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Monday, 25 July 2011

Q+A: How Do Condenser Microphones Work?

The word condenser actually means capacitor. A capacitor is a common electrical component which stores energy in the form of an electrostatic field. The capacitor allows acoustical energy to be converted to electrical energy.


The electrostatic field needs external or battery power to be created, the image below illustrates that this field is created between the two plates of the diaphragm and the back plate. As the diaphragm is moved from sound waves the change in the electrostatic field information is sent to an external recording device and then amplified as the initial voltage differences are so small.




The resulting audio signal is stronger signal than that from a dynamic. Condensers also tend to be more sensitive and responsive than dynamics, making them well-suited to capturing subtle nuances in a sound. They are not ideal for high-volume work, as their sensitivity makes them prone to distort.

Feel free to comment for more information to be added or made more clear.

Thanks,

Matt Price

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