The Noise Sensor is used to detect the sound intensity of the environment.
NOTE: When sold along with a microphone, the Smart Cities board is supplied calibrated by Libelium to return an output in the range between 50dBSPLA and 100dBSPLA with an accuracy of ±2.5dBSPLA. The calibration data associated to the microphone reading is stored in the microcontroller’s EEPROM, between addresses 164 and 185
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