Increasing robustness of patchwork audio watermarking algorithm using attack characterization

Abstract

We present a novel' audio wafermarking scheme that has sign;/;cant!v higher detection robustness cumpared !u the standard patchwwk w,aterrnarking algorithm. The improvement in watermark detectiun rohustne.vs i.s ohtained using characterization of the low pass filtering and re.sampling otrackr. Perceptual tran.sparenc,v of the algoritl7m. which inserr the watermark into uavele! co+fficients of the hu.st aildio. is controlled using frequency masking pruperp of the HAS, Te.sls confirmed improvement of up tu 2 ordem U / magnitude in watermark detection hi! error rate'. Index Terms Audio watermarking, attack characterization, digital rights management.