Yep. It makes several copies of the original text-to-speech file, with background noise of different frequencies. Basically, it plays the intended file (of a c

Yep. It makes several copies of the original text-to-speech file, with background noise of different frequencies. Basically, it plays the intended file (of a certain word and a particular frequency) to get your brain in sync to encode the information effectively and efficiently to your memory. Hence, it is closed-loop. But, it is a huge pain to compile the repo and to get working (you can use the USB version with the Ubuntu image but it can be finicky). I probably spent 80 hours trying to get it to compile and probably reinstalled Ubuntu 30+ times to get working. Eventually I was successful. I now have a backup of the Ubuntu image thanks to Acronis True Image and I also use an NAS server. If you email me (check my profile) I can help you with getting this all set up. I would get it to compile first before purchasing OpenBCI equipment.