This image shows the material composition of microphone.
Microphones are also called as mic which is an electronic device that converts sound waves to electrical signals using magnets, coils and wires. The outer shell of this device is made up of plastic material which acts as an insulator. Diaphragm is a clothing structure that has infinite holes which allow the sound waves for the equal distribution of signals. This simple principle is to convert vibrations to electrical signals which is the reverse piezo effect.
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