Grove - Loudness Sensor
Introduction
3.3V 5.0V Analog
The Grove - Loudness Sensor is designed to detect the loudness of environmental
sound. Based on amplifier LM2904 and a built-in microphone, it amplifies and filters
the high frequency signal that received from the microphone, and outputs a positive
envelop. This will make for Arduino’s signal acquisition. The output value depends on
the level of sound input. In order to avoid unnecessary signal disturbances, input
signal will go through two times’ filtering inside the module. Lastly, there is a screw
potentiometer that enables manual adjustments to the output gain.
Previous Version: v0.9b
Specifications
• Voltage ：3.5~10 VDC
• Working Frequency ：50~2000 Hz
• Sensitivity : -48~66 dB
• Signal-to-noise Ratio : >58 dB
• Output Signal range : Analog Signal (0-1023)
Tip
More details about Grove modules please refer to Grove System
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