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Audio Forensic Marking using Psychoacoustic Model II and MDCT  

Rhee, Kang-Hyeon (Dept. of Electronics Eng., Chosun University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea CI / v.49, no.4, 2012 , pp. 16-22 More about this Journal
Abstract
In this paper, the forensic marking algorithm is proposed using psychoacoustic model II and MDCT for high-quality audio. The proposed forensic marking method, that inserts the user fingerprinting code of the audio content into the selected sub-band, in which audio signal energy is lower than the spectrum masking level. In the range of the one frame which has 2,048 samples for FFT of original audio signal, the audio forensic marking is processed in 3 sub-bands. According to the average attack of the fingerprinting codes, one frame's SNR is measured on 100% trace ratio of the collusion codes. When the lower strength 0.1 of the inserted fingerprinting code, SNR is 38.44dB. And in case, the added strength 0.5 of white gaussian noise, SNR is 19.09dB. As a result, it confirms that the proposed audio forensic marking algorithm is maintained the marking robustness of the fingerprinting code and the audio high-quality.
Keywords
Audio forensic marking; Multimedia fingerprinting code; Psychoacoustic model II; MDCT(Modified Discrete Cosine Transform); DRM(Digital Rights Management) free;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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