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Convention Paper

The Elimination of Scratch Noise from 78 R.P.M. Records

Authors: Craven, Peter G.; Gerzon, Michael A.

AES Convention 50 · Paper L-37 · March 1975

Abstract

"Scratch" noise, i.e. impulsive noise due to the abrasive filler added to shellac, is the main source of noise on many electrical 78 r.p.m. records. Typically, one finds that there are around 100 such impulses per second. We describe a method of suppressing much of this noise that basically involves two steps: detecting the presence of an impulse, and suppressing the audio output during such an impulse.

Details

Published in
AES Convention 50
AES Convention
50
Paper number
L-37
Publication date
March 6, 1975
Affiliation
Department of Astrophysics and Mathematical Institute, University of 0xford, Oxford, England (See document for exact affiliation information.)
Type
Convention Paper