there are stronger sound sources present. More exact estimates of the sound
source location are shown when the range is adjusted to the right.
Below the image, there is a field for entering and updating comments. Click
on
Save comments
to save the new or updated comments.
Below the field for comments, additional properties of the snapshot are listed.
Below these, there is a button for deleting the snapshot.
To the right of the image, below the sound level, there is a view of the last 100
ms of the sound signal from the dominant source in the image (i.e. the loca-
tion of the crosshair when taking the picture). You can choose between five
different ways to visualize the signal:
• Time: amplitude of the signal as a function of time
• FFT: magnitude spectrum of the signal
• Spect: magnitude spectrum of the signal as a function of time
• Cepstrum: cepstrum of the signal
• Autocorrelation: autocorrelation of the signal
Below the signal view, application-specific analysis results are shown, if
available.
10.3
Color mode
On top of the screen, there is the possibility to choose between two different
color modes for displaying the snapshot heatmap:
location
and
strength
.
The
location
color mode shows each sound source with several different col-
ors, ranging from blue to red. The center of the sound sources is shown with
red color, while the color gradually changes via yellow, green, and cyan to
blue outwards from the center of the sound source.
The
strength
color mode shows each sound source with a single color accord-
ing to the intensity of the sound source.
10.4
Offline file upload
To upload snapshots from a USB memory stick to the FLIR Acoustic Camera
Viewer for storage and further analysis, click on the
Offline files
button on top
of the screen. Either drag and drop the files into the designated area or select
the files to upload by first clicking the link. The snapshot files that should be
uploaded have the
nlz
extension on the USB memory stick.
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Summary of Contents for Si124
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