February is over, and that means RPM 2013 is, too. I only managed three tracks, but at least I did spend some good time thinking about sound.

My tracks are here.

This is track #2 for my RPM 2013 Challenge sound pieces.

It comes with a video, created at the same time.

Headphones are recommended.

Ten balls move linearly at various constant speeds, bouncing off the sides. Every triangle formed by these balls is drawn, the color determined by how equilateral the triangle is (redder = more equilateral). A sound event is generated for each triangle, twice per frame, determined by the size, location and equilaterality (?) of the triangle.

Made with Csound (audio) and processing (video).

You can see it bigger if you click through to Vimeo.

triangular composition from Matthew Conroy on Vimeo.

RPM 2012 ended pretty well for me. I got 35 minutes of sound made, anyway, and tried out a number of new techniques and ideas. It's all available on my audio page.