Binaural beats
 

has anyone experimented with it? do you use pre recorded or tone generators?

good morning Harmon... lol

Harmon is always on time,

I use an old cd-rip from a disk that came with book.

There are plenty on youtube aswell

Pre-recorded. Mostly while sleeping, from Spotify.

I think it does have certain effect, but it's hard to generalize.

helps me sleep at times, they got a lot of good ones on youtube

pre-recorded
takes about 7 minutes to kick in the altered brain wave pattern acc to "science"
but less if you're really attuned to them