This is a pink noise binaural that goes from 16hz (beta) to 7.5 (theta) gradually stepping down within 5 mins. The end, it takes you from 7.5 to 16hz in just a few minutes. It is a spatially generated file, instead of two tone and it sounds like static/rain. This is my first uploaded file, so I would love some feed back. I will upload more varieties if this one is found useful.