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How Microphones Work

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Microphones work very much like our ears. They have a kind of "ear drum" called a dyaphram that vibrates in response to sound and that vibration is translated into an electric signal that is interpreted by the recoding divice. There are a number of different types of mics. Among them are condenser mics, which capture more subtle sounds and dynamic mics, which captures louder sounds like drums and loud vocals. You regulalry use condenser mics since your smatphones has one as does your laptop if it has a mic. 

Mics also have a directional component or what is called a polar pattern. Omnidirectional mics take in sound surrounding the entire radious of the mic, while unidirection is more focused and takes in sound from only one direction. Bidirectional takes in sound from two different directions. Your smartphone's mic is Omnidirectional. It's important to understand the directionality of mics when purchasing one. Do you want a mic that can pick up sound from a lot of different directions without having to change the angle? Choose omnidirectional. Do you want a mic that is highly focused in one direction? Choose unidirectional. Do you need to record sound in front of a behind the mic (think

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