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Did You Know ?
Polar Patterns
Multiple polar patterns on a microphone
can be obtained in various different ways
including mechanical and electrical
methods.
Mechanical methods make use of air
vents in the microphone body to allow or
prevent sound to penetrate from the back
of the capsule in order to achieve
different diaphragm pressures. In the
case of the U87 however, electrical
methods are employed by making use of
the dual-capsule design of the K87.
By disabling the rear diaphragm, the U87
presents a cardioid response by only
making use of the front diaphragm and
front backplate. By engaging the rear
diaphragm and rear backplate, the
microphone will produce an omni
response if both front and back signals
are in phase and a figure of 8 response if
they are out of phase.
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