Microphone Polar Patterns Part 1: Omni • 08.28.08
The first thing to consider when buying a new microphone is the polar pattern, also called a directional pattern. Microphone manufactures typically provide a polar diagram to show how sensitive the microphone is to a sound source in 360 degrees. Many mic boxes will have the diagram printed on the outside of the box. Next week, we’ll talk about the most popular pattern: cardioid. But first, let’s tackle the most basic:
Omnidirectional
Omni is a latin prefix that means “all.” Therefore, as one might deduce, an omnidirectional microphone captures all sound sources around it equally. (This would typically also go for sources above and below the mic - in case anyone in the band has a thing for flying … or laying down while playing.)
So if a guitarist is 3 feet in front of the mic, a bass amp is 3 feet to right, a singer is 3 feet behind, and a tamborine player is 3 feet to the left of the mic, one can achieve a great blend with only one mic. Keep in mind that there is no stereo in that situation, but…






