ITCC '00 Proceedings of the The International Conference on Information Technology: Coding and Computing (ITCC'00)
Multimedia Security Technologies for Digital Rights Management
Multimedia Security Technologies for Digital Rights Management
Perceptual cryptography on MPEG Layer III bit-streams
IEEE Transactions on Consumer Electronics
Quantization Step Parity-based Steganography for MP3 Audio
Fundamenta Informaticae
Huffman table swapping-based steganograpy for MP3 audio
Multimedia Tools and Applications
Audio watermarking based on quantization index modulation using combined perceptual masking
Multimedia Tools and Applications
Quantization Step Parity-based Steganography for MP3 Audio
Fundamenta Informaticae
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This paper proposes a novel MP3 watermarking method which is applicable to a mobile terminal with limited computational resources. Considering that in most cases the embedded information is copyright information or metadata, which should be extracted before playing back audio contents, the watermark detection process should be executed at high speed. However, when conventional methods are used with a mobile terminal, it takes a considerable amount of time to detect a digital watermark. This paper focuses on scalefactor manipulation to enable high speed watermark embedding/detection for MP3 audio and also proposes the manipulation method which minimizes audio quality degradation adaptively. Evaluation tests showed that the proposed method is capable of embedding 3 bits/frame information without degrading audio quality and detecting it at very high speed. Finally, this paper describes application examples for authentication with a digital signature.