BBD sound effects unit (1):

Phasing, vibrato and reverberation are commonly used sound effects in modern music. The effects unit described here is a high-end piece of audio equipment that will make many musicians and sound engineers sit up. Based on a state-of-the-art bucket-brigade delay (BBD) chip, the unit is capable of many popular sound effects, including ADT, chorus, phasing and real-to-life reverberation.