Figure 1 | Scientific Reports

Figure 1

From: Inter-annual decrease in pulse rate and peak frequency of Southeast Pacific blue whale song types

Figure 1

(a) Time/frequency representation of a phrase of the SEP1 song, recorded in the Corcovado Gulf, Chile, 2012 March 1st, sample rate fs = 2 kHz, FFT 212 points, overlap of 90%, Blackman window. (b) Time/frequency representation of a phrase of the SEP2 song, recorded off Isla Chañaral, Chile, 2017 February 2nd, sample rate fs = 48 kHz, FFT 216 points, overlap of 75%, Blackman window.

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