A Novel Audio Watermarking Algorithm for

Copyright Protection of Digital Audio

Abstract

Digital watermark technology is now drawing attention

as a new method of protecting digital content from unauthorized

copying. This paper presents a novel audio watermarking

algorithm to protect against unauthorized copying

of digital audio. The proposed watermarking scheme includes

a psychoacoustic model of MPEG audio coding to

ensure that the watermarking does not affect the quality of

the original sound. After embedding the watermark, our

scheme extracts copyright information without access to the

original signal by using a whitening procedure for linear

prediction filtering before correlation. Experimental results

show that our watermarking scheme is robust against

common signal processing attacks and it introduces no audible

distortion after watermark insertion.