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SASLab Manual

Spectrogram window : Tools > Labels >

The labeling feature allows adding labels to sound files. A label consists of a short text string (max 30 characters), a time stamp and an optional frequency stamp. Section labels have two time stamps (start and end of section) and no frequency stamp. Labels are stored either directly into the .wav file header (default) or into a separate sidecar .lbl files.

There are several display format options for labels that can be adjusted from the Label toolbox and the Label settings dialog box:

Standard labels (time/frequency)
Alignment of the label text: left | center | right
Style of label: text only | arrow | arrow & frame

Section labels (start/end time)
Vertical location of the label: layer1 | layer2 | layer3 | total
The different layers allow to input overlapped or hierarchic labels. The total option will draw large section boundaries occupying the total vertical display space.

In order to accelerate entering frequently-used text strings, it is possible to define text modules from the main window command File > Rename by text module / Define text module... that will also appear on the Text modules menu of the Label dialog box (which can be accessed from the keyboard by pressing the Alt and then the up/down arrow keys).

Existing labels can be edited by right clicking at the label. In the appearing dialog box the label text, style and coordinates can be modified. The Copy button can be used to copy the coordinates into the clipboard. In section labels the Play button allows to playback the sound file section.

The proceed to next option will change the function of the OK button in such a way that the Label edit box is not closed and instead its focus is set to the Next label, which can accelerate naming or renaming a whole set of labels. When the focus of the Label edit box is switched to the next label, the corresponding spectrogram view will also be moved to that next label. In addition to that, the edit box will automatically proceed to the next label once one of the user-defined Text modules has been picked from the menu bar. Labels can be moved by left clicking at the label and dragging while the left mouse button is pressed. Section labels can also be resized by left clicking.

Right-clicking at a label while the Shift key is pressed will delete the label immediately.

Insert label Launches the Label toolbox and inserts a standard label at the cursor position (time and frequency in the spectrogram window; time only in the main and curve window). If the label is inserted in the main or curve window, the frequency coordinate of the label is set to -1.0, which means, that the frequency is not specified.

Insert section label Inserts a section label at the cursor position. In contrast to the standard label, a section label marks a time section by its start and end time stamps.

Insert section label from marker Inserts a section label at the current marked section. In contrast to the standard label, a section label marks a time section by its start and end time coordinates.

Insert section label from magic cursor Inserts a section label based on the Magic Cursor tool

Delete all labels This command will delete all labels.

Delete marked labels This command will delete the labels marked by the marker.

Label settings...

Label statistics…

Export label data...

Section label grid...

Rename labels...

Avisoft Bioacoustics last modified on 07 November 2022