Non-Blind Speech Watermarking Method Based on Spread-Spectrum Using Linear Prediction Residue

Reiya NAMIKAWA  Masashi UNOKI  

IEICE TRANSACTIONS on Information and Systems   Vol.E103-D   No.1   pp.63-66
Publication Date: 2020/01/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.2019MUL0003
Type of Manuscript: Special Section LETTER (Special Section on Enriched Multimedia — Application of Multimedia Technology and Its Security —)
speech watermarking,  spectrum spreading,  linear prediction residue,  pseudo-random noise signal,  

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We propose a method of non-blind speech watermarking based on direct spread spectrum (DSS) using a linear prediction scheme to solve sound distortion due to spread spectrum. Results of evaluation simulations revealed that the proposed method had much lower sound-quality distortion than the DSS method while having almost the same bit error ratios (BERs) against various attacks as the DSS method.