FIGURE 1 in The last scream: the distress call of a probably extinct Brazilian anuran (Holoaden bradei Lutz, 1958)
2018-05-23T23:50:28Z (GMT) by
FIGURE 1. Spectrogram (above) and oscillogram (below) of two distress calls of Holoaden bradei. One call with ascendantdescendant modulation (A) and another with slight modulation along its duration, except for the final portion, where it is observable a strong descendant modulation (B).