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
| Morris, Glenn K.; Beier, Max (1982). Song Structure and Description of Some Costa Rican Katydids (Orthoptera: Tettigoniidae). Transactions of the American Entomological Society, 108(1/2): 287-314. |
ese colours deteriorated greatly with death. Two brief calling song buzzes were recorded in the laboratory. The sound is sibilant and quavering. A PTG of two train types is repeated at a rate of 29-30/s at 24 C. The trains have very different amplitude envelopes and very similar durations (Fig. 14). Rapid decay pulses make up the trains. Several spectra were obtained from the living insect but with much aspect variation: the animal walked and turned incessantly in the analysis cage. This is a good example of a low-Q sound generating system. Energy occurs across a wide band, 20-70 kHz, with the strongest peak near 30-34 kHz. A smaller peak is evident in the high audio range but this is not a consistent feature of all spectrograms.