Wrecd Results - audioscan verifit User Manual

curve is negative and unstable in the low frequencies, check the seal of the foam tip. Increase the tip size
and/or apply a lubricant to the foam tip to improve the seal. If the WRECD curve deviates more than 10 dB
from the average in the 4 - 6 kHz region, check for proper probe placement and possible blockage of the tube
by the foam tip or cerumen.
8. When these curves are stable, select
For comparison purposes, the age-related average WRECD is shown as a dotted curve on the screen. If you have
accessed WRECD from the main menu, you may click the Age box to change the age for this reference curve.

WRECD results

The WRECD measurement screen shows the response of the WRECD transducer in the 0.4cc coupler (1) and in
the real ear (2). The difference between these curves is the WRECD (3). The age-appropriate average WRECD
is shown for reference (4).
Since WRECD uses the 0.4cc coupler rather than 2cc, it is normal to see negative numbers since the volume of
the wideband coupler more closely matches that of an ear. A WRECD with large negative slope in the low
frequencies may indicate a poor seal between the foam tip and the ear canal, or an open vent in an earmold. A
negative WRECD above 1 kHz often indicates a blocked or pinched probe tube. See WRECD facts.
Verifit ® User's Guide Version 4.8 © November 2016
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