Download Cochlear Implant Processor Information, Instructions

Amplitude
Amplitude
Peaks merging
from 64 to 20
bands
No. of
electrodes
Compare Peak
and Peak-1
Compare Peak
and Peak+1
The displayed frequency value is expressed in Hertz (Hz) and can be changed by intervals of 122Hz or 130Hz depending on the
processor generation.
Each electrode is represented horizontally like in the Thresholds window.
The right-hand columns indicate the Min. and Max. frequencies of the assigned band. This frequency band is also represented
graphically by a horizontal bar whose left and right ends correspond to the Min. and Max. values shown.
The frequency distribution can be adapted automatically, manually, or it can be customized (semi-automatic).
The default distribution (“Standard distribution”) is applied linearly to the low frequencies and logarithmically to the high frequencies
in order to get as close as possible to how the cochlea normally functions (Bark Scale). This is the type of distribution that should
be applied in the vast majority of cases.
The “Redistribute in Cust. Freq.” button allows you to change advanced parameters (see the section below)
a) Procedure
Standard distribution
A default distribution is automatically given for all activations. This representation is both linear and logarithmic and falls within
a wide bandwidth. This bandwidth may vary slightly depending on the processor type (see the table below).
The “+” and “-” buttons on either side of the screen enable you to use the mouse to adjust the Min. and Max. values for a selected
electrode. These values can also be changed using the left and right arrow keys. Each electrode can receive a range of frequencies
that is within the total bandwidth of the microphone. The “<-” and “->” arrows at the bottom of the screen shift the entire frequency
distribution by intervals of 122Hz or 130Hz, depending on the processor generation.
Customized distribution
The window displayed allows you to set additional parameters for the frequency distribution, namely the Min. and Max. values of the
total bandwidth, the boundaries of the linear range, and the width of the bands in the linear range.
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