A perceptible watermarking algorithm for audio signals

This paper proposes an unconventional method for removable audible watermarking system based on the requirements of a promising application .Given an audio file, the system makes some part of file available for preview and perceptual watermarking on the remaining portion. The watermark is embedded i...

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Bibliographic Details
Published in:Multimedia tools and applications 2014-11, Vol.73 (2), p.691-713
Main Authors: Dutta, Malay Kishore, Gupta, Phalguni, Pathak, Vinay K.
Format: Article
Language:English
Subjects:
Algorithms
Analysis
Audio data
Audio signals
Computer Communication Networks
Computer Science
Copy protection
Data Structures and Information Theory
Digital rights management
Digital watermarks
Embedded systems
Engineering
Human
Multimedia
Multimedia computer applications
Multimedia Information Systems
Robustness
Signal processing
Sound
Special Purpose and Application-Based Systems
Spread spectrum
Studies
Watermarking
Wavelet transforms
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Summary:This paper proposes an unconventional method for removable audible watermarking system based on the requirements of a promising application .Given an audio file, the system makes some part of file available for preview and perceptual watermarking on the remaining portion. The watermark is embedded into selected DCT coefficients of host audio signal so that the signal to noise ratio is maintained at a level which is audibly annoying to human auditory system. An issue that arises here is generating huge number of copies of the audio file which are audibly similar and numerically different. Once the audio file is decoded using the secret key a new watermark is embedded in the audio that is perceptually transparent to the human auditory system. Hence this double watermarking i.e. imperceptible and perceptible watermarking provides a novel prototype for digital right management control. The subjective quality tests and robustness tests indicate that the audio quality is excellent and is robust to signal processing attacks.
ISSN:1380-7501
1573-7721
DOI:10.1007/s11042-011-0945-4