%0 Journal Article
%T Audio watermarking robust against D/A and A/D conversions
%A Xiang Shijun
%J EURASIP Journal on Advances in Signal Processing
%D 2011
%I Springer
%X Digital audio watermarking robust against digital-to-analog (D/A) and analog-to-digital (A/D) conversions is an important issue. In a number of watermark application scenarios, D/A and A/D conversions are involved. In this article, we first investigate the degradation due to DA/AD conversions via sound cards, which can be decomposed into volume change, additional noise, and time-scale modification (TSM). Then, we propose a solution for DA/AD conversions by considering the effect of the volume change, additional noise and TSM. For the volume change, we introduce relation-based watermarking method by modifying groups of the energy relation of three adjacent DWT coefficient sections. For the additional noise, we pick up the lowest-frequency coefficients for watermarking. For the TSM, the synchronization technique (with synchronization codes and an interpolation processing operation) is exploited. Simulation tests show the proposed audio watermarking algorithm provides a satisfactory performance to DA/AD conversions and those common audio processing manipulations.
%K Audio watermarking
%K D/A and A/D conversions
%K Synchronization
%K Magnitude distortion
%K Time scaling
%K Wavelet transform
%U http://asp.eurasipjournals.com/content/2011/1/3