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Price: as with all aspects of the sky360 system a balance must be struck between price vs capability. High cost per unit will limit the number of sensor nodes and, consequently, the coverage of the network. Data aquired from a low cost microphone could be
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Microphone: should ideally support an operating frequency in the range of 20 Hz to 20 kHz
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Outdoors exposure: The device has to operate outdoors for long periods of time during which it will be exposed to winds and rains. Therefore, it requires effective protection against adverse atmospheric conditions.
sounddevice matplotlib numpy sudo apt-get install python3-pyqt5
Microphone selection https://recercat.cat/bitstream/handle/2072/377970/electronics-09-01155.pdf?sequence=1
Source localisation
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https://dsp.stackexchange.com/questions/61662/gcc-phat-for-multiple-sound-sources http://www.diva-portal.org/smash/get/diva2:724272/FULLTEXT01.pdf
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Design of MEMS microphone protective membranes for continuous outdoor applications https://www.sciencedirect.com/science/article/abs/pii/S0003682X21003984
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Uncertainties of the frequency response of wet microphone windscreens https://www.sciencedirect.com/science/article/abs/pii/S0003682X13002405
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On the ability of consumer electronics microphones for environmental noise monitoring https://www.researchgate.net/publication/49682953_On_the_ability_of_consumer_electronics_microphones_for_environmental_noise_monitoring
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Some good supporting docs for mic choice: https://www.infineon.com/dgdl/Infineon-AN547_Why%20you%20need%20high%20performance%20ultra-high%20SNR%20microphones%20-AN-v01_01-EN.pdf?fileId=5546d4626102d35a01612d1e2afd6ad3 https://www.infineon.com/dgdl/Infineon-EETE_June_Cover+CoverStory_MEMSMicro_final_plus_cover-Article-v01_00-EN.pdf?fileId=8ac78c8c81ae03fc0181f6f7ce302b4c