Quote:
Originally Posted by
jayoski
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I'm curious if it's possible to a achieve a coincident stereo image with this microphone by turning the mic 45 degrees. It seems to me that by utilizing the two Figure 8/gradient capsules (X & Y) in a Blumlein configuration and then by blending in the desired amount of the pressure/omni signal (W) at the mixing stage one can achieve a standard X-Y configuration, i.e. 2 cardioid mics at 90 degrees. Is it possible to use the mic in this way?
Hi jayoski. With theoretically perfect mic polar patterns, an XY array of cardioids at 90° is obtainable by sum & diff. matrixing of an MS pair, provided that::
1. the M mic is a subcardioid of polar pattern, "V = 0.745 + 0.255.cos.theta",
and at the same time:
2. The M channel is boosted by +11.87dB relative to that of the Fig8 S. (assuming equal mic sensitivities)
It follows then that this should be easy to accomplish in post with the Josephson, by:
a). Set up the Josephson with one Fig8 pointing frontwards and the other pointing hard left
b). Mix its omni signal with its front-pointing Fig8 in the ratio 74.5 :25.5. (i.e omni at +9.31dB). This gives the "intermediate" M subcardioid.
c) Sum & diff. matrix the intermediate M subcardioid obtained from step "b" with the left Fig8, using 11.87dB extra gain for the subcardioid.
But what scenario did you have in mind for cardioid XY at 90°? Such an array will give a narrow soundstage.