Electronic devices are widely used to introduce in sound signals an artificial reverberation subjectively similar to that caused by multiple reflections in a room. Attention is focused on those devices employing delay loops. Usually, these devices have a comb-like frequency response which adds an undesired -color- to the sound quality. Also, for a given reverberation time, the density of echos is far below that encountered in a room, giving rise to a noticeable flutter effect in transient sounds. A class of all-pass filters is described which may be employed in cascade to obtain -colorless- reverberation with high echo density.
Authors:
Schroeder, Manfred R.; Logan, Benjamin F.
Affiliation:
Bell Telephone Laboratories, Incorporated, Murray Hill, NJ
JAES Volume 9 Issue 3 pp. 192-197; July 1961
Publication Date:
July 1, 1961
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