Spectrogram binarization.

Colors: spectrogram of one.wav file (here: from the Cook Strait dataset) showing fin whale ‘doublet’ calls. Black and white: binarized spectrogram. Frequency resolution = 1 Hz, time resolution = 0.5 s, binarization thresholds = determined with trials (Cook Strait dataset: 88 dB, Gisborne dataset: -1...

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Bibliographic Details
Main Authors: Alexandra N. Constaratas (11133315), Mark A. McDonald (9668186), Kimberly T. Goetz (9944333), Giacomo Giorli (5814524)
Format: Still Image
Language:unknown
Published: 2021
Subjects:
Ecology
Environmental Sciences not elsewhere classified
Biological Sciences not elsewhere classified
fin whales
New Zealand
song types
doublet
occurrence
signal processing algorithm
Gisborne
Receiver Operating Characteristics
HF
ROC
Cook Strait
INI
New Zealand waters
spectrogram
monitoring Southern fin whales
Fin whale
Online Access:https://doi.org/10.1371/journal.pone.0253737.g002
Description
Summary:Colors: spectrogram of one.wav file (here: from the Cook Strait dataset) showing fin whale ‘doublet’ calls. Black and white: binarized spectrogram. Frequency resolution = 1 Hz, time resolution = 0.5 s, binarization thresholds = determined with trials (Cook Strait dataset: 88 dB, Gisborne dataset: -100 relative dB; S1 Appendix ).

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