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Fig. 3 | BMC Research Notes

Fig. 3

From: Nocturnal “humming” vocalizations: adding a piece to the puzzle of giraffe vocal communication

Fig. 3

Narrow-band spectrograms and waveforms of five different variations of giraffe humming vocalizations. Examples of five hums differing in acoustic structure and temporal characteristics are given. Spectrograms were generated in Praat 5.4.01 using the following settings: Gaussian window shape; frequency steps: 1000; time steps: 250; frequency range: 10 kHz; window lengths: 0.1 Hz; dynamic range: 35 dB. A sound file for each spectrogram is provided online at the Additional files: a (Additional file 5), b (Additional file 6), c (Additional file 7), d (Additional file 8), e (Additional file 9)

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