GuruBlog

I have been asked to share the code of the sound visualizer I wrote in processing about a year ago, so I decided to write a blogpost explaining what I did

The program has two main parts - the autocorrelation function that creates the wiggly line and a glsl filter for the lens-distortion effect.

I made a visualizer for my track Walk in the rain using processing. I used a stereo autocorrelation function to generate the line drawing using the minim framework and added a glsl shader to create the lens distortion effect.

I made a short processing script that draws sine curves and uses a glsl blur filter to add a neon effect

To create this effect you need a processing sketch drawing the curves and a glsl filter that adds the blur effect.