BioAcoustica is a free, open repository of wildlife sound recordings from the Natural History Museum, London.
Taxonomic index of the BioAcoustica collection
Acoustic and biological measurements in the BioAcoustica collection
Recording annotations from ann-o-mate
The specimens that recordings are of, from the collections
Where the specimens that recordings are of were collected, not where the sound was recorded
Six records from one male were examined. The calling song consists of phrases (Figure 3B) with irregular intervals. Phrase durations vary between 1.69 and 2.31 s (1.94 ± 0.13), and each phrase contains 71–82 syllables (74.6 ± 2.9). The phrase starts with 7–10 lower amplitudes syllables (generally corresponds to 1/7–1/8 of phrase) and continues with a crescending sequence and reach as highest amplitude at the end of this part (Figure 3C). The remaining syllables have quite similar amplitude. The phrase begins with an isolated first hemisyl- lable and is followed by a gap which last 27–58 ms (41.15 ± 9.97) between the first hemisyllable and the ordinary syllables in phrase. Oscillographic analyses show that the syllable periods duration varies between 20.44 and 31.81 ms (24.67 ± 1.6), and each syllable shows a standard structure, which is formulated as loud and long opening hemi- syllable + less loud and short closing hemisyllable (Figure 3D). The opening hemisyllables duration varies between 7.82–17.78 ms (13.45 ± 1.28), whereas the closing hemisyllable lasts for 8.73–15.90 ms (11.22 ± 1.09).