You might remember the Hard Drive Oscilloscope project that was made about 3 and a half years ago (wow how time flies). Over the years there have been lots of people who have been inspired by it and built a project similar to it. Here is one, here is another, and one more for good measure. I was amazed to see that there was actually about 30 of them built! This Dual Hard Drive Laser Drawing Machine works in a similar way but actually uses 2 hard drives to provide more control of the laser beam.
“Lux Vocis works like so: a user speaks into a microphone and my puredata patch picks out the most commonly recurring spectral peaks of the voice. These frequencies are then used as seeds for a Lissajous figure, which is then drawn on the surface by oscillating the two mirrors attached to the hard drive voice coils.”
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