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. Author manuscript; available in PMC: 2017 Oct 27.
Published in final edited form as: J Physiol Paris. 2016 Oct 27;110(3 Pt B):200–215. doi: 10.1016/j.jphysparis.2016.10.005

Fig. 7.

Fig. 7

Contribution of chirp FM to peak conspicuousness of natural chirps on A) a 10 Hz beat and B) a 100 Hz beat. Chirp FM and peak chirp conspicuousness are shown on a log scale. Chirps with large frequency excursions were more conspicuous (partial correlation: 0.72, p<0.0001). One notable exception to this pattern was the chirps of A. devenanzii (green > symbols), which are highly conspicuousness with low chirp FM values. This may be because these chirps have a complex, multi-peaked structure (Zhou & Smith, 2006).