Advanced Bionics Naida CI Q70 Gebrauchsanweisung Seite 33

Evaluation of Front-End Sound Processing Features of
the Naída CI Sound Processor Family
Front-end sound-cleaning features (WindBlock,
SoundRelax, EchoBlock) are designed to improve and/
or ease listening ability in environmentally noisy and/
or challenging listening environments for AB implant
recipients using a Naída CI Q70 sound processor. A non-
inferiority clinical study was conducted to demonstrate
that there is no negative impact on speech understanding
in quiet and noise when these features are enabled.
Subjects were 18 experienced adult recipients of
CII/HiRes 90K implants (12 unilateral, 6 bilateral).
Baseline AzBio sentence recognition was assessed
acutely in quiet and in speech-spectrum noise. Then
subjects were evaluated under the same conditions
using each individual feature (WindBlock, SoundRelax,
EchoBlock) and a combination of features (WindBlock +
SoundRelax + auto UltraZoom). While auto UltraZoom
was included in the testing, this feature is not available
in the Naída CI Q70 sound processor.
Subjects then experienced the features chronically over
a four-week period. Using a randomized, blinded cross-
over design, subjects were fit with a single feature for
two weeks. At the end of each two-week period, subjects
completed a questionnaire that assessed their subjective
comfort and acceptability of the feature(s).
In both the acute and chronic phases of the study,
no software modifications to the subjects' listening
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