Specifications

The Scan Setup Window is a control panel which allows the operator to
setup the scanner and configure the call selection criteria. The control
parameters are separated into two function groups as show in figure 12.
The upper section controls the initial call detection criteria, while the
lower section controls the final call filtering. The primary difference be-
tween the two is that the upper section sets the criteria used to detect the
bat calls in the recording, while the lower section controls the filtering
operation which filters out unwanted detections.
The upper section contains three controls, the trigger level setting, the
minimum and maximum frequency cutoff settings, and the standard
view duration setting. To detect bat calls, SCAN’R tracks the noise
floor of the recording and searches for burst sound energy that is greater
than the noise by at least the value set by the Trigger Level. At the same
time, the scan will reject all sound energy at frequencies lower than the
minimum frequency cutoff setting or higher than the maximum setting.
This allow SCAN’R to immediately reject insects an other sounds that
are out of the ultrasonic frequency range. Once triggered, SCAN’R will
process the burst over duration selected by Standard View setting. The
Standard View duration can be adjusted using a slider. This allows the
operator to optimize the displays to meet the requirements of different
call types.
The lower section of the Scan Setup Window contains a set of filtering
controls. These controls are the peak power filter, the minimum dura-
tion filter , the fit restriction filter, the pop filter, and a parameter se-
lective filter bank . All of these filters are applied after the initial call
detection and are used to qualify the detections and/or search for calls
that meet certain criteria.
At the very bottom of the Scan Setup Window are two buttons which
allow the operator to load and/or save the currently configured settings.
These are useful for maintaining settings templates for specific scan cri-
teria.
3.6.2 : Scan Setup Window