Fig. 1
From: Rutting vocal display in male impala (Aepyceros melampus) and overlap with alarm context
Spectrogram of the bout of male impala rutting calls. (R) roars, (S) snorts. The spectrogram was created with a Hamming window; 22,050 Hz sampling rate; FFT 1024 points; frame 50%; and overlap 87.5%. The audio file of these calls is available as Additional file 2: Audio S2