Measure Sound/Noise Level in dB with Microphon…

Measure Sound/Noise Level in dB with Microphone and Arduino

We have some instruments which could measure the sound signals in dB but these meters are slightly expensive and sadly we do not have an out of box sensor module to measure sound levels in decibels. And it is not economical to purchase expensive microphones for a small Arduino project which should measure the sound level in a small classroom or living room.