The psychoacoustic that I have tried in the piece is the panning and time difference. For the panning part, I used auto panning in Ableton and automate the rate of it. I slowly increase the rate as the forward & backward process speed up. It emphasises the swirling effect and created a bigger senses of space when put all the recording together.
For the time difference, instead of decompose one voice into more voices like Steve Reich ‘s Come out, I put the forward sound on one sounds and the reverse on another side, and both have the same rate of panning. As a result, one ears is listen forward and another is the reverse and both keep spinning around. As more close toward the ending, the panning and forward& backward effects are more intense which for me, have the increase the heart beat and create an anxiety like effects. Time is the main theme of my composition, and hopefully the audiences can get lost in time.