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Fig. 5 | BMC Zoology

Fig. 5

From: Ontogeny of audible squeaks in yellow steppe lemming Eolagurus luteus: trend towards shorter and low-frequency calls is reminiscent of those in ultrasonic vocalization

Fig. 5

Measured parameters for sharp squeaks exemplified by 4-day old pup sharp squeak with chevron contour. Spectrogram (right), mean power spectrum of the entire call (left) and wave-form (above). Designations: duration – call duration; f0max – the maximum fundamental frequency; f0min – the minimum fundamental frequency; f0beg – the fundamental frequency at the onset of a call; f0end – the fundamental frequency at the end of a call; fpeak – the frequency of maximum amplitude. Spectrogram was created using sampling frequency 48 kHz, a Hamming window, Fast Fourier Transform (FFT) 1024 points, frame 50% and overlap 96.87%

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BMC Zoology

ISSN: 2056-3132

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