Luftdaten.info is conceiving a noise sensor based on the Teensy 4.0

Air quality data
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A new ambient noise sensor for OK-LAB-SENSOR-NETWORK

The time has come: The development of a low-cost noise sensor for measuring ambient noise is completed as a beta version. Our network, which has so far been geared towards the measurement of particulate matter, is thus extended by an important environmental parameter.

An I2S microphone and the Teensy 4 [1] are used for this purpose.

[1] Teensy 4.0 - Hardwareentwicklung / hardware development - Hiveeyes

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A post was split to a new topic: Street Sense - A portable electronic device to measure air and noise pollution