Figure 1 | Scientific Reports

Figure 1

From: Discomfort-related changes of call rate and acoustic variables of ultrasonic vocalizations in adult yellow steppe lemmings Eolagurus luteus

Figure 1

Procedure for preparation of a “joint call” and the maximum amplitude frequency and three power quartiles measure. (A) Spectrogram and wave-form of an intact natural sequence of USVs, separated with silent spaces, produced by adult female yellow steppe lemming. (B) Spectrogram, wave-form and power spectrum (left) of a part of the future joint call, made from the call sequence shown above. Measured acoustic variables: fpeak—the maximum amplitude frequency; q25—the lower quartile; q50—the medium quartile; q75—the upper quartile. Spectrogram was created using sampling frequency 192 kHz, Hamming window, FFT 1024 points, frame 50% and overlap 75%.

Back to article page