| the effect of wing flexibility on sound generation of flapping wings. | in this study, the unsteady flow and acoustic characteristics of a three-dimensional (3d) flapping wing model of tibicen linnei cicada at forward flight condition are numerically investigated. a single cicada wing is modelled as a membrane with prescribed motion reconstructed from high-speed videos of a live insect. the numerical solution takes a hydrodynamic/acoustic splitting approach: the flow field is solved with an incompressible navier-stokes flow solver based on immersed boundary method a ... | 2017 | 28777744 |
| relationship between wingbeat frequency and resonant frequency of the wing in insects. | in this study, we experimentally studied the relationship between wingbeat frequency and resonant frequency of 30 individuals of eight insect species from five orders: odonata (sympetrum flaveolum), lepidoptera (pieris rapae, plusia gamma and ochlodes), hymenoptera (xylocopa pubescens and bombus rupestric), hemiptera (tibicen linnei) and coleoptera (allomyrina dichotoma). the wingbeat frequency of free-flying insects was measured using a high-speed camera while the natural frequency was determin ... | 2013 | 24166827 |
| auditory threshold change in singing cicadas | the hearing sensitivity in singing cicadas is reduced during sound production by a folding of the tympanal membranes. using electrophysiological recording and nerve stimulation techniques, we have shown an effect of the folded tympanum on the auditory threshold of two species of cicadas, tibicen linnei and okanagana rimosa. auditory thresholds of both species increased by about 20 db when the tympana folded during singing. in t. linnei the increase in threshold affected the whole frequency range ... | 1994 | 9317307 |
| function of the tensor muscle in the cicada tibicen linnei | the calling song and the disturbance squawk of the cicada tibicen linnei (insecta: homoptera) are described in terms of their physical parameters. the calling song is composed of quiet parts, which are very similar to the disturbance squawk, and loud parts, which are amplitude- and rate-modulated. the role of the tensor muscle acting on the tymbal frame in modulating the sound pulse amplitude was investigated. we demonstrate by tensor nerve recordings, by mechanical mimicking of the tensor muscl ... | 1994 | 9317284 |