This looks interesting.
"Where is that sound coming from? Signal Interface’s acoustic imager will show you"
"... The imaging system, developed in cooperation with Bellevue-based OptiNav, combines several tricks of the acoustic trade. It starts with a square metal plate, about 2 feet wide, which is dotted with an array of 40 tiny digital microphones."
Aha, so that's the secret, it uses DIGITAL microphones.
Acoustic imager reveals where noise is coming from
"Where is that sound coming from? Signal Interface’s acoustic imager will show you"
"... The imaging system, developed in cooperation with Bellevue-based OptiNav, combines several tricks of the acoustic trade. It starts with a square metal plate, about 2 feet wide, which is dotted with an array of 40 tiny digital microphones."
Aha, so that's the secret, it uses DIGITAL microphones.
Acoustic imager reveals where noise is coming from
Using digital mics could be a real enabler here.... if they have daisy-chainable serial interfaces, that would make connecting an array hugely easier than making mixers and separate gain controls for 40 separate analog signals. You'd instead just have a big digital stream to read in and operate on with DSP.
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