Automatic double tracking (ADT) (or alternatively Artificial Double Tracking) was an analogue recording technique designed to enhance the sound of voices or instruments during the recording process. It used tape delay to create a delayed copy of an audio signal which was then combined with the original. The effect was intended to simulate the sound of the natural doubling of voices or instruments achieved by doubletracking. The technique was originally developed in 1966 by engineers at Abbey Road Studios in London at the request of the Beatles.

Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.