"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.

Authors: Craven, Peter G.; Gerzon, Michael A.
Affiliation: Department of Astrophysics and Mathematical Institute, University of 0xford, Oxford, England
AES Convention: 50 (March 1975) Paper Number: L-37
Publication Date: March 1, 1975 Import into BibTeX
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=2449

Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $33 for non-members and is free for AES members and E-Library subscribers.

Learn more about the AES E-Library

E-Library Location: (CD aes8)   /pp6975/pp7503/8087l37.pdf

Start a discussion about this paper!