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HOW TO – Make a sound level indicator

by max on Friday, August 18th, 2006
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Sound Level Indicator 003

Here’s how to build a pretty neat looking sound meter, I just bought some ear projection that is rated for 30db, so this might be fun to test if they really work with a visual indicator…

via [Make]

Max, “Hmmm, what if I could build a sound level detector and hook it up to my GPRS modem…
This seems very interesting…”

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