04-04-2012, 12:58 PM
ABSTRACT
This paper presents a methodology for increasing audio watermark robustness. The method
exploits the multidimensional nature of a stereo audio file, which provides two channels to hide data.
By incorporating redundant information along both channels, the total number of errors due to attacks
should be less than or equal to that produced by any one method alone.
1. INTRODUCTION
Audio watermarking involves embedding data as additional information into an audio file. The
most common application is for copyright protection to resolve piracy disputes, although some have
doubts about the feasibility of this applications [1]. A watermark should not be detectable by statistical
means [2]. In addition, knowing the watermarking scheme should not help a user extract the hidden
data [3]. Any process that may damage a watermark is called an “attack.” The goal of most
watermarking schemes is to be resistant to as many types of attacks as possible and to “reliably” hide
information. That is, it should be able to consistently extract the hidden message. This goal of this
paper is to present a technique that helps minimize the number of errors caused by various attacks.
This paper presents a methodology for increasing audio watermark robustness. The method
exploits the multidimensional nature of a stereo audio file, which provides two channels to hide data.
By incorporating redundant information along both channels, the total number of errors due to attacks
should be less than or equal to that produced by any one method alone.
1. INTRODUCTION
Audio watermarking involves embedding data as additional information into an audio file. The
most common application is for copyright protection to resolve piracy disputes, although some have
doubts about the feasibility of this applications [1]. A watermark should not be detectable by statistical
means [2]. In addition, knowing the watermarking scheme should not help a user extract the hidden
data [3]. Any process that may damage a watermark is called an “attack.” The goal of most
watermarking schemes is to be resistant to as many types of attacks as possible and to “reliably” hide
information. That is, it should be able to consistently extract the hidden message. This goal of this
paper is to present a technique that helps minimize the number of errors caused by various attacks.