IIRC, that technology originated in fighter jets, and worked it's way down to consumer goods. The company sold Bluetooth headsets for a while, but multi-mic sol

IIRC, that technology originated in fighter jets, and worked it's way down to consumer goods. The company sold Bluetooth headsets for a while, but multi-mic solutions were cheaper and worked better. They tried to hang in there for a few years, diversifying into consumer electronics like the "Jawbox." It didn't work out, and they went bankrupt.