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Defeating Ambient Noise (20 Jul 2004)
In the 1950s, Erector sets were the geekiest toy around. The hardest thing to build with an Erector set was a robot with a real motor. You were super cool if you could build the robot.

Ivan Tashev, Rico Malvar and his team have one-upped the robot. They built a microphone array from an Erector set, added some sophisticated software algorithms, and designed a microphone array that produces clear sound, free of background noise.
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