. Amplified speech region
On-ear or Test box mode
The Speechmap environment provides two hearing instrument verification options: On-ear measures and Test
box measures. Using on-ear mode, the stimulus is controlled by the on-ear reference microphone below the ear
and SPL in the ear canal is measured by the probe microphone. In test box mode, levels measured in the coupler
are converted to estimated ear canal levels using the RECD or WRECD values (age-appropriate average,
entered, or measured) See Speechmap screen choices . In addition, the stimulus delivered to the hearing
instrument microphone is modified to include average microphone location effects for the hearing instrument
type indicated. The screen display for both modes is the same, showing SPL, measured or simulated, in the ear
canal.
For On-ear mode: right click and click on Speechmap from the On-ear column. Review On-Ear Measures -
Setup,
For Test box mode: right click and click on Speechmap from the Test box column. Review Calibrating test box
reference microphone, Coupling the hearing instrument, Positioning the hearing instrument.
To switch modes: click on [Mode] to toggle between On-ear and Test box modes.
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