Content based localized robust audio watermarking

Abstract

Synchronization attacks like random cropping and time scale modification are crucial to audio watermarking. To combat theses attacks, a novel localized robust audio watermarking method is proposed in this paper. The basic idea is to embed watermark in selected steady high energy local regions, which usually correspond to music edge and will not be changed much by audio signal processing and synchronization attacks in order to maintain high auditory quality. In this way, the embedded watermark is expected to escape the damages caused by audio signal processing, random cropping and time scale modification etc. Experimental results show that the proposed scheme is rather robust against common audio signal processing, time domain synchronization attacks, and most distortions introduced in Stirmark for audio. © Springer-Verlag Berlin Heidelberg 2003.