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. 2009 Sep 9;6(1):59–62. doi: 10.1098/rsbl.2009.0611

Figure 2.

Figure 2.

Examples of vocalizations from awakening pipistrelle bats. Sonagram representation (FFT 512); oscillogram below, 70 dB dynamic range. (a) Typical example that closely corresponds to the average call parameters listed in table 1. (b) Example with especially prominent tonal components and long, trailing downward frequency modulated call. Scale bar, 100 ms.