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Convention Paper

Drift, Wow and Flutter Measurement and Reduction in Shrunken Movie Soundtracks

Authors: Czyzewski, Andrzej; Kupryjanow, Adam; Maziewski, Przemyslaw

AES Convention 124 · Paper 7392 · May 2008

Abstract

The paper presents the method and algorithms used to determine and reduce drift, wow and flutter in shrunken movie tapes. The idea behind the algorithms is to use image processing for calculating the local tape shrinkage which is one of the reasons for drift, wow and flutter. The shrinkage can be calculated via analyzing the image height of: a movie frame, sprocket hole, pitch or another standardized movie tape element; and then it can be expressed as the drift, wow and flutter characteristic. After the characteristic determination both the soundtrack and movie frames can be corrected. The paper presents the description of the image based drift, wow and flutter determination method and the experiments confirming the theoretical findings.

Details

Published in
AES Convention 124
AES Convention
124
Paper number
7392
Publication date
May 6, 2008
Session subject
Audio Archiving, Storage, Restoration, and Content Management; Audio Networking
Affiliation
Gdansk University of Technology (See document for exact affiliation information.)
Type
Convention Paper