User's Manual

Note that snapshots are not available in the snapshot browser after they have been uploaded to
the cloud service or exported to a USB memory stick.
Filter
Press the filter button to switch between different filters. The available filters
are application-specific, and typically change the frequency range that the NL
Camera uses for showing sound sources. The same frequency range is also
used when taking a snapshot and the sound is recorded.
Try the different available filter settings to see which filter serves your
application best. Remember that the most appropriate filter might vary from case to case, and
depend not only on the sound source of interest, but also on the background noise, and the
distance to the sound source. See the Usage techniques section for more information on choosing
filters. The NL Camera will typically be configured with some of the following filters:
Norm: Frequencies from 10 kHz upwards. Useful at larger distances in the absence of strong
background noise.
High: Frequencies from 20 kHz upwards. Useful in the presence of strong background noise.
Ultr: Frequencies from 25 kHz upwards. Useful in the presence of strong background noise.
SLM: Filter optimized for finding small leaks in the presence of background noise.
Zoom
The NL Camera is equipped with a 2x digital zoom, which can be
used for close-up snapshots. Press the zoom button to zoom in or
zoom out.
Single-source / multi-source mode
Press the single-source / multi-source button to toggle between the
two modes. In single-source mode, the NL Camera shows only the
sound source with the highest intensity (with a crosshair on top). If
there are multiple sound sources with the same or almost the same
intensity, they will all be shown.
In multi-source mode, the NL Camera shows multiple sound sources with different intensities. The
sound source with the highest intensity will be shown with a crosshair on top. Not all sound
sources will be shown. For example, if there is a very strong sound source shown, very weak
sound sources will not be visible at the same time.
To see weaker sound sources (in either single-source or multi-source mode), position and rotate
the camera so that stronger sound sources are outside the field of view. You can also use the
zoom button to limit the field of view.