Audio watermarking scheme robust against desynchronization attacks based on kernel clustering

Authors:
Hong Peng;Jun Wang;Zulin Zhang
Affiliations:
School of Mathematics and Computer Engineering, Xihua University, Chengdu, China 610039;School of Electrical and Information Engineering, Xihua University, Chengdu, China 610039;Department of Computer Science, Sichuan University for Nationalities, Kangding, China 626001
Venue:
Multimedia Tools and Applications
Year:
2013

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Abstract

In this paper, we propose an adaptive audio watermarking scheme based on kernel fuzzy c-means (KFCM) clustering algorithm, which possesses robust ability against common signal processing and desynchronization attacks. The original audio signal is partitioned into audio frames and then each audio frame is further divided as two sub-frames. In order to resist desynchronization attacks, we embed a synchronization code into first sub-frame of each audio frame by using a mean quantization technique in temporal domain. Moreover, watermark signal is hid into DWT coefficients of second sub-frame of each audio frame by using an energy quantization technique. A local audio feature data set extracted from all audio frames is used to train a KFCM. The well-trained KFCM is used to adaptively control quantization steps in above two quantization techniques. The experimental results show the proposed scheme is robust to common signal processing (such as MP3 lossy compression, noise addition, filtering, re-sampling, re-quantizing) and desynchronization attacks (random cropping, pitch shifting, amplitude variation, time-scale modification, jittering).