Assembling cheap, high-performance microphones for recording terrestrial wildlife: the Sonitor system [version 1; referees: 2 approved, 1 approved with reservations]

Passive acoustic monitoring of wildlife requires microphones. Several cheap, high-performance open-source solutions currently exist for recording sounds, but all of them are still reliant on commercial microphones. Commercial microphones are relatively expensive, specialized on particular taxa, and...

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Main Authors: Kevin Darras, Bjørn Kolbrek, Andreas Knorr, Volker Meyer
Format: Article
Language:English
Published: F1000 Research Ltd 2018-12-01
Series:F1000Research
Online Access:https://f1000research.com/articles/7-1984/v1
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author Kevin Darras
Bjørn Kolbrek
Andreas Knorr
Volker Meyer
author_facet Kevin Darras
Bjørn Kolbrek
Andreas Knorr
Volker Meyer
author_sort Kevin Darras
collection DOAJ
description Passive acoustic monitoring of wildlife requires microphones. Several cheap, high-performance open-source solutions currently exist for recording sounds, but all of them are still reliant on commercial microphones. Commercial microphones are relatively expensive, specialized on particular taxa, and often have opaque technical specifications. We designed Sonitor, an open-source microphone system to address all needs of ecologists that sample terrestrial wildlife acoustically. We evaluated the cost of our system and measured trade-offs that are seldom acknowledged but which universally limit microphones' functions: weatherproofing versus sound attenuation, windproofing versus transmission loss after rain, signal loss in long cables, and analog sound amplification and directivity with acoustic horns. We propose three microphone configurations suiting different budgets, sound qualities, and flexibility requirements, which all cover the entire sound frequency spectrum of sonant terrestrial wildlife at a fraction of the cost of commercial microphones.
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spelling doaj.art-7c7fce1afbb74476bddff624c1d6bb302022-12-22T03:04:34ZengF1000 Research LtdF1000Research2046-14022018-12-01710.12688/f1000research.17511.119151Assembling cheap, high-performance microphones for recording terrestrial wildlife: the Sonitor system [version 1; referees: 2 approved, 1 approved with reservations]Kevin Darras0Bjørn Kolbrek1Andreas Knorr2Volker Meyer3Department of Agroecology, University of Göttingen, Göttingen, Niedersachsen, 37077, GermanyCelestion, Ipswich, Suffolk, IP6 0NL, UKMess-, Steuerungs-, und Regeltechnik, University of Göttingen, Göttingen, Niedersachsen, 37077, GermanyKonstruktion, Geräte- Neuentwicklung, Schreinerei, Schlosserei, University of Göttingen, Göttingen, Niedersachsen, 37077, GermanyPassive acoustic monitoring of wildlife requires microphones. Several cheap, high-performance open-source solutions currently exist for recording sounds, but all of them are still reliant on commercial microphones. Commercial microphones are relatively expensive, specialized on particular taxa, and often have opaque technical specifications. We designed Sonitor, an open-source microphone system to address all needs of ecologists that sample terrestrial wildlife acoustically. We evaluated the cost of our system and measured trade-offs that are seldom acknowledged but which universally limit microphones' functions: weatherproofing versus sound attenuation, windproofing versus transmission loss after rain, signal loss in long cables, and analog sound amplification and directivity with acoustic horns. We propose three microphone configurations suiting different budgets, sound qualities, and flexibility requirements, which all cover the entire sound frequency spectrum of sonant terrestrial wildlife at a fraction of the cost of commercial microphones.https://f1000research.com/articles/7-1984/v1
spellingShingle Kevin Darras
Bjørn Kolbrek
Andreas Knorr
Volker Meyer
Assembling cheap, high-performance microphones for recording terrestrial wildlife: the Sonitor system [version 1; referees: 2 approved, 1 approved with reservations]
F1000Research
title Assembling cheap, high-performance microphones for recording terrestrial wildlife: the Sonitor system [version 1; referees: 2 approved, 1 approved with reservations]
title_full Assembling cheap, high-performance microphones for recording terrestrial wildlife: the Sonitor system [version 1; referees: 2 approved, 1 approved with reservations]
title_fullStr Assembling cheap, high-performance microphones for recording terrestrial wildlife: the Sonitor system [version 1; referees: 2 approved, 1 approved with reservations]
title_full_unstemmed Assembling cheap, high-performance microphones for recording terrestrial wildlife: the Sonitor system [version 1; referees: 2 approved, 1 approved with reservations]
title_short Assembling cheap, high-performance microphones for recording terrestrial wildlife: the Sonitor system [version 1; referees: 2 approved, 1 approved with reservations]
title_sort assembling cheap high performance microphones for recording terrestrial wildlife the sonitor system version 1 referees 2 approved 1 approved with reservations
url https://f1000research.com/articles/7-1984/v1
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