There are many microphones available that can produce a selection of polar
This is achieved by mounting two diaphragms back-to-back with a single central
By varying the relative polarization of the diaphragms and backplate, any of
the four main polar patterns can be created.
It is often thought that the best and most accurate microphones are the true
omnidirectional and the true figure-of-eight, and that mimicking these patterns
with a multipattern mic is less then optimal.
Nevertheless, in practice multipattern mics are so versatile that they are
commonly the mic of first choice for many engineers.