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Verifit®User's Guide Version 3.12  May 2015
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On-ear feedback test...........................................................................................................................................................74
On-ear noise reduction test.................................................................................................................................................74
On-ear manual control........................................................................................................................................................75
Sound level meter using on-ear microphones....................................................................................................................76
Occlusion Effect Test.........................................................................................................................................................78
Occlusion effect measurement...........................................................................................................................................78
RECD measurement...........................................................................................................................................................79
Calibration of RECD transducer........................................................................................................................................79
Measure RECD ..................................................................................................................................................................80
RECD results......................................................................................................................................................................81
ANSI S3.46(2013) RECD .................................................................................................................................................82
RECD protocols..................................................................................................................................................................82
RECD facts.........................................................................................................................................................................84
Insertion Gain.....................................................................................................................................................................85
Insertion gain in SPL..........................................................................................................................................................85
Insertion gain in HL...........................................................................................................................................................86
Audiometric data entry.......................................................................................................................................................86
REUR measurement procedure..........................................................................................................................................87
REAR measurement procedure..........................................................................................................................................88
SII calculation in Insertion gain.........................................................................................................................................89
CROS fitting using Insertion gain......................................................................................................................................89
Speechmap.........................................................................................................................................................................91
Speechmap facts.................................................................................................................................................................91
DSL 5.0 in Speechmap.......................................................................................................................................................91
DSL 5.0 changes.................................................................................................................................................................92
NAL-NL1 in Speechmap....................................................................................................................................................92
NAL-NL2 in Speechmap....................................................................................................................................................92
Camfit in Speechmap.........................................................................................................................................................93
Using Speechmap...............................................................................................................................................................93
Speechmap Setup................................................................................................................................................................94
Screen tour - unaided screen..............................................................................................................................................95
Screen tour - aided screen..................................................................................................................................................96
On-ear or Test box mode....................................................................................................................................................96
SII calculation in Speechmap.............................................................................................................................................97
Using custom stimuli in Speechmap..................................................................................................................................97
Creating WAV files for Speechmap..................................................................................................................................99
Speechmap Fitting Procedures........................................................................................................................................101
Assessment data entry......................................................................................................................................................101
Assessment data choices..................................................................................................................................................102
Fitting to targets for soft speech.......................................................................................................................................103
Fitting to targets for loud sounds.....................................................................................................................................104
Fitting to targets for mid-level speech.............................................................................................................................104
Open fittings in Speechmap.............................................................................................................................................105
Verifying Frequency Compression/ Frequency-Lowering Hearing Instruments in Speechmap....................................105
FM fitting and verification...............................................................................................................................................107
CROS fitting in Speechmap.............................................................................................................................................108
T-Loop fitting and verification in Speechmap................................................................................................................109
Speechmap Technical Details..........................................................................................................................................112
Speechmap stimuli...........................................................................................................................................................112
Stimulus levels..................................................................................................................................................................112
Microphone location effects.............................................................................................................................................113
Deep insertion compensation...........................................................................................................................................114
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