Skip to main content
. 2011 Mar 9;6(3):e17460. doi: 10.1371/journal.pone.0017460

Figure 1. Spectrograms and waveforms of typical syllables recorded from CBA/CaJ pups.

Figure 1

All of the syllables shown from a p9 pup (top) have frequency steps and one harmonic, the sound levels of consecutive syllables varied substantially. The final two syllables shown from a p13 pup (bottom) have nonlinearities within their 2nd elements.