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
The advertisement call of Phyllodytes megatympanum is composed of a series of 10 to 19 unpulsed notes (n = 19 calls analyzed) with harmonic structure. Each note has seven visible harmonics and crescent modulation frequency. The first notes are shorter than the following ones, which are more intense. Notes show amplitude modulation from the beginning to the middle, when it decreases. The mean duration of each call is 5.913 ± 4.556 s (3.206–23.633 s; n = 19 calls) emitted in intervals of 30.904 ± 10.313 s (6.960–47.580 s; n = 15 intervals). The notes present mean duration of 0.092 ± 0.080 s (0.009–0.245 s; n = 254 notes) and are emitted at intervals of 0.305 ± 0.100 s (0.105–0.619; n = 235 intervals). The mean dominant frequency is 3.985 ± 0.136 kHz (3.562–4.125 kHz; n = 113 notes analyzed) and corresponds to the second harmonic. Due to its ascendant modulation, the frequency at the beginning of the second harmonic is lower than the frequency towards the end of it, raising a mean bandwidth of 0.8 kHz.