Click the canvas below to start the music…

This was an exercise in learning Coffeescript. Since then it has been converted to straight Javascript, looking at the code you would probably notice some strange concepts which are the product of compiling Coffeescript to Javascript.

Song by Tsabeat.

It uses a Fast Fourier Transform (FFT) to do the frequency analysis, I believe this was ported from ruby code by Corban Brook.

Coffeescript source code github.com/raurir/audiovisualiser

Originally posted on codepen