A Multiple Watermarking Scheme for Digital Audio Signals

Abstract

Watermarking is a method for the verification of the authenticity of a digital object. In this work we investigate the watermarking of audio signals utilizing watermarked images. We present a multiple watermarking scheme for the watermarking of digital audio signals. The proposed technique exploits an image as a watermark which has been already watermarked with a self inverting permutation. The watermarked image, is then embedded in the LSB values of the digital audio signal. By conducting a series of evaluation experiments, including an attack vector consisting of cropping, noise, and re-sampling attacks, we investigate the robustness of the proposed multiple watermarking technique and prove its potentials against various factors affecting each type of attack.