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Omnidirectional mics accept all signals regardless of wherever those signals
originate (in front of the mic, behind it, to the side, etc.). In contrast, directional
cardioid mics are specifically designed to accept mostly signals coming from
directly in front, and to reject
signals coming from behind or
from the side. The most
extreme variation of cardioid is
the hypercardioid pattern uti-
lized by the QV Headset (as
shown in the illustration on the
right); this yields maximum
rejection of signal coming from
any direction other than directly
in front of the mic.
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USING YOUR QE/QV HEADSET
0°
-10dB
-20dB
90°
180°
270°
QV Headset Polar Pattern
(measured at 1 kHz)