The mounting will mask high frequencies from the rear, giving it a
degree of apparent directivity. The term uni-directional isn't really
valid in a microphone context.
A cardioid results from the superimposition of an omni and a figure of
eight pattern, and has a nice deep null off the back.
A hyper-cardioid such as a Sennheiser 805 has a tighter main lobe with a
few minor lobes off the back but the pattern is frequency-sensitive.
Sort of like antennas really!
> Is it fair to suggest that the mic element is omni but because of the way it
> is mounted - in a case with an opening on one side and with sound absorbing
> material behind it - that it effectively functions as a uni?
> Craig "Buck"
> Fredericksburg, Virginia USA
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