Fig. 4: An illustrative example of the advertisement call of Physalaemus albonotatus for the three audio quality categories.
From: A dataset for benchmarking Neotropical anuran calls identification in passive acoustic monitoring
(a) High-quality call (H) shows a high signal-to-noise ratio, no overlap with other sounds, a well-identifiable structure on the spectrogram, and can be easily visualized on the oscillogram. (b) Medium-quality call (M) can be visually identified on the spectrogram but may overlap with other sounds that can be difficult to identify in the oscillogram. (c) Low-quality call (L) shows a low signal-to-noise ratio, is partially masked by other sounds, appears with low intensity on the spectrogram, and cannot be easily identified on the oscillogram.
