Fig. 1From: High frequency audible calls in northern birch mice Sicista betulina in response to handling: effects of individuality, sex and body mass on the acousticsMeasured acoustic variables in the discomfort sonic calls of the northern birch mice Sicista betulina. Spectrogram (right) and power spectrum (left). Designations: duration—call duration; f0max—the maximum fundamental frequency; f0min—the minimum fundamental frequency; f0beg—the start fundamental frequency; f0end—the end fundamental frequency; fpeak—the frequency of maximum amplitude; q25, q50, q75—lower, medium and upper quartiles; bandwidth—the bandwidth of the fpeak at the distance of 10 dB from the maximum. The spectrogram was created with Hamming window; 48 kHz sampling rate; FFT 1024 points; frame 50%; and overlap 93.75%Back to article page