15 total minutes is reached. The NOISE filter will not act on
manual recordings and Auto-ID will only run in real time if the
length is under 60 seconds.
During triggered recording, the Trigger Minimum Frequency,
in the Spectrogram Settings panel, should be set as high as
possible but lower than any expected bat echolocation. For
North America and the UK, 12 kHz works well. Lower
frequency signals will not initiate a recording. The Threshold
can be set between 6 kHz and 60 kHz.
During recording, animation appears around the Record
button. A white outline forms around the recording on the
spectrogram when a recording is in process. In addition, a
glowing red orb appears on all title bars in the app when
recording is activated and glows green when a recording is
triggered. The duration of the current recording is shown to
the right of the orb. Using triggered recording, the duration
of the current session is shown and using manual recording,
the duration of the current recording is shown. At the
conclusion of the recording, a label shows the filename. Tap
appropriate icon in the label to:
■
Identify the species of bat automatically, or override the
species tag.
■
Append voice or text notes to that recording.
■
Navigate to the recording location in GPS view.
■
Delete the recording.
Recordings with no bat detected are automatically tagged as
“NOISE” and automatically deleted. You can choose to not
auto-delete NOISE files in the Advanced Settings screen.
Using triggered recording, each time you press the Record
button a session is started. The session is concluded when
you toggle recording off. Each session is given a distinctive
color bar in the recording List and as a path in GPS View. An
option in the Advanced Settings screen organizes sessions
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