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. Author manuscript; available in PMC: 2009 May 1.
Published in final edited form as: Anim Behav. 2008 May;75(5):1781–1791. doi: 10.1016/j.anbehav.2007.10.032

Figure 2.

Figure 2

(a–b) Oscillograms of the (a) conspecific (H. chrysoscelis) signal and (b) the heterospecific (H. versicolor) signal depicting a temporal window of 1.5 s around each call. Insets in (a) and (b) depict a single pulse from the corresponding call. The pulses in the H. chrysoscelis call (a) were 11 ms in duration and separated by 11 ms inter-pulse intervals (pulse period = 22 ms; pulse duty cycle = 50%) and were shaped with onsets (4 ms) and offsets (7 ms) that had half-amplitude times that were 43% and 53% of the duration of the onset and offset times, respectively. The pulses in the H. versicolor call (b) were 30 ms in duration and separated by 30 ms inter-pulse intervals (pulse period = 60 ms; pulse duty cycle = 50%) and were shaped with onsets (20 ms) and offsets (10 ms) that had half-amplitude times that were both 55% of the duration of the respective envelope ramp. Note that this H. versicolor call was effective at eliciting phonotaxis from females of H. versicolor (M. A. Bee unpublished data). (c) Power spectrum of the chorus-shaped noise.