Microphones what do they do.

Updated: Jun 10

We all know the obvious, we talk into a microphone, and the audience hears us, but how does it work? A microphone is actually a transducer, that is it converts sound pressure waves into electrical signals, here is basically how it works, first lets try a little experiment, hold your hand a couple of inches away from the front of your mouth, and talk normally, what do you feel, it is your breath, as you talk is what you are feeling, when we talk, we take a breath of air into our lungs, when we talk, that air is forced out of our lungs, past our vocal chords which vibrate, which gives us the sound of our voice, we can all recognize someone by the sound of their voice, without seeing them, so as you breath out, you are causing air pressure to move, this causes air pressure to create different pressure waves, both short and long, and all in between, it is this air pressure that passes over the capsule of the microphone, that causes that disc to vibrate, this disc is connected by two tiny wires which are very thin, to vibrate and induces a voltage through a voice coil, this signal is then passed into an amplifier, which through circuits containing transistors, boost that tiny signal up to millivolt levels that the amplifier can use, this is the very basic of how a microphone works, but I hope it give you some understanding of what happens.

A Rode studio Microphone

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