Multimedia Digital Watermarking Techniques﹙II﹚
Date Issued
2001-07-31
Date
2001-07-31
Author(s)
DOI
892213E002160
Abstract
A robust audio watermarking technique using spread
spectrum approach is proposed in this paper. The
watermark is scrambled by a spread spectrum sequence
before it is inserted into the host audio. In the extraction
process, the watermark must be restored by the same
sequence. The spread spectrum approach can increase
both the efficiency and security of the watermarking
method. Two kinds of sequences, perfect sequences and
uniformly redundant arrays (URA’s), are tested. This
technique proves to be robust against MP3 attack in
most cases except when speech clips are used together
with perfect sequences.
Subjects
Watermarking
Spread spectrum
Publisher
臺北市：國立臺灣大學電機工程學系暨研究所
Type
report
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