Shimmer

Shimmer is a type of reverb effect that adds a pitch shift to the reverb tail, creating a shimmering or ethereal sound. The effect can be achieved by using a pitch shift algorithm in combination with a reverb algorithm. The effect is often used to create a sense of space and depth, but with a more pronounced sense of movement and complexity than a traditional reverb.

Shimmer reverb is a popular effect in ambient, post-rock and shoegaze music, where it is often used to create a sense of depth and movement in the sound.