Picture of person typing on laptop with programming code visible on the laptop screen

World class computing and information science research at Strathclyde...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by researchers from the Department of Computer & Information Sciences involved in mathematically structured programming, similarity and metric search, computer security, software systems, combinatronics and digital health.

The Department also includes the iSchool Research Group, which performs leading research into socio-technical phenomena and topics such as information retrieval and information seeking behaviour.

Explore

Distribution of sound pressure around a singing cricket : radiation pattern and asymmetry in the sound field

Chivers, Benedict D. and Jonsson, Thorin and Jackson, Joseph C. and Kleinhappel, Tanja K. and Shivarova, Nadezhda and Windmill, James F.C. and Montealgre-Z, Fernando (2016) Distribution of sound pressure around a singing cricket : radiation pattern and asymmetry in the sound field. Bioacoustics, 25 (2). pp. 161-176. ISSN 2165-0586

[img]
Preview
Text (Chivers-etal-Bioacoustics-2015-distribution-of-sound-pressure-around-a-singing-cricket-radiation-pattern)
Chivers_etal_Bioacoustics_2015_distribution_of_sound_pressure_around_a_singing_cricket_radiation_pattern.pdf - Accepted Author Manuscript

Download (665kB) | Preview

Abstract

Male field crickets generate calls to attract distant females through tegminal stridulation: the rubbing together of the overlying right wing which bears a file of cuticular teeth against the underlying left wing which carries a sclerotised scraper. During stridulation, specialised areas of membrane on both wings are set into oscillating vibrations to produce acoustic radiation. The location of females is unknown to the calling males and thus increasing effective signal range in all directions will maximise transmission effectiveness. However, producing an omnidirectional sound field of high sound pressure levels may be problematic due to the mechanical asymmetry found in this sound generation system. Mechanical asymmetry occurs by the right wing coming to partially cover the left wing during the closing stroke phase of stridulation. As such, it is hypothesised that the sound field on the left-wing side of the animal will contain lower sound pressure components than on the right-wing side as a result of this coverage. This hypothesis was tested using a novel method to accurately record a high resolution, three dimensional mapping of sound pressure levels around restrained Gryllus bimaculatus field crickets singing under pharmacological stimulation. The results indicate that a bilateral asymmetry is present across individuals, with greater amplitude components present in the right wing side of the animal. Individual variation in sound pressure to either the right or left-wing side is also observed. However, statistically significant differences in bilateral sound field asymmetry as presented here may not affect signalling in the field.