OXIDE is a tape echo with four playback heads on a moving loop. Where a head sits on the tape sets when its repeat arrives, so the display isn't a picture of the delay, it is the delay. Drag a head along the tape to change its timing, and up or down to change its level.
Two ways to change time.
MOTOR changes the tape speed, so repeats bend in pitch while the motor catches up. HEADS slides the heads instead and keeps the pitch steady.
Two tracks on one tape.
SPREAD lets the left and right tracks wobble and drop out on their own. Pan each head, and cross the repeats over for ping-pong.
Stop the tape.
HOLD it, FREEZE it, or STOP it and hear the motor wind down. REVERSE plays every repeat backwards.
What it's modelled on.
Speed, distance and a motor with weight. A repeat arrives when the tape has carried the sound from the record head to a playback head, at 3¾, 7½, 15 or 30 inches per second. The motor takes time to change speed, the tape wows and flutters, and every trip around the loop loses a little top and bottom.
With ENTROPY. Link it and OXIDE's motor speed, and each track's record level and tone filters, age along with the rest of the session.