Single syllable from the the song of a male from Jackson County, Florida (WTL001-8c, 24.9°C). The terminal pulse train is preceded by three high-intensity single pulses. [display is 0.2 s = 200 ms]
Another syllable from the same recording (WTL001-8c, 24.9°C). Notice the greater complexity of the terminal pulse train.
Single syllable from the song of a male from Murray County, Georgia. Here the initial high-intensity components are a single pulse and two brief pulse trains (WTL001-16, 21.0°C).