There was a pretty popular video showing this exact concept (hiding shapes/text in high frequency noise ) about a year ago, for those interested: https://www.y

There was a pretty popular video showing this exact concept (hiding shapes/text in high frequency noise ) about a year ago, for those interested: https://www.youtube.com/watch?v=Bg3RAI8uyVw https://www.youtube.com/watch?v=Bg3RAI8uyVw