Knowledge Base

Detect the calls

Detect The Calls

Detect The Calls

In the Call Detection screen, specify the parameters that define the basic unit of vocalization (call). 1. Choose Analysis > Call Detection. 2. In the window that appears, select a recording. 3. tip Under View, click Filter and apply a high-pass filter to remove low-frequency noise. 4. Under Step through all data, click the buttons to visualize part of the recording and locate vocalizations in the spectrogram. Detect the calls

tip Use the mouse wheel to zoom in and out the timeline in the

spectrogram. 5. Locate the spectrogram of a representative vocalization. 6. Draw a rectangle around the spectrogram, as indicated in the figure below. 7. Click OK in the window that opens, or first adjust the values of the detection parameters, and click OK. 8. Click Detect calls in this recording to let UltraVox XT detect the calls. Detect the calls 9. Click Edit and fine-tune the frequency, amplitude and temporal parameters of the call definition to detect more calls of that type.

When ready, click Detect calls in this recording to apply the new

parameter values.

Notes

Click Edit and then Save to save a call definition as a template,

which you can copy to another experiment. You can also add calls that were not detected by UltraVox XT, or

delete unwanted detected calls. See Call labeling in the UltraVox XT

Help.

For tips on how to detect more calls, see Call detection in the

UltraVox XT Help. When you are confident that a call definition detects most of the calls, click Detect calls across all recordings.

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Source: UltraVox XT 4 - Quick Start Guide