u/yomommasbox357

In the song Sonia exactly 3:00 minutes in there is this guitar effect that's like a phaser or flanger on the open not that creates almost like a sweep but its not stereo obviously they also do it on the song Loyola at 2:38 seconds in and on the song hestehov 40 seconds in what is that effect and what can I buy to do that like on command or something