Sound sensors
You are interested in everything around you sound? You're right here - in the world microphones. The microphone consists of a diaphragm with a magnet and a coil. Sound from the environment vibrates the diaphragm and builds up a voltage change in the coil. This voltage is then easily converted to analog signal proportional to the volume of the sound or compare it with the set value and send a digital HIGH signal if it exceeds this value. The signal from the microphone can also be sent over the I2S bus, which is a bus designed for sending audio.
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