Type C examples from samples used for parameter extraction (n = 7).
In all panels, note the upper frequency harmonics, indicative of a signaler facing the Acousonde. In the far right panel, note the end of a type E call (indicated by red asterisk) prior to the beginning of a type C response. Yellow boxes indicate type C overlapping tonal components. Spectrogram para...
Main Authors: | , , , |
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Format: | Still Image |
Language: | unknown |
Published: |
2021
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Subjects: | |
Online Access: | https://doi.org/10.1371/journal.pone.0254393.g003 |
Summary: | In all panels, note the upper frequency harmonics, indicative of a signaler facing the Acousonde. In the far right panel, note the end of a type E call (indicated by red asterisk) prior to the beginning of a type C response. Yellow boxes indicate type C overlapping tonal components. Spectrogram parameters: DFT size 512, 256 sample hop size, and Hann window 512 samples. |
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