Yes you can acces the array separately. I'm not sure about each mic in the array though. There may be a way with win32 api's and WMF. It is just a mic device in Device Mgr. You can use win 32 api's, Windows Media Foundation (WMF), or old versions of DirectX,
however getting the audio beam and direction and other cool features is calculated in the K4W v2 SDK. Otherwise you'd have to figure all those cool features out yourself.
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