I remember once being invited to a manufacturer's demonstration of a digital microphone in Nashville. I had been truly looking forward to it–the notion that one of the last two pieces of the pro audio puzzle that had evaded digitization was about to be brought into the fold was exciting.
When I arrived, the microphone was set up on a stand for the throngs to marvel at. But cynic that I am, I began to sense that the Emperor's New Clothes might be hanging on this rack as well. Chatting up the sales rep, I kept asking how the "digital microphone" worked, and kept getting elusive answers. However, each question brought us closer to the core of the matter, which was that this was a perfectly normal powered transducer that, like all microphones, turned the energy of moving air into a variable pulse palpated by the diaphragm and turned that into (very analog) electrical impulses. The digital part had to do with an A/D converter that was mounted in the rear of the microphone casing. This was a digital microphone in the same way I'm a pilot because I sit in the first row behind the cockpit on an MD-80.
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