A microphone transforms sound waves into electrical energy, and vice versa, into sound recording and reproduction processes. It essentially consists of a diaphragm attracted by an electromagnet which, when vibrating, modifies the current transmitted by the different pressures to a circuit. A microphone works as an electro-acoustic transducer or sensor and converts the sound (sound waves) into an electrical signal to increase its intensity, transmit and record it.
Currently, most microphones use electromagnetic induction (dynamic microphones), capacitance change (condenser microphones) or piezoelectricity (piezoelectric microphones) to produce an electrical signal from variations in air pressure.
