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Acid Machine DIY Synth Hypnotizes Two Ways

Using the same principle as the LED strobes that enable fine-tuning of turntable rotation speeds, this DIY "Acid Machine" synth has a cool way of visualizing its sound: A rotating disc printed with a special pattern isolates a thin radial disc depending on the frequency of a strobing LED that corresponds to the note… » 10/15/08 10:45am 10/15/08 10:45am