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Bluecoin microphone distances

Question asked by Marcel . on Jan 24, 2018



I have 2 questions about the microphone distance of the Bluecoin hardware.

I have ordered this hardware to experiment with the microphones and the beam-forming algorithms and it works very impressive. I would like to alter some of the code but had some questions about this.


According to UM2214 "Getting started with AcousticBF ..." the microphone distance need to be 21 mm? But the Bluecoin microphones are 40 and 57 mm (diagonal) apart, does this influence the beam-forming algorithm and what determines the distance to choose?


I would like to pick-up speech further away from the Bluecoin using a beam-form what setting should I adjust to accomplish this?