Visualizing Electronic Music with Oscilloscopes

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(Hoo Boy, this place is due for some new material!)

I’ve gotten really interested in “oscilloscope music,” which is sound generated expressly for the purpose of drawing on oscillosocpes. A fellow named Jerobeam Fenderson got me started down that road. One of the ways people are making “OM,” is with a program called Pure Data, which is a graphical interface for interconnecting pieces just like a modular synthesizer, except it’s more like building a city with individual molecules.
It’s a fact of trigonometry, that if you plot a sine wave on the y-axis of an X/Y oscilloscope, and a cosine wave on the x-axis, you will get a perfect circle.

Interesting things happen when you mix these pairs with ones of different frequencies.

I went “scope crazy.”

And then I revised the patch a little bit and made some more:

I now have this running on a Raspberry Pi, so we’ll see where this goes.

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