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The reproduction of sound may be enhanced by the addition of artificial reverberation when the reproduced sound is below the optimum value of reverberation. Reverberation consists of multiple reflections in which each pencil of sound suffers a decrease in intensity with each reflection. This may be simulated by passing the reproduced sound through a series of transducers with progressive delay and attenuation. A synthetic reverberator has been developed with a loudspeaker, pipe, and microphone delay unit in combination with a feedback system.

Authors: Olson, Harry F.; Bleazey, John C.
Affiliation: RCA Laboratories, Princeton, New Jersey
JAES Volume 8 Issue 1 pp. 37-41; January 1960
Publication Date: January 1, 1960

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President-Elect-Elect Alex U. Case	Comment posted September 11, 2015 @ 19:18:46 UTC (Comment permalink) Please speak up if you happen to know: 1. Was this ever released as a product? 2. Are there any recordings making use of it? I'd love to hear it. (Respond to this comment)
Scott Dorsey	Comment posted January 8, 2016 @ 18:34:46 UTC (Comment permalink) This looks to me like the early precursor of the Cooper Timecube. —scott (Respond to this comment)
Jesse Klapholz	Comment posted March 30, 2016 @ 16:27:15 UTC (Comment permalink) Greetings! No, this was never made into a commercial product; nor was it ever used in any RCA Studio to the best of my knowledge. The people (John Bleazy, et. al.) actually working on these devices would be under Dr. John Volkmann—unsung hero at RCA from 1929 to 1970. I have the personal archives of Dr. Volkman and have been studying them for some 28 years. I've never come across any mention of this device. RCA Recording Studios relied on good room sound and did not even have reverberation chambers in their studios. I have three of the velocity microphones used in this project. Olson's interest were really in architectural acoustics and enhancements thereto. Dr. Olson was not interested in the recording side of the business. So, unfortunately to the best of my knowledge there were no recordings ever made. (Respond to this comment)
President-Elect Alex U. Case	Comment posted September 5, 2016 @ 14:18:25 UTC (Comment permalink) Thanks.  I always wanted to know its sound qualities, but now I know — I never will. (Respond to this comment)

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