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The LEDE- Concept for the Control of Acoustic and Psychoacoustic Parameters in Recording Control Rooms

An approach to the standardized control room is found in the "live end-dead end" (LEDE-) approach. Desirable features include control of the initial time delay, psychoacoustic removal of the directional clues belonging to the control room, and control of the early reflected sound field's density, spacing in time, and acoustic level. This results in an exceptionally neutral acoustic environment and allows development of a sound field at a mixer's ears which correlates remarkably with the sound field appearing at the microphones in the studio, thereby allowing precision judgments to be made at the mixing console.

JAES Volume 28 Issue 9 pp. 585-595; September 1980
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AES - Audio Engineering Society