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. Author manuscript; available in PMC: 2005 Oct 7.
Published in final edited form as: J Acoust Soc Am. 2005 Apr;117(4 Pt 1):2330–2337. doi: 10.1121/1.1863693

FIG. 1.

FIG. 1

Oscillogram of a male bullfrog’s call recorded at site 1 in 1994. This particular call is made up of six individual notes or croaks. Arrows point to modulations or gaps seen in individual notes. The first note contains no modulations; notes two through six contain 1, 2, 3, 2, and 2 modulations, respectively. Time-domain waveform was exported from cooledit 2000.