Visualizing sound waves with a Schlieren apparatus

Here's a simple tool to design your Schlieren apparatus such that you can see sound waves with your camera

This is a simple code that follows Prof. Gary Settles' book; Schlieren and Shadowgraph techniques. Nomenclature is also following his book, for the most part. More details on my website: https://zigunov.com/?p=2199

Hope this enables you to see your own sound waves!