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1. Don Romano (alt) (thor@noagendasocial.com)'s status on Tuesday, 16-Apr-2019 17:51:55 EDT Don Romano (alt)

   @awg With MEMS microphones, they talk a lot about beamforming using arrays.

   1. Don Romano (alt) (thor@noagendasocial.com)'s status on Tuesday, 16-Apr-2019 18:03:29 EDT Don Romano (alt)

      in reply to

      @awg I'm trying to work out what would be a good 3D arrangement of MEMS microphones to accomplish all the common polar patterns.

      I think a figure-eight pattern would result by simply having two mics spaced apart, inverting one microphone and summing the result?

      A cardoid pattern is just an omni plus a figure-eight, so I guess you'd just add a third omni microphone in the middle to get that.

      I think this would also let you do nice M-S matrix stereo recordings.

      1. Don Romano (alt) (thor@noagendasocial.com)'s status on Tuesday, 16-Apr-2019 18:12:09 EDT Don Romano (alt)

         in reply to

         @awg Now if you extend this and make an X-shaped array with 5 mics, that would also double as an X-Y pair. The center mic is still omnidirectional but now it does double duty as the omni element that turns the figure-eights crossing it into cardoids.

         1. Don Romano (alt) (thor@noagendasocial.com)'s status on Tuesday, 16-Apr-2019 18:12:49 EDT Don Romano (alt)

            in reply to

            @awg Does this sound right?