modulated delay

A modulated delay is a delay effect whose repeats are altered by modulation, producing movement such as chorus, warble, or wobble in the echoed signal¹. Sources use the term to describe pedals ranging from subtle shading on the repeats to full-on rich modulated delay², with controls that set how much chorus or warble is present in the delay¹. The effect appears in pedals described as dark and dreamy³, warm and lush analog-style⁴, or chaotic⁵, and can stack well with fuzz⁶. The term also describes the wavy sound produced by older tapes in the Roland Space Echo RE-201⁷.