I typically listen to these after taking my morning LSD, and do get some psychoactive effects. Strangely the effects are completely different if I take amphetamines or light up the afternoon crack pipe before listening.

Seriously tho, I just started to listen to this for the first time ever, and it does work as a pretty effective and non-intrusive noise blocker. Easy to ignore.

Edit: never mind the second point, the surroundings just got quieter at the same time I started to listen.