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Setting Up GPL Review:

You should have two folders created in order to run through GPL Review:

1. Folder containing .mat detection output from either the explosions or airgun detector.
2. Folder containing the df20 or df100 xwavs.

Add GPLReview to your path in MATLAB, once added type GPLreview into the command window. The GUI should open:

Selecting files:

Click the yellow folder icon in the top left corner with "T" to select the detection .mat file that you want to start with.

Click the yellow folder icon with the "W" to select the corresponding xwav.

GPL Review Settings:

Input the appropriate values into the settings boxes:

• Sample: 10,000
• Start Freq: 0 (Hz)
• End Freq: 1,000 (Hz)
• FFTL: 2,048
• Step: 512
• Plot: 60
• Detection Padding: 1

Check Deliminate Calls box to show where detections are divided:

Click the > button to display plot and start!

Marking detections:

• Mark All Yes to approve an entire window as being true detections.
• > or Mark All No to scroll to the next screen without accepting any detections as true.
• Mark to select only particular detections as true (must click left to right).
• Mark Some No to change particular detections back to false (must click left to right).

Listening to sound:

To listen to sound:

• Check Filter Audio box to place bandpass filter on plot.
• Click Play Audio.
• Click lower left then upper right limits of desired selection to set filter and play.

Padding:

The default is zero padding, but if you want to add time to the start and end of a detection (particularity useful when listening to sound), you can type in whatever number you want. Note if you pad too wide, multiple calls may show up in one box.

When the end of a detection file you selected is reached, it will automatically load the next detection .mat file and xwav file in the directory. You can go back and forth between detection files.

The output of the GPLreview is a bt matrix that is appended to each detection mat file (0 = false, 1 = true).

Errors:

GPLreview will stretch out the final few seconds of a detection file when it reaches the end of the file. Adjust the window of the GPLreview to make it narrow in order to make the resolution better.

Make sure xwavs are in their very own folder (no LTSAs, no subfolders, etc.) and that the detection files are in their very own seperate folder. Otherwise, a mismatch between the xwavs and detection files were occur in GPLreview.