Automatic Double Tracking
Automatic double-tracking or artificial double-tracking (ADT) is 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 double tracking. The technique was originally developed in 1966 by engineers at Abbey Road Studios in London at the request of The Beatles.
Read more about Automatic Double Tracking: Overview, Ken Townsend, The Double Tracking Effect, Tape Delay System, Use By The Beatles, Flanging, ADT Versus Manual Double Tracking, Other Users of ADT, Psychedelic Music, Doubling Echo, Arrival of Digital Technology
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