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DIY Microprocessor Sound Level Meter Demoed at MIT

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An anonymous reader writes "A Piezoelectric Sound Level Meter was demoed at MIT's Battle of the Bands last month, borrowing its display from the do-it-yourself USB LED Marquee that was the subject of a previous Slashdot story. This video tutorial describes in detail both the analog electronics plus the C code that runs the system. If this is your first experience at the intersection of digital and analog systems, don't be scared!"
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DIY Microprocessor Sound Level Meter Demoed at MIT

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One is not superior merely because one sees the world as odious. -- Chateaubriand (1768-1848)