The object of the system is to simulate by electro-acoustic means the large number of reflections from the wall, ceiling and floor which normally make up the natural indirect sound and provide a smooth and uniform decay. The main EMI studio in London has under normal conditions a reverberation time of 1:8 sec at 1 kHz which can be raised by the system to 4 sec. with safety, even with acoustic loading.

Author: Dutton, Gilbert F.
Affiliation: Electric and Musical Industries Ltd., Hayes, Middlesex, England
AES Convention: 31 (October 1966) Paper Number: 485
Publication Date: October 1, 1966

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