Mic directionality can be classified in three distinct types: omnidirectional, unidirectional, and bi-directional. Within these categories, there are a number of different directional patterns known as polar-patterns; the most commonly known types are cardioid and supercardioid. For a large number of common applications, these will get you pretty far - but what if your requirements are a little more specific?

Recently, Ofcom approved plans for white space devices to share radio spectrum with digital TV and wireless microphones. Although we knew it was coming, the decision comes as a considerable blow as we face the prospect of unlicensed wireless devices operating in close proximity to wireless microphone and in-ear monitor systems.