Causes and remedies of instability of public address systems are reviewed. The prevention of acoustic feedback in reverberant rooms by means of frequency shifting is described.

Author: Schroeder, Manfred R.
Affiliation: Bell Telephone Laboratories, Incorporated, Murray Hill, NJ
JAES Volume 10 Issue 2 pp. 108-109; April 1962
Publication Date: April 1, 1962

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