Development and Validation of a Test Platform for Spatial EcoAcoustic Technologies

Le résumé fourni par la source

Microphone arrays and direction of arrival estimation algorithms have become increasingly capable and accessible, furthering EcoAcoustics / Passive Acoustic Monitoring (PAM) practitioners' capacity to analyse the spatial features of natural soundscapes and thereby yield richer insights into biodiversity and ecosystem health.However, there is a need for standardised, repeatable methods to comparatively evaluate these technologies.We developed a platform to this end, consisting of a 25-channel spherical loudspeaker array through which spatial natural soundscapes captured with a 19-capsule microphone (Zylia ZM-1) can be accurately reproduced and repeatedly re-recorded by spatial PAM devices under evaluation.Here, we first explore how well this lab-based platform can reproduce spatial natural soundscapes, and then present results from a trial of using the platform to evaluate a 6-microphone PAM device developed in our lab.We achieve this by comparing a range of typical ecoacoustic analyses between the field-and lab-based recordings.Further, we specifically use the platform to investigate how device orientation impacts the classification and localisation of avian calls with the software tools BirdNET and HARKBird, respectively.These initial outcomes suggest

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