ChirpArray: A low‐cost, easy‐to‐construct microphone array for long‐term ecoacoustic monitoring

Abstract Advances in passive acoustic monitoring (PAM) have highlighted the importance of recording devices and audio recognition techniques in ecosystem monitoring. This study introduces ChirpArray, a cost‐effective and easily assembled microphone array for long‐term ecoacoustic monitoring of outdo...

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Main Authors: Ryotaro Okamoto, Hiroyuki Oguma
Format: Article
Language:English
Published: Wiley 2025-02-01
Series:Methods in Ecology and Evolution
Subjects:
Online Access:https://doi.org/10.1111/2041-210X.14474
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author Ryotaro Okamoto
Hiroyuki Oguma
author_facet Ryotaro Okamoto
Hiroyuki Oguma
author_sort Ryotaro Okamoto
collection DOAJ
description Abstract Advances in passive acoustic monitoring (PAM) have highlighted the importance of recording devices and audio recognition techniques in ecosystem monitoring. This study introduces ChirpArray, a cost‐effective and easily assembled microphone array for long‐term ecoacoustic monitoring of outdoor ecosystems. The ChirpArray system features a four‐channel microphone array that estimates sound source directions, aids in identifying individual animals and provides a detailed behavioural analysis. Unlike previous microphone arrays, ChirpArray is low‐cost, low‐power and waterproof, making it ideal for extended‐field monitoring. It is a fully open source and is constructed from readily available materials, ensuring broad accessibility for applications ranging from local citizen projects to large‐scale landscape recordings. This study details the power, storage consumption and localization performance of ChirpArray. Current measurements show that a small solar‐power set‐up can continuously operate the system. Localization tests using loudspeakers have yielded promising results. ChirpArray is a compact, energy‐efficient microphone array designed for long‐term outdoor recording, offering considerable advantages in ecoacoustic monitoring. Its exceptionally low power consumption allows for efficient and flexible deployment, making it an ideal solution for extended‐field monitoring and large‐scale landscape recordings.
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spelling doaj-art-2f6fdb3b53d5410884f5b44dc89fa54f2025-02-05T05:43:20ZengWileyMethods in Ecology and Evolution2041-210X2025-02-0116230230810.1111/2041-210X.14474ChirpArray: A low‐cost, easy‐to‐construct microphone array for long‐term ecoacoustic monitoringRyotaro Okamoto0Hiroyuki Oguma1Biodiversity Division National Institute for Environmental Studies Tsukuba Ibaraki JapanBiodiversity Division National Institute for Environmental Studies Tsukuba Ibaraki JapanAbstract Advances in passive acoustic monitoring (PAM) have highlighted the importance of recording devices and audio recognition techniques in ecosystem monitoring. This study introduces ChirpArray, a cost‐effective and easily assembled microphone array for long‐term ecoacoustic monitoring of outdoor ecosystems. The ChirpArray system features a four‐channel microphone array that estimates sound source directions, aids in identifying individual animals and provides a detailed behavioural analysis. Unlike previous microphone arrays, ChirpArray is low‐cost, low‐power and waterproof, making it ideal for extended‐field monitoring. It is a fully open source and is constructed from readily available materials, ensuring broad accessibility for applications ranging from local citizen projects to large‐scale landscape recordings. This study details the power, storage consumption and localization performance of ChirpArray. Current measurements show that a small solar‐power set‐up can continuously operate the system. Localization tests using loudspeakers have yielded promising results. ChirpArray is a compact, energy‐efficient microphone array designed for long‐term outdoor recording, offering considerable advantages in ecoacoustic monitoring. Its exceptionally low power consumption allows for efficient and flexible deployment, making it an ideal solution for extended‐field monitoring and large‐scale landscape recordings.https://doi.org/10.1111/2041-210X.14474automated recording unitecoacousticsmicrophone array
spellingShingle Ryotaro Okamoto
Hiroyuki Oguma
ChirpArray: A low‐cost, easy‐to‐construct microphone array for long‐term ecoacoustic monitoring
Methods in Ecology and Evolution
automated recording unit
ecoacoustics
microphone array
title ChirpArray: A low‐cost, easy‐to‐construct microphone array for long‐term ecoacoustic monitoring
title_full ChirpArray: A low‐cost, easy‐to‐construct microphone array for long‐term ecoacoustic monitoring
title_fullStr ChirpArray: A low‐cost, easy‐to‐construct microphone array for long‐term ecoacoustic monitoring
title_full_unstemmed ChirpArray: A low‐cost, easy‐to‐construct microphone array for long‐term ecoacoustic monitoring
title_short ChirpArray: A low‐cost, easy‐to‐construct microphone array for long‐term ecoacoustic monitoring
title_sort chirparray a low cost easy to construct microphone array for long term ecoacoustic monitoring
topic automated recording unit
ecoacoustics
microphone array
url https://doi.org/10.1111/2041-210X.14474
work_keys_str_mv AT ryotarookamoto chirparrayalowcosteasytoconstructmicrophonearrayforlongtermecoacousticmonitoring
AT hiroyukioguma chirparrayalowcosteasytoconstructmicrophonearrayforlongtermecoacousticmonitoring