ABSTRACT
For many applications it is necessary to use a microphone with directional properties
exceeding those of the first-order cardioid family. In the film/video industry, for example,
dialog pickup on the shooting set is usually done by way of an overhead boom microphone
that must be clearly out of the picture and may be two or more meters away from the actors.
Adequate pickup may depend on a highly directional microphone to ensure both speech
