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Convention Paper

Temporal Synchronization for Audio Watermarking Using Reference Patterns in the Time-Frequency Domain

Authors: Bliem, Tobias; Borsum, Juliane; Del Galdo, Giovanni; Krägeloh, Stefan

AES Convention 135 · Paper 8975 · October 2013

Abstract

Temporal synchronization is an important part of any audio watermarking system that involves an analog audio signal transmission. We propose a synchronization method based on the insertion of two-dimensional reference patterns in the time-frequency domain. The synchronization patterns consist of a combination of orthogonal sequences and are continuously embedded along with the transmitted data, so that the information capacity of the watermark is not affected. We investigate the relation between synchronization robustness and payload robustness and show that the length of the synchronization pattern can be used to tune a trade-off between synchronization robustness and the probability of false positive watermark decodings. Interpreting the two-dimensional binary patterns as one-dimensional N-ary sequences, we derive a bond for the autocorrelation properties of these sequences to facilitate an exhaustive search for good patterns.

Details

Published in
AES Convention 135
AES Convention
135
Paper number
8975
Publication date
October 6, 2013
Session subject
Signal Processing
Affiliation
Fraunhofer Institute for Integrated Circuits IIS, Erlangen, Germany (See document for exact affiliation information.)
Type
Convention Paper