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Old 08-14-2018, 02:47 PM   #4
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Join Date: Apr 2009
Location: UK
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Originally Posted by cyrano View Post
My simple-minds memory aid:

- First order: 4 mics (2D)
this is incorrect. As readave says, 1st order ambisonics that can be captured with a tetrahedral mic like the soundfield can capture the 360 degree (3D) soundfield. Confusingly you can do ambisonics with only horizontal info, by omitting certain spherical harmonics. For example the Zoom H2n, can record horizontal only FOA.

Peter stitt's blog provides a nice introduction IIRC: doesn't seem to be working right now
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