Finite Element Simulation of Frequency Response of MEMS-Microphone

Grigor’ev, D. M.; Godovitsyn, I. V.; Amelichev, V. V.; Generalov, S. S.

doi:10.1134/s106373971803006x

Cited by 3 publications

(1 citation statement)

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“…We used MEMS (micro-electromechanical systems) microphones produced by Knowles 31 to create our microphone arrays. For a long time there has been a drive towards miniaturization in electronics 32 which can also be seen in the rise of MEMS sensors such as microphones 33 , 34 . The recent developments in MEMS microphones are an enabling piece of technology allowing the construction of affordable microphone arrays.…”

Section: Resultsmentioning

confidence: 99%

Bio-acoustic tracking and localization using heterogeneous, scalable microphone arrays

et al. 2021

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Microphone arrays are an essential tool in the field of bioacoustics as they provide a non-intrusive way to study animal vocalizations and monitor their movement and behavior. Microphone arrays can be used for passive localization and tracking of sound sources while analyzing beamforming or spatial filtering of the emitted sound. Studying free roaming animals usually requires setting up equipment over large areas and attaching a tracking device to the animal which may alter their behavior. However, monitoring vocalizing animals through arrays of microphones, spatially distributed over their habitat has the advantage that unrestricted/unmanipulated animals can be observed. Important insights have been achieved through the use of microphone arrays, such as the convergent acoustic field of view in echolocating bats or context-dependent functions of avian duets. Here we show the development and application of large flexible microphone arrays that can be used to localize and track any vocalizing animal and study their bio-acoustic behavior. In a first experiment with hunting pallid bats the acoustic data acquired from a dense array with 64 microphones revealed details of the bats’ echolocation beam in previously unseen resolution. We also demonstrate the flexibility of the proposed microphone array system in a second experiment, where we used a different array architecture allowing to simultaneously localize several species of vocalizing songbirds in a radius of 75 m. Our technology makes it possible to do longer measurement campaigns over larger areas studying changing habitats and providing new insights for habitat conservation. The flexible nature of the technology also makes it possible to create dense microphone arrays that can enhance our understanding in various fields of bioacoustics and can help to tackle the analytics of complex behaviors of vocalizing animals.

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Section: Resultsmentioning

confidence: 99%