I read an interesting article today about MEMS microphones, their small size and low current draw, and a host of other advantages over other microphone technologies.
The article was published on Hackster.io, an interesting site that showcases various manufacturers items.
Today’s article was about a MEMS stereo microphone board that plugs in via USB, and I thought it might be interesting.
You can read about it here:
They didn’t give a sensitivity fig. I’m actually trying a new mic (well it’s on my to do list anyway).
Carl has some accuracy challenges sitting on the floor recognizing words in grammar from a standing human speaking in normal home conversation levels.
I saw a far field array mic with 6 or 8 of these MEMS mics, but it doesn’t integrate well with Carl’s layout.
I was thinking that you could make a small hole on each side of Carl’s head.
I didn’t see a price either, though it looked interesting.
Perhaps there’s a different mic you could use?
P.S.
Micro Center has Google kits in a little box to make things like voice-recognition with a Pi. They contain an audio hat, a speaker, and a stereo i2c mic. board.
And the whole enchilada for less than a cheapo Pi. ($14 last I checked, less on sale, and I believe you can order them online.)
The audio board supports stereo if you cut a jumper and add an inexpensive second channel audio board that solders onto preexisting header pads. If you don’t want/need stereo, you’re golden.
Note that I think it uses i2c for sound. Since I don’t remember the i2c address, I don’t know if there are any conflicts.
May 2017 - Lesson learned: “Google __fill_blank__ API” changes continually.
