Frye FONIX 7000 - Manual (Page 40)

32
FONIX 7000 Hearing Aid Analyzer
NOISE RED (TONE): Pure-tone noise reduction for real-ear measurements. See
Section 2.3.1.2.
NOISE RED (COMP): Composite noise reduction for real-ear measurements. See
Section 2.3.2.1.
SMOOTHING: Status of smoothing, which rounds off real-ear curves and
removes minor peaks. Turn it ON or OFF.
RECD MODE: Real-ear to coupler difference used in real-ear conversions such
as HL to SPL. When set to OFF, the RECD graph and table are removed from the
Audiogram Entry Screen, and the average RECD is used. CUSTOM ENTERED
will let you enter RECD values previously measured, and CUSTOM MEASURED
will let you measure the RECD.
APPROACH: The approach set in the local menu of the Real-Ear Target screen.
When set to Gain, the source type of REAR 5 in both the Real-Ear Insertion Gain
and Real-Ear SPL screens will be set to the RESET SOURCE type. When set to
SPL, the source type of this curve will be set to SHORT. This is done for per-
forming a real-ear saturation measurement at 90 dB SPL.
UNAIDED: The type of unaided curve used in real-ear measurements. A selec-
tion of AVG will set the KEMAR average. A selection of CUSTOM will use the
patient’s measured unaided response.
IG DISPLAY: Type of display used in the Insertion Gain screen. Choose between
having the lower graph display in gain or SPL (output).
TONE FILTER: The weighting used for pure-tone sweeps in real-ear measure-
ments. FLAT produces tones at each frequency with the same amount of ampli-
fication. ANSI and ICRA produce tones with higher amplification at lower fre-
quencies and lower amplification at higher frequencies, according to the ANSI
and ICRA speech weighting, respectively. AUTO uses the ANSI weighting for
pure-tone sweeps below 85 dB SPL and the FLAT weighting for sweeps at 85 dB
SPL and above. Coupler measurements with pure-tone sweeps are always FLAT
weighted.
COMPOSITE FILTER: Wide-band speech weighting used in the Composite and
Digital Speech signals. See Section 2.3.2.3.
Tone
See Section 2.3.1.1 for an explanation of all the pure-tone settings.
Tone Test Sequences
ANSI 12 dB DIST: The ANSI standard states that when measuring harmonic dis-
tortion, if the amplitude of the response curve at the second harmonic is 12 dB
greater than the amplitude of the response curve at the distortion frequency, the