Verifit
®
User's Guide Version 3.12
November 2015
SPL
Frequency Range................................200 to 8000 Hz
Test Stimuli.....frequency-modulated tone, tone burst,
.pink noise, dual-direction noise, calibrated or live speech
Freq. modulation..............sawtooth ±3% over 128 ms
Stimulus levels for tones.40 - 85 dB SPL in 5 dB steps
Test stimulus accuracy at reference mic. for tones
(2000- 8000 Hz)..........................................±3 dB SPL
Equalization Method.real-time modified pressure method
...............................................(stored for open fittings)
Frequencies per octave (swept tones).....................12
Frequencies per octave (tone burst)..........................3
Analysis bandwidth (speech, noise)............1/3 octave
Measurement accuracy at 1 kHz........................±1 dB
Measurement accuracy re 1 kHz.±1.5 dB (200-5000 Hz)
................................................±2.5 dB (5000-8000Hz)
Measurement Range...30-135 dB SPL (200-2500 Hz)
....................................30-140 dB SPL (2500-8000Hz)
ANSI S3.46 - 1997 tests available
....................................... Real-Ear Unaided Response
........................................... Real-Ear Aided Response
..................................... Real-Ear Occluded Response
............................................... Real-Ear Insertion Gain
Other tests available
............Speechmap® real-speech audibility measures
....................Real-time adaptive directional verification
...........................................On-ear harmonic distortion
...............................................On-ear spectral analysis
..............................On-ear noise reduction verification
....................On-ear feedback suppression verification
...Manual measurement of output, gain and distortion
VIEWPORT® audibility, directional, noise reduction and
feedback suppression verification
Fitting methods available
Speechmap with DSL5.0a, NAL-NL1, NAL-NL2, CAMFIT
Insertion gain with NAL-RP, NAL-NL1, Fig6, PogoII,
Berger, Libby
Sensory Loss Simulator
Simulation types...............................Linear conductive
........................Non-linear outer hair cell cochlear loss
Simulation bands......................................................65
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