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DIY Microprocessor Sound Level Meter Demoed At MIT

Posted by timothy on from the you-only-listen-to-me-to-check-levels dept.

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!"

5 of 81 comments (clear)

  1. from MIT? by Anonymous Coward · · Score: 5, Insightful

    ok so pretty cool, but can someone explain how hooking a mic up to an ADC is worthy of a mention for MIT? It sounds more like a high school project at face value, what am I missing?

    1. Re:from MIT? by scoot80 · · Score: 3, Insightful

      Its MIT - even the most mundane things sound exciting to the rest of the world. Just throw in a few more catch phrases - SPI interface, sigma delta ADC, and its already really really exciting!

    2. Re:from MIT? by Xeth · · Score: 4, Insightful

      An MIT student is using Slashdot's affinity for the Institute to get free advertising (as he did in the previous story). That's all that's going on here.

      --
      If your theory is different from practice, then your theory is wrong.
  2. Oh wait... Advertisements. by Anonymous Coward · · Score: 5, Insightful

    It IS a high school project at face value. The kit can be yours for only $80!

    Shouldn't ads like this be paid for?

  3. Advertisement? by drolli · · Score: 4, Insightful

    Sound level meter? Did i miss something particularly difficult or innovative about this thing?

    Whats the point? Selling MC Kits?