Using the FONIX 7000 to Verify Coupler and Real-Ear Performance ...

Real Ear Measurements 38
L, M. H: the real
ear targets
15. Use [F2] to select REAR 3, which uses a 65 dB SPL Speech signal.
16. Repeat Steps 13 and 14 above to measure the output of the hearing aid to an
average input.
17. Use [F2] to select REAR 4, which uses an 80 dB SPL DigSpeech signal.
18. Repeat Steps 13 and 14 above to measure the output of the hearing aid to a loud
input.
19. Use [F2] to select REAR 5, which uses a 90 dB SPL pure-tone sweep.
20. Press [START] to begin the measurement. The test will stop automatically.
Compare this curve, which is the Real Ear Saturation Response (RESR90), to
the patient’s LDLs (labeled “U”) and ensure that the curve never exceeds the
patient’s LDLs.
2.5 Performing live speech mapping to verify the output, in real-time, of a hearing aid
in response to an actual speech signal. This tool is best used as a counseling
tool for patients and their family members.
l, m, h: unamplfied
LTASS
STEP-BY-STEP
LDL
Threshold
Figure 49 – Visible Speech unaided response
1. From the Opening screen, press [F2] to enter the Real Ear Navigation screen.
2. Press [F1] in the Real Ear Navigation screen to enter the audiogram entry
screen.